Board of Trustees of the Greek Orthodontic Society
President: P. Skoularikis
Vice-President: P. Karvelas
Secretary-General: A. Melkos
Treasurer: P. Panos
Trustees: I. Gerogianni
M. Palios
C. Gioka
P. Ηatzopoulos
A. Papadogeorgaki-Anagnostou

Board of Trustees of the Orthodontic Society of Northern Greece
President: I. Ioannidou-Marathiotou
Vice-President: A.A. Zafeiriadis
Secretary-General: A. Chatzigianni
Treasurer: E. Koumpia
Trustees: F. Tarawneh
I. Zogakis
K. Tsolakis

Board of Trustees of the Hellenic Professional Union of Orthodontists
President: A. Karamouzos
Vice-President: P. Ηatzopoulos
Secretary-General: A. Papadogeorgaki-Anagnostou
Treasurer: N. Radou
Trustees: K. Paradeisis
M. Palios
M. Exarchou

Organizing Committee
I. Ioannidou-Marathiotou
A.A. Zafeiriadis
A. Chatzigianni
E. Koumpia
F. Tarawneh
I. Zogakis
K. Tsolakis
Coordinators
A. Chatzigianni
M. Makrygiannakis

Dear Colleagues,
We are delighted to invite you to the 22nd Greek National Congress organized by the Greek Orthodontic Society and the Orthodontic Society of Northern Greece, with the participation of the Hellenic Professional Union of Orthodontists, which will take place on 7-8 December, 2019, at “Makedonia Palace” Hotel in Thessaloniki, Greece.
In an effort to meet our high expectations for modern knowledge in orthodontic science, the organizing committee and the coordinators of the Congress have prepared a rich scientific program with many interesting lectures, round tables, oral and poster presentations offered by Greek and foreign distinguished speakers with extensive research and clinical experience.
The scientific program also includes a Pre-Congress course with a prominent foreign speaker to convey knowledge, receive questions and resolve queries.
Finally, the established Round Table of the Hellenic Professional Union of Orthodontists will give us answers to current professional issues and troubles of our specialty.
Due to the participation of many foreign speakers and in order to facilitate mutual understanding among colleagues, there will be simultaneous translation between English and Greek language during the two days of the main congress.
At the same time, a commercial exhibition will be held during the conference, where exhibitors will present us with technological innovations and modern imaging systems.
Note also, that the 22nd National Congress participants will be awarded with credit points based on the Continuous Professional Dentist Training system of the Hellenic Dental Association.
The coordinators and the organizing committee feel that this year's Congress with the plethora of international participation will significantly upgrade and contribute substantially to the information and training of the colleagues who will attend it.
We look forward to welcoming you all in beautiful Thessaloniki.
Sincerely,
Dr. Panagiotis Skoularikis
President of the G.O.S.
Prof. Ioulia Ioannidou-Marathiotou
President of the O.S.N.G.
Dr. Andreas Karamouzos
President of the H.P.U.O.

Dr. John Bennett
Orthodontic Treatment Mechanics for the 2020s
There was a time when orthodontists may have considered themselves as mere ‘tooth movers’, aiming only to create a nice smile, but those days have gone. Evidence is available to support a much wider role and more important status for the orthodontist in today’s medical community, because it is now accepted that good orthodontic care can improve the quality of life for patients in many areas.
In this comprehensive one day program Dr. Bennett will show key aspects of the current thinking and the new techniques which are being recommended. He will look in detail at evidence-based treatment methods which will support this wider role for the orthodontist. He will show an overall philosophy to meet the expectations of patients and colleagues as we move into the 2020s and will explain how proven treatment mechanics can be combined with newer concepts to provide state-of-the-art care.
Some of the specific topics will include:
• An update on mechanics - what has changed and what does not change
• Information on arch wire sequencing and bracket technology
• The role of the orthodontist in managing the airway
• Techniques for successfully treating to a Class II molar result
• Managing upper canines using bracket versatility
• Technique tips for better treatment of Class II/2 cases
• How to minimize wire bending and enjoy being an orthodontist
This will be a clinical course given by an acknowledged authority in treatment mechanics. It will be supported by stage-by-stage treated cases of varying levels of complexity, remembering that if we are not making changes we are not making progress. Why not take this chance to spend an enjoyable and clinically relevant day with motivated colleagues on December 6th?

The Pre-Congress Course is sponsored by DENTALCOM - Papazoglou G. S.A. - FORESTADENT

Curriculum Vitae
Dr. Bennett is a well-known figure in the world of orthodontics. He has a special interest in developing effective orthodontic treatment mechanics and has authored or co-authored seven orthodontic textbooks. Working with Dr. Richard McLaughlin and Dr. Hugo Trevisi in the 1990s he developed an overall philosophy of orthodontic treatment which is the method of choice in many university teaching departments around the world. Since then he has continued to work with Dr. McLaughlin to introduce further improvements and refinements in orthodontic treatment mechanics. This latest thinking will be the main focus of his presentations at the Congress in Thessaloniki.

December 6th, 2019 Course Provisional schedule
08.30 – 09.00 Registration
09.00 – 10.30 Presentation
10.30 – 11.00 Break
11.00 – 12.30 Presentation

12.30 – 14.00 – Lunch –

14.00 – 15.30 Presentation
15.30 – 15.50 Break
15.50 – 17.15 Presentation
17.15 – 17.30 Questions, discussion.

Dr. John Bennett
Treatment mechanics after second premolar extractions
This presentation will look at case selection when extraction of second premolars is being considered. It will show an updated approach, taking advantage of sectional mechanics at the start of treatment in preparation for more conventional full-arch mechanics later. A selection of stage-by-stage treated cases will include technique tips and show that this relatively new treatment method has advantages for both the patient and the orthodontist.

Curriculum Vitae
Dr. Bennett is a well-known figure in the world of orthodontics. He has a special interest in developing effective orthodontic treatment mechanics and has authored or co-authored seven orthodontic textbooks. Working with Dr. Richard McLaughlin and Dr. Hugo Trevisi in the 1990s he developed an overall philosophy of orthodontic treatment which is the method of choice in many university teaching departments around the world. Since then he has continued to work with Dr. McLaughlin to introduce further improvements and refinements in orthodontic treatment mechanics. This latest thinking will be the main focus of his presentations at the Congress in Thessaloniki.

The Lecture is sponsored by DENTALCOM - Papazoglou G. S.A. - FORESTADENT

Ahmet Keles
New horizons in treatment of Maxillary constriction with Keles Keyless Expander.
Rapid palatal expansion (RPE) is a common procedure in orthodontic treatment to correct maxillary transverse deficiency, increase the arch length, indirectly widen the mandibular arch in some cases. It has been estimated that posterior crossbite occurs in about 7.1% of the U.S. children in mixed dentition, and it usually does not self-correct as the patient transitions into permanent dentition. The expanders typically contain an activation component involving a jackscrew in the midpalatal region and a separate activation key. With each turn of the jackscrew, two metal or acrylic blocks adjacent to the screw move in opposite directions and exert force through the teeth and palatal structures to separate the midpalatal suture and expand the palate. However, to properly activate the expander, the patients or their parents have to insert the key precisely into the jackscrew hole and turn the screw posteriorly toward the throat. Clinically, this hole-and-key design introduces many difficulties in proper activation. The hole, which is less than one millimeter in diameter, is sometimes difficult for the patients and their parents to locate intraorally. The presence of food debris in the hole exacerbates the challenge. Furthermore, if a turn of the screw were not made completely with the key, the next hole for the subsequent turn would not appear. Other risks include injuries to the palate from the insertion of the key and swallowing of the key. These complications not only decrease patient compliance and delay treatment progress but they can also cause patient dissatisfaction and potential legal actions toward the orthodontists due to appliance safety issues. The disadvantages of the traditional expanders mentioned above are eliminated with the “Keles Keyless Expander” (KKE) appliance. The expander has an attached activation arm to eliminate the need for a separate key. The patients can activate the screw with their own finger. The activation arm then springs back without unwinding of the screw and becomes ready for the next activation. The new design consists of a smaller midpalatal screw with a sturdier built-in activation arm that works as a unidirectional ratchet and includes a locking mechanism to prevent the unwinding of the screw.

Curriculum Vitae
After graduating from Istanbul University Faculty of Dentistry in 1989, Ahmet Keles started the orthodontic residency program at Harvard University in the U.S. with scholarship. In 1994, he completed his doctorate degree, and his thesis study received The Thomas Graber Award of Special Merit given by American Association of Orthodontics. After completing his doctorate, he taught orthodontics at Marmara University. After acquisition of his Associate Professorship in 2002, he served as Clinical Director of Orthodontics at University of Connecticut until 2005. Afterwards, he started teaching at Harvard University as a part time faculty. Currently, he divides his time between Istanbul, seeing patients in his private practice and in Boston teaching postgraduate students at Harvard University. Ahmet Keles has many patents bearing his name. His inventions, Keles Slider, Keles Face Mask and Keles Keyless Expander, are produced and widely used in United States. He travels widely to give courses and seminars in orthodontics. He has authored more than 50 scientific publications and many orthodontic textbook chapters. He was the abstract and reviews editor of the World Journal of Orthodontics. He is currently the Vice President of Harvard Society of Advancement of Orthodontics. He received his full Professorship from Istanbul Aydin University in 2018. He is married and has 2 children.

Joseph Bouserhal
Class II Correction from Adolescent to Adult: Some Thoughts...
Class II malocclusion is considered one of the most common problems to solve in orthodontics. Differential diagnosis constitutes a main pillar in addressing such deformations in order to be able to apply individualized therapeutic procedures.
Based on the above, each Class II has to be corrected differently and no cookbook to follow exists. A thinking classifying dento-alveolar, skeletal and soft tissue components, as well as identifying maxillary from mandibular etiology, has to be developed and applied.
This presentation will expose an Individualized Orthodontic Philosophy applied to adolescent and adult Class II cases through differential diagnosis and individualized treatment planning.

Curriculum Vitae
AFFILIATIONS:
• Professor and Research Director, Saint Joseph University of Beirut, Lebanon
• Adjunct Clinical Professor, Boston University, USA
• Member, Angle Society of Orthodontists, East Component, USA
• Member, Tweed Foundation for Orthodontic Education and Research, USA
• Member, Executive Committee of the World Federation of Orthodontists.
DEGREES:
• Doctor in Dental Surgery, Saint Joseph University of Beirut, Lebanon
• Master Degree in Orthodontics, Catholic University of Louvain, Belgium
• Doctorate Degree, University of Liège, Belgium
• Diploma of Specialist in Lingual Orthodontics, Paris VII University, France
• Diploma in Dental Clinical Research, Toulouse University, France
• Diploma in 3D Imaging, Toulouse University, France
• Diploma in Sleep Apnea, Paris VII University, France.

Riccardo Nucera
Patient individualized indirect bonding: a fully digital procedure

Precise bracket positioning is essential in order to achieve all the benefits of straight-wire orthodontic appliance. Precise bracket positioning leads to better treatment results and shorter treatment time. Digital orthodontic approach to indirect bonding allows clinicians to virtually plan orthodontic bracket positioning on virtual 3D dental patient’s models and to construct brackets trays with rapid prototyping techniques for indirect bonding.
The aim of the presentation will be to illustrate a new approach for indirect digital bonding procedure and explain the advantages of this procedure over the conventional indirect bonding procedure. This new approach was designed in order to perform individualized bracket positioning according to the individual patient characteristics.
The proposed indirect bonding technique requires the following step: digitalization of patients’ dental arches in Stereo Lithography format (STL), teeth segmentation, virtual dental set-up of ideal patient occlusion, straight virtual bonding bracket positioning on the set-up arches and transfer of the specific bracket-teeth position to the pre-treatment unset-up teeth, brackets trays design for indirect bonding, direct brackets’ tray construction with 3D rapid prototyping techniques, brackets indirect bonding on pre-treatment patients dental arches.
This new approach allows the clinician to define treatment objectives and to visualize the final occlusion before treatment. Moreover, applying this method, bracket’s final position will be planned in order to improve occlusion according to the dental and periodontal patient anatomy. This new approach and its benefits will be illustrated in detail and some clinical cases treated with this bonding approach will be illustrated.

Curriculum Vitae
Professor Riccardo Nucera graduated in dentistry in 1999 at the School of Dentistry of the University of Messina. In 2003, he obtained a PhD in General Dentistry. In April 2008, he achieved a second PhD in Orthodontics and Pediatric Dentistry. In 2011, he attained a Master in Science at the University of Chieti-Pescara attending three years Orthodontic Program. In 2012, he became Assistant Professor of Department of Biomedical and Dental Sciences and Morphofunctional Imaging of the University of Messina. Recently he became professor of Orthodontics at the school of dentistry of the University of Messina. He published several articles in peer reviewed orthodontic journals. He lectured in several national and international meetings. His research interests focus on biomechanics, imaging and digital orthodontics.

Theodore Eliades
Bonding, bracket selection, mechanotherapy, debonding and fixed retainers: a list of misconceptions which grew to become mainstream practice

The lecture analyzes selective engineering aspects of materials in everyday practice with the objective of providing an informed rather than empirically-driven, and unsubstantiated selection of materials and techniques, for a variety of clinical stages including:
a. bonding to enamel and restorative materials;
b. bracket selection and effects on treatment;
c. ligation media such as elastomeric and steel ligatures and self-ligating brackets;
d. wire sequence;
e. debonding protocols; and
f. lingual fixed retainer attributes.
With a very limited materials science component introduced, the participant is escorted in the analysis of the phenomena accompanying the ligation of a wire into a bracket slot or seating of an aligner onto an arch. Within this context, several misconceptions related to the use of materials and techniques are clarified including the:
a. reduced forces exerted by aligners relative to conventional treatment;
b. favourable role of sandblasting in enamel bonding;
c. association of resin tag length into enamel with bond strength and the role of primers in bonding;
d. energy of a polymerization lamp as a decisive criterion in choosing a product;
e. utilization of rectangular wires as preferred levelling mechanotherapeutical scheme;
f. use of square or rectangular NiTi wires for torque application;
g. decreased force levels applied with passive self-ligation appliances;
h. debonding and the modulation of preferred failure pattern;
i. assumption of straightwire precision;
j. debonding and the generation of aerosol with xeno-estrogenic properties; and
k. chair-side lingual fixed retainer bonding.

Curriculum Vitae
Theodore Eliades is Professor and Director of the Clinic of Orthodontics and Pediatric Dentistry, as well as Director of Research, and Interim Director of the Institute of Oral Biology at the Center of Dental Medicine, University of Zurich. He graduated from the School of Dentistry, University of Athens, and completed his Orthodontic residency at the Ohio State University. He earned a Master’s from Ohio State, a doctorate in medicine from the University of Athens, and a PhD with D.C. Watts from the University of Manchester, where he also completed a DSc degree-the first in history higher doctorate awarded to an orthodontist in the UK. He has published 230 papers and 50 chapters, and edited 12 textbooks, which have received 8.500 citations. His forthcoming book (Eliades T, Athanasiou AE. Orthodontic aligner treatment: a review of materials, clinical management and evidence, Thieme) will be published in 2020. An elected Fellow of the Institute of Materials, Minerals and Mining, and the first dentist Fellow of the Royal Society of Chemistry, and the Institute of Physics (UK), Prof. Eliades has been Editor-in-Chief of the J Dent Biomech, Assoc. Editor of the EJO, the AJODO, and the Progress Orthod, the 2018 Milton Sims Visiting Professor at the University of Adelaide, while he was offered the 2020 Noel Martin Visiting Chair at the University of Sydney. He has co-supervised or examined 50 theses at 11 Universities from 7 countries. Work from his students has received the Bengt Magnuson prize of the IAPD and 3 WJB Houston research poster awards of the EOS.

Athanasios E. Athanasiou
Unwanted side-effects of orthodontic treatment on the dental and periodontal tissues – Is the retention period harmless? – Problems associated with the non-physiological eruption of the canines.

Although the risk of a complication or a side-effect during orthodontic treatment is significantly lower compared to other more interventional medical and dental treatments, the relevant literature most frequently refers to adverse effects associated with the use of orthodontic appliances used for the correction of malocclusions in children, adolescents and adults.
There will be a thorough presentation of (a) the changes in enamel as a result of bonding, use and debonding of fixed orthodontic appliances, (b) root resorption associated with orthodontic treatment or unknown etiology, (c) periodontal damage during orthodontic tooth movement and/or during retention, and (d) the disastrous effect of impacted teeth on the adjacent teeth during their eruption or orthodontic traction.
The lecture presents and categorizes problems in dental and periodontal tissues that may occur during or after the end of an orthodontic treatment, discusses about their known or suspected etiology, and proposes therapeutic protocols in order to limit or avoid them.

Curriculum Vitae
Athanasios E. Athanasiou is the Executive Dean and Professor of Orthodontics at the Department of Dentistry, School of Medicine, European University Cyprus. He graduated from the School of Dentistry, National and Kapodistrian University of Athens, Greece, and completed his Orthodontic Residency at the Temple University, USA. He earned an MSD from Temple University and a Dr Dent from the National and Kapodistrian University of Athens. He was President of the World Federation of Orthodontists, the European Federation of Orthodontics and the Greek Orthodontic Society, Dean of the School of Dentistry and Professor and Chair of Orthodontics, Aristotle University of Thessaloniki, Greece, Dean and Professor of Orthodontics at the Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, UAE, and Coordinator of Postgraduate Orthodontic Education at Aarhus University, Denmark. He has co-supervised 64 Ph.D. and Master’s theses, has published more than 190 scientific articles and chapters, has edited 3 textbooks, and has made scientific presentations in 49 countries. He serves as referee or member of the editorial board in many scientific journals. He was external assessor for various institutions including the Arab American University, King Abdulaziz University, UAE Ministry of Higher Education, University of Adelaide, University of Hong Kong, University of Jordan, University of Kuwait and University of Sydney. He is honorary member of the British Orthodontic Society, Cyprus Orthodontic Society, Egyptian Orthodontic Society, Lebanese Orthodontic Society, Macedonian Orthodontic Society and South Africa Society of Orthodontics. He has received the Edward Cherkas Memorial Award by Temple University, the Zendium Prize by Aarhus University, the Louise Ada Jarabak Memorial Award by the American Association of Orthodontists and the Award of the European Federation of Orthodontics. Professor Athanasiou maintains a private practice limited to orthodontics in Athens, Greece.

Demetrios J. Halazonetis
Digital experiences
Digital technology has already been introduced to clinical applications in the field of Orthodontics and is changing the way it is practiced. Continuous monitoring of its advances is imperative and the training of new orthodontists should include digital techniques such as intraoral and extraoral scanning, treatment planning in digital models and computerized tomography archives, manufacturing of clear aligners or splints and other appliances with computer-aided designing programs, printing of digital models and appliances and the fabrication of surgical models and guides. Applying these techniques requires a considerable training time on a theoretical and practical basis. Since the teaching staff of the orthodontic laboratories may not have the necessary expertise, while the cost of the software and the machines is high, the accustomization and progress of the students are slow. In this presentation, the basic applications of digital technology in Orthodontics and the experiences from its practical use in the Orthodontic Laboratory of the National and Kapodistrian University of Athens will be mentioned. In particular, its positive features will be analyzed, as well as the problems of techniques, such as intraoral scanning, the use of software for planning and simulation of orthodontic movements and surgical incisions, 3D-printing of computerized tomography archives and printing of models for the fabrication of clear aligners. For the time being, many of these applications are complex, require in-depth knowledge, and significant investment of clinical and laboratory time. Their automation will render them more accessible, but the orthodontist should know the basic principles of the technology that he/she uses and should practice it in an evidence-based way.

Curriculum Vitae
Demetrios Halazonetis is Professor and Chair at the Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens.
He received his dental education at the National and Kapodistrian University of Athens (1979 - 1984) and his orthodontic training at the Orthodontic Department of Tufts University, Boston, USA, where he also completed a Master’s of Science course. He concluded a doctoral thesis at the University of Athens in 1994. He has been in private practice of orthodontics in Athens, Greece, since 1987. Professor Halazonetis has published more than 60 scientific research papers in peer-reviewed journals. He is the author of the Viewbox cephalometric software and Associate Editor of the Am J Orthod Dentofacial Orthop. His research interests and areas of expertise include cephalometrics, imaging, computed tomography, facial aesthetics and application of geometric morphometric methods to analysis of craniofacial shape.

Elçin Esenlik
Corticotomy-assisted orthodontics: differential diagnosis and different modalities.
Corticotomy-assisted orthodontics is well known for accelerating orthodontic tooth movement rates and correspondingly shorter treatment durations. There have been different surgical techniques for decortication of the alveolus including grafting procedures introduced by many clinicians in the literature. Besides reducing the treatment time, there are some other indications of these decortication procedures for facilitating orthodontic treatment, such as augmentation of the alveolus in patients with deficient alveolar bone, decompensation of the incisors in patients undergoing orthognathic surgery, nonextraction treatment in borderline cases, or the movement of partially or totally ankylosed teeth. One of the important benefits of these techniques is enhancing the limitation of anatomic walls: in particular, expanding the range of movement of the incisors. While these approaches decrease the risk of bone dehiscence and improve the periodontal condition, they may ensure the stability of orthodontic treatment, and possible complications and risk factors should be considered before the treatment. Differential diagnosis in patients and designing surgical and orthodontic approaches are critical for patients individually.

Curriculum Vitae
Dr. Elçin Esenlik is the Chair of the Department of Orthodontics at Akdeniz University, Antalya (Turkey). Following her DDS Degree in 1997, she received her PhD degree in Orthodontics from Ankara University in 2004 and she did private practice in Ankara for 3 years. She worked as a full time faculty at Süleyman Demirel University, Isparta from 2007 to 2017. She became an Assoc. Prof.Dr. in 2013 in the same university. She was involved in Cleft and Orthognathic Surgery Team in Isparta. She was a Research Fellow in the Wyss Department of Plastic Surgery at New York University Medical School (2015-2016).
Dr. Elçin Esenlik conducted many clinical and experimental research projects in the areas of cleft lip and palate treatment and functional orthopedics. Twenty doctorate students and residents graduated under her consultation. She was assigned to many administrative tasks in the University like Vice Chair and Coordinator of the Education of the Health Science Institude and she has many international and national publications and presentations. She organized an International Craniofacial Anomalies Congress in 2013 and, in the same year, organized a Presurgical Infant Orthopedics Workshop with Dr. Latham and Dr. Spolyar in Isparta,Turkey. She also attended three NAM worksops (Dr. Grayson) at NYU.
Dr. Esenlik’s researches have focused on craniofacial orthodontics including cleft lip and palate treatment, presurgical infant orthopedics, orthognathic surgery, distraction osteogenesis, functional orthopedic treatments, skeletal anchorage based orthopedic treatments, and issues related to accelerated orthodontic tooth movement.

Christos Angelopoulos

Advanced diagnostic imaging meets Orthodontics

Admittedly, modern imaging techniques have revolutionized dentistry. Even more in Orthodontics where imaging is not only diagnostic but also a tool for studying and analyzing each case. This became apparent a few years ago with the introduction of cone beam computerized tomography (CBCT). Using this tool, orthodontists were able for the first time to see and evaluate three-dimensional complex anatomical facial structures, impacted teeth and even perform cephalometric analysis.

Another diagnostic technique that has a lot to offer in orthodontics is magnetic resonance imaging (MRI). Magnetic resonance is the only diagnostic tool that can visualize soft tissues along with hard tissues, which is especially valuable in evaluating TMJ.

Finally, the anatomical biomodels (printed models) of the jaws, skulls etc. also provide important diagnostic information to the orthodontist especially for asymmetries of the face as well as other skeletal abnormalities.

In this presentation we will analyze the utility and applications of all modern imaging techniques in Orthodontics. We will also discuss about the potential risk of radiation to patients and especially children.

Curriculum Vitae

Dr. Christos Angelopoulos is a graduate of the School of Dentistry, Aristotle University of Thessaloniki. He specialized for three years in Maxillofacial Radiology at the University of Missouri - Kansas City, where he obtained his specialty of Oral and Maxillofacial Radiology and the title of Master of Science. He completed his doctoral dissertation in the Laboratory of Oral and Maxillofacial Surgery of the School of Dentistry of the Aristotle University of Thessaloniki, on the subject of Cone Beam Computerized Tomography (CBCT).

He is also a graduate of the American Board of Oral and Maxillofacial Radiology.

Dr. Angelopoulos has served as faculty at the University of Missouri - Kansas City (Assistant Professor) and Columbia University (Associate Professor and Director of the Radiology Laboratory). He is currently an Associate Professor at the Laboratory of Dentoalveolar Surgery, Implantology, Radiology of the School of Dentistry of the Aristotle University of Thessaloniki, and is in charge of Maxillofacial Radiology / Radiology.

Dr. Angelopoulos served as President of the American Academy of Maxillofacial Radiology in 2014-2015 as well as Advisor of the Executive Committee of the American Academy of Maxillofacial Radiology for 8 consecutive years (2008-2016).

He has recently served as an Associate Editor of the journal "Oral Medicine, Oral Surgery, Oral Pathology, Oral Radiology, and Endodontics" (2010-2016). He has published more than 40 scientific papers and presented many scientific lectures at conferences, both at home and abroad on various radiological topics.

Alexandra K. Papadopoulou
In the era of digital technology, where does orthodontic treatment with sequential clear aligners stand? Evidence and misconceptions.
Current advances in orthodontics are focusing on the development of 3-dimensional (3D) digital methods that could assist in the accurate diagnosis and delivery of individualised appliances with precise fit both for a predictable and to a highest standard of treatment. Patient perceptions on esthetics and the broadening of the target group of orthodontics also into adults seeking treatment have mandated the need for designing invisible and effective orthodontic appliances. Invisalign™ created the major breakthrough in this field and initially the system was designed to mainly attract adults. Since the first launch of this innovative treatment modality of sequential clear aligners, Invisalign™ further introduced improvements such as precision attachments and modifications in the properties of the aligner materials in order to facilitate better performance and subsequently expand the applications into more complex cases. The expiration of Invisalign™ patent has resulted in the introduction of other sequential clear aligner options in the market, developed by companies specialised in dental materials and digital technology. In this presentation, research evidence relevant to the efficacy, efficiency and biocompatibility of sequential clear aligner use for the treatment of various types of malocclusions will be shown and combined with clinical cases.

Curriculum Vitae
Dr Alexandra K. Papadopoulou is a Senior Lecturer in the Department of Orthodontics of The University of Sydney, Australia. Dr Papadopoulou has received her Dental Degree, Certificate in Oral Surgery, Implantology and Dentomaxillofacial Radiology, Specialisation Degree in Orthodontics and PhD from the Faculty of Dentistry, Aristotle University of Thessaloniki, Greece. She also completed a 2-year Fellowship in the Department of Histology and Embryology, Faculty of Medicine, Aristotle University of Thessaloniki, Greece. Dr Papadopoulou has supervised more than 20 Doctor in Clinical Dentistry (DClinDent) Orthodontics Thesis and additional Higher Research Degree projects (Masters in Philosophy and PhD) in the University of Sydney. Dr Papadopoulou has published several research papers in peer-reviewed journals and is also a reviewer in most orthodontic high impact factor journals. She has received the 2015 International Align Research Award from Align Technology. Her main research interests focus in the efficacy of dentofacial orthopaedic treatment, adjunct methods in accelerating orthodontics, skeletal anchorage devices, orthodontically induced inflammatory root resorption (OIIRR), biology of orthodontic tooth movement, obstructive sleep apnoea and airway changes with orthodontics, interdisciplinary treatment.

Eleftherios G. Kaklamanos
How to retain? What helps? Patient-centered strategies

After active orthodontic treatment, teeth show the tendency to return to their original position. Thus, retention represents a fundamental phase among orthodontic procedures for almost every patient. But, how to retain? This is the million-dollar question in orthodontics.
In this brief review the contemporary evidence-based information on retention will be explored and the patient-centered parameters contributing to successful retention strategies will be discussed.

Objectives & Learning Outcomes

Objectives: This lecture will provide a contemporary overview of the evidence-based information on retention, as well as discuss the patient-centered strategies contributing to successful of post-treatment management.
Learning outcomes: This presentation will highlight the relevance of combining high-quality evidence and patient-centered strategies in day-to-day clinical practice.

Curriculum Vitae
Eleftherios Kaklamanos graduated from the School of Dentistry, Aristotle University of Thessaloniki, where later he undertook his orthodontic training and gained a Master of Science degree. He also possesses a Master of Arts in Healthcare Management degree and a Certificate in Preventive Dentistry. His PhD thesis was undertaken at the School of Medicine, Aristotle University of Thessaloniki on the topic of mandibular condyle development.
He is currently Associate Professor of Orthodontics at the Mohammed Bin Rashid University of Medicine and Health Sciences in Dubai, United Arab Emirates, where he is involved actively in all aspects of postgraduate orthodontic education. He is also the Editor-in-Chief of the “Hellenic Orthodontic Review”, official publication of the Greek Orthodontic Society.
His current research interests are in the patient-reported aspects of malocclusion and its management, the assessment of the effectiveness and efficiency of various orthodontic treatment modalities, as well as the effects of medications and various physiological or pathological conditions on the response to orthodontic force.
Dr. Kaklamanos published several peer-reviewed articles across different disciplines and has given numerous lectures at national and international conferences.

Georgios Kanavakis
Facial attractiveness – Beyond teeth. Above norms.

Facial and smile esthetics are the main reasons for patients of all ages to seek orthodontic care. The new paradigm in orthodontic treatment planning focuses on facial and smile appearance, as well as overall improvement in quality of life. However, facial esthetics and soft tissue morphology are assessed with traditional norms that do not take into consideration patients’ perceptions.
This presentation will focus on factors that influence self-perception of facial and smile appearance. How do objectives features influence our opinion and to what extent do personality and self-esteem affect our perception? Which facial features tend to have the most significant impact on self-perceived facial attractiveness? Within this context, the overall role of the orthodontist in modern times will be revisited and the social impact of our profession will be discussed.

Learning objectives:
1. Attendees of this lecture will be able to recognize the effect of physical and psychological factors on self-perception of facial and smile appearance.
2. To evaluate differences between genders in self-perception of facial and smile attractiveness.
3. To revisit and redefine the impact of orthodontics in patients lives and modern society.

Curriculum Vitae
Georgios Kanavakis is a Senior Teaching and Research Assistant in the Department of Orthodontics at the University of Basel in Switzerland, and a Visiting Assistant Professor in the Department of Orthodontics at Tufts University, School of Dental Medicine in Boston, MA. He is a Diplomate of the American Board of Orthodontists.
Dr. Kanavakis received his dental degree at the Aristotle University of Thessaloniki, School of Dentistry. He holds a postgraduate certificate in Temporomandibular Disorders and Orofacial Pain, a Master of Science, and a postgraduate certificate in Orthodontics and Dentofacial Orthopedics from Tufts University, School of Dental Medicine.
Dr. Kanavakis has published more than 20 articles in peer-reviewed orthodontic journals, has co-authored two orthodontic book chapters and is a reviewer for several orthodontic publications. His main research interests focus on Factors affecting the Perception of Facial Appearance, Three-Dimensional Facial Analysis, 3D Imaging, as well as the use of skeletal anchorage in orthodontic clinical practice.

Spyridon N. Papageorgiou
Optimizing orthodontic treatment with fixed appliances in terms of improved outcome and decreased duration
Fixed appliances have become an integral part of contemporary orthodontic treatment, as they enable full control of tooth movement in all dimensions. We, as orthodontists, everyday strive to deliver the best possible results in terms of occlusion that supports a harmony between function, esthetics, and stability. However, at the same time, prolonged duration of treatment with fixed appliances is associated with several potential adverse effects, including loss of periodontal support, white spot lesions, root resorption, and tooth discoloration. Therefore, the orthodontist should strive in a pragmatic way to reconcile the result and duration of orthodontic treatment to meet the patient’s needs. Several factors can influence the outcome or duration of orthodontic treatment including the type of the orthodontic appliance, bonding procedures, anchorage reinforcement, physical / surgical / pharmacological adjuncts, and patient compliance. Aim of the present lecture is to provide an evidence-based up-to-date guide on the clinical importance of these factors, so fixed-appliance treatment can be optimized in terms of improved occlusal results and reduced treatment duration.

Curriculum Vitae
Dr. Papageorgiou is Senior Teaching and Research Assistant at the Clinic of Orthodontics and Pediatric Dentistry in the University of Zurich. He graduated the Dental School of Aristotle University of Thessaloniki and completed his orthodontic residency in the University of Bonn, where he was also awarded his doctorate with Summa Cum Laude. He has given many invited lectures or workshops in international congresses, while he has published over 100 papers in international peer-reviewed journals, and over 10 textbook chapters. His research has been received over 1600 citations, has a Hirsch-index of 22, reviews for over 30 journals, and is in the editorial board of 6 journals. He has received several awards, including awards from the American Association of Orthodontics (David L. Turpin Award in 2012 and Helen E. Dewel Award in 2018), the British Orthodontic Society (Chapman Prize in 2018), the European Orthodontic Society (W.J.B. Houston Memorial Award in 2017), the Greek Orthodontic Society (Best Paper Award in 2015), and the Greek Dental Association (Best Research Award in 2010). His main research areas include optimized treatment mechanics, comparative effectiveness / efficacy in orthodontics, methodological aspects of clinical trials, and sources of bias in clinical research.

Treatment approaches of Class II dental and skeletal problems in young and adult patients

Coordinator: M. A. Papadopoulos
Participants: O.-E. Kolokitha, A. Chatzigianni
Postgraduate Students of Dept. Orthodontics: Thomas Georgiadis, Vasilios Dontsos, Vasilios Evangelidis, Dimitrios Katsanos, Georgios Kouvelis, Aikaterini Papadimitriou

Class II malocclusions represent a significant percentage of orthodontic cases treated in the clinical practice. In general, the treatment of Class II malocclusion can be performed in two steps or in one stage, according to the chronological, dental and skeletal age of the patient and treatment goals. In the two-step treatment upper molar distalization appliances or forward mandibular repositioning devices can be initially applied to correct the dental or skeletal discrepancy and to achieve a Class I canine and molar relationship. Final occlusion is established in the majority of the cases with the use of multibracket appliance following phase 1 of treatment. The result of orthodontic/orthopedic force applications in growing patients in one or two-stage treatment will be a subsequent change in the maxillomandibular occlusal relationship. Post-pubertal or adult patients can benefit also from orthodontic treatment with the use of different means. The aim of this round table is to analyze the therapeutic alternatives of Class II cases in the mixed and permanent dentition by presenting a case series of patients treated at the Postgraduate Clinic of the Department of Orthodontics of the School of Dentistry at the Aristotle University of Thessaloniki, Greece. More specific, clinical cases treated with Headgear appliance, Class I appliance, Activator, Twin-Block, SOS Activator, Jusper-Jumper or Herbst appliance will be shown, while extraction cases and an orthognathic surgery case will be also presented.

 

Curriculum vitae

Moschos A. Papadopoulos
Dr. Moschos A. Papadopoulos is Professor, Chairman and Program Director at the Department of Orthodontics, School of Dentistry, Aristotle University of Thessaloniki, Greece. He is also Past President of the Balkan Association of Orthodontic Specialists and Honorary Editor of the "Hellenic Orthodontic Review", while he served as President of the Orthodontic Society of Northern Greece, as Asst. Editor of the "World Journal of Orthodontics" and as Assoc. Editor of "Stoma". He also is/or served as Member of the Editorial Board of 19 peer reviewed journals, and as Reviewer for 44 orthodontic, dental and medical journals. He is an active member in more than 22 national and international societies, federations, and unions.
Dr. M. A. Papadopoulos received several awards and distinctions, among others the "Joseph E. Johnson Clinical Award” and the "Turpin Award for Evidence-Based Research” from the American Association of Orthodontists, and the “Regional Award of Merit” from the World Federation of Orthodontists (WFO).
Currently the main clinical and research interests of Dr. M. A. Papadopoulos include the subjects of "noncompliance orthodontic treatment", "use of miniscrew implants as temporary anchorage devices in orthodontic treatment", and "evidence based orthodontics".
Dr. M. A. Papadopoulos has written the books entitled "Orthodontic treatment for the Class II non-compliant patient: Current principles and techniques", "Skeletal anchorage in orthodontic treatment of Class II malocclusion", and "Cleft lip and palate: Diagnosis and treatment management", has published more than 200 scientific publications, and has presented more than 350 lectures, courses and papers worldwide.

Olga-Elpis Kolokitha
Olga-Elpis Kolokitha is Associate Professor of Orthodontics at the Department of Orthodontics of the School of Health Sciences of the Aristotle University of Thessaloniki. She graduated from the Dental School of the University of Thessaloniki in 1991 and then completed postgraduate studies in Orthodontics at Philadelphia University in the USA, where she obtained a Master's Degree in Orthodontics and a Master's degree in Dentistry in 1995. She holds a PhD in the University of Thessaloniki since 2002.
She is a member of the Editorial Committee of four scientific journals and is a scientific reviewer of ten reputable scientific journals.
She was a member of the Board of Directors of the Greek Orthodontic Society and the Orthodontic Society of Northern Greece. She was elected representative of the Dental Association of Thessaloniki at the General Assembly of the Greek Dental Association.
She has authored a Research Monograph titled Rapid Palatal Expansion. Changes in the dimensions of dental arches after orthodontic treatment with rapid palatal expansion and fixed orthodontic appliances.
She has published 45 scientific papers in Greek and international scientific journals. Her writings have received at least 400 bibliographic references from other authors. Olga-Elpis Kolokitha has held many lectures and announcements in Greece and abroad. Her research work includes studies on lateral cephalometric radiography, the characteristics of dental arches using study casts, the epidemiology of malocclusions, the cephalometric radiographic methods of prediction of the therapeutic effect in orthognathic surgery, the hypersensitivity to nickel in orthodontic patients, the rapid expansion of the palate and aesthetics in patients with clefts.
Since 1995 she holds a private orthodontic clinic in Thessaloniki.

Athina Chatzigianni
Dr. Athina Chatzigianni is Assistant Professor and Coordinator of the Postgraduate Program in Orthodontics at the Department of Orthodontics, Dental School, Aristotle University of Thessaloniki (A.U.Th.), Greece. In the past she has worked as research fellow at the University of Nijmegen in the Netherlands. She continued her Master of Science Thesis and Specialty in Orthodontics at the University of Athens, Greece and she received her Doctorate degree from the University of Bonn, Germany. In 2016 she was trained in craniofacial anomalies at the Hansjörg Wyss Department of Plastic Surgery in New York. She has received many distinctions among which an Award from the Dental Association of Thessaloniki for the highest graduation degree upon graduation from Dental School (2002), the WJ Houston Poster Award for young researchers (2009), the Excellence Scholarship for Postdoctoral Researchers (2012), 2nd poster prize at the Mediterranean Orthodontic Congress and others. In 2019 her research proposal was awarded funding by the program for the Development of Human Resources, of Education and Lifelong Learning. She is General Secretary of the Orthodontic Society of Northern Greece (O.S.N.G.) and the Balkan Association of Orthodontic Specialists (B.A.O.S). Her interests include craniofacial anomalies, morphometric methods, 3D imaging, skeletal anchorage and biomarkers.

 

Yassine Messaoudi
3D individualized management of impacted and ankylosed teeth: pushing back the limits!
Impacted and ankylosed teeth may be one of the most challenging situations for orthodontists. Through the study of clinical cases, from simple to more complex, we will see how 3D imaging pushes back the limits allowing the emergence of many clinical applications. 3D surgery and orthodontics, individualized diagnosis and treatment plan, buccal approach for palatally impacted canines, mini-invasive and guided surgery, efficient orthodontic biomechanics (bonding, traction...) will be discussed in this presentation.

The Lecture is sponsored by DENTALCOM - Papazoglou G. S.A. - FORESTADENT

Curriculum Vitae
https://www.linkedin.com/in/yassine-messaoudi-a435ba78/
• DDS, Specialist Orthodontist Assistant Professor – Lyon 1 University - France
• Certificate of Special Clinical Studies in Orthodontics – CECSMO
• Certificate of Advanced Studies in Dentistry - AEA
• Former resident of Lyon Hospitals
• Master in Biological and Medical Sciences
• Postgraduate Diploma in Head and Neck Oncology
• University certificate in Implantology
• European Federation of Orthodontics Award

Dr. Messaoudi has delivered presentations both nationally and internationally and received several award winning lectures and posters. In 2012, he won the European Federation Award as Best Speaker in the European Young Speaker Contest in Monaco. He is a member of the World Federation of Orthodontists (WFO), the French Society for Dento-Facial Orthopaedics (SFODF) and the International Association Of French Speaking Orthodontists (AIOF). His fields of interest are adult orthodontics, orthognathic surgery, impacted teeth, congenital and acquired craniofacial anomalies.

Aim

The aim of this study was to examine the correlation of the root resorption of the central and lateral maxillary incisors due to the ectopic position of the canines using the facial CT.
Material and Methods
61 patients presenting the unilateral or bilateral ectopic position and impaction of the canine were examined by the method of facial CT.
No patient had undergone orthodontic treatment in the past. Eleven different parameters were examined, including the direction of the canine, the distance from the lateral incisor’s apex, the distance from the median palatal seam, the existence and the size of the dental follicle of the ectopic tooth, the diagnosis and evaluation of the root resorption of the adjacent teeth, coexistence with possible congenital missing or ankylosed teeth as well as the angle formed by the ectopic canine in relation to the vertical axis of the lateral and central incisors of the adjacent side.
The results were evaluated using the logistic regression statistical analysis.
Results
The statistical analysis showed that there is no correlation between the left ectopic canine with the buccal-labial direction and the age of the patient. Resorption of the right incisor’s apex was found in 13.3% of the cases whereas the left one’s only at 6.45%.
There is a correlation between age and extreme resorption as well as angulation of the ectopic canine and the vertical axis of the incisors.

1. INTRODUCTION
Space maintenance appliances are used as preventive orthodontic treatment after early loss of deciduous teeth in order to maintain the overall length of the dental arch until the eruption of the permanent successor teeth.
2. PURPOSE
The purpose of this study is to present the etiology and consequences of premature loss of deciduous teeth and all the space maintenance appliances.
The causes of premature loss of deciduous teeth cover a wide range of pathology. Dental etiology comes first with diseases and abnormalities. The main reasons are caries and dental trauma followed by ectopic eruption, periodontal disease, dental malformations and hypoplasia as well as unsuccessful or poorly performed dental treatments.
3. METHOD
New digital technologies are taking into account diagnosis, treatment and laboratories. The digital world can help the dentist diagnose and treat: diagnosis through the acquisition of radiographic images (CBCT) or scanners that allow the creation of 3D digital models - about treatment thanks to the CAD/CAM system. We used a digital system to improve the quality of treatment and reduce clinical time.
Following is a presentation of a clinical case of the fabrication of a space maintenance appliance with the contribution of modern technology (IOS, CAD/CAM) made of CrCoW (Remanium Star) alloy. The appliances were digitally designed using digital scanner and design software.
4. CONCLUSION
Digital technologies and new materials are becoming more popular, better and are changing the way of diagnosis and treatment in orthodontics.

INTRODUCTION

Congenital lack of maxillary lateral incisors is a common finding among dental patients. Treatment choices can be summarized in opening, or closing the spaces that arise due to the missing lateral incisors. The aim of this paper is to present, with the help of clinical cases, all the factors that have to be taken in account in order to achieve both an excellent esthetic and a satisfactory functional result.
METHODS AND MATERIALS
A. Orthodontic closure of spaces
This choice embraces treatment with fixed Orthodontic appliances in order to close the spaces by replacing the missing lateral incisors with the canines and at the same time by replacing the canines with the premolars. Factors that favor orthodontic treatment and have to be taken in consideration are:
1) Type of malocclusion 2) Lateral view of the face 3) Size, shape and color of the canine and 4) Type of the smile of the patient.

Β. Creating spaces for prosthetic restoration by the means of Orthodontics.
In patients that present with Class III malocclusion, concave profile and zero (0) or negative overjet creation of spaces for prosthetic restoration purposes is the treatment of choice. The needed space for the restoration can be estimated by the help of: 1) Unilateral incisor 2) Golden Rule 3) Bolton Analysis και 4) Diagnostic Waxing.
CONCLUSIONS
Both treatment approaches have strong advantages and disadvantages. It is possible though under the right circumstances to offer a satisfying esthetic and functional result.

PURPOSE: The Beneslider is a skeletal-based appliance on the hard palate for the mesial or distal movement of the upper molars. The purpose of the present study was to determine the initial 3D forces and torques (3D F/M) acting on the upper first molars when being moved with the Beneslider.

MATERIALS AND METHODS: The measuring device consists of three 3D-F/M-sensors (Schunk, Nano 17) with slots for a personalized Beneslider mechanism (center) and palatal band slots (side). Beneslider was activated bilaterally with NiTi springs of 200 cN (Forestadent), 240- and 500-cN (Dentalline).
RESULTS: When using a spring force of 240 cN per side, distal forces of 3.44 ± 0.04 N, distal torques of 24.7 ± 6.13 Nm and 28.37 ± 2.44 Nm of distal tipping torque are exerted on the first molars. In addition, lateral expansion forces of 1.1 ± 0.3 N were observed at the transverse plane and extrusive forces of 1.1 ± 0.5 N at the frontal plane.
CONCLUSIONS: In this study, the original three-dimensional force and torque (3D F/M) systems were identified when activating the Beneslider device. Specifically, the forces and torques observed in the upper first molars appear excessive in relation to clinical guidelines. The unexpected side forces identified may in some cases be clinically significant such as e.g. extrusion forces in open bite cases. These can be compensated by corresponding small pre-activations of the appliance arm guides of approximately 1-1.5 mm.

Digital technology has been introduced in orthodontic practice recently. The use of digital technology is multidimensional: digital impression, diagnosis, treatment planning, design of customized three-dimensional orthodontic appliances (CAD) and their printing (CAM), as well. Digital design of orthodontic appliances is performed with specialized orthodontic software or even with general-purpose software. The easiness of designing such an appliance, its precision, customization and finally printing without the interference of a typical dental laboratory enables the orthodontist himself to control all the stages of manufacturing, from impression and design to printing. The only limitation in the design and printing of such appliances is the fantasy of the clinical orthodontist.

The digital era is here. Soon it will be in almost every dental practice, orthodontic or not. Market dynamics will lead many to deal with the subject and indirectly impose products that do not meet the needs of the physician or are unnecessary in the conditions of the specific practice.

The purpose of this presentation will be to provide a general description of the 3D digital impressioning section of the orthodontic clinic and other specialties such as General Dentistry, Prosthodontics, Implantology. The advantages and disadvantages of new technology will be analyzed, as well as the requirements to fully organize a clinic according to the type of services provided.

Introduction

Early orthodontic treatment is recommended in patients who have not completed mixed dentition in specific cases. It is recommended in Class II Angle cases with increased overjet, prognathism, crossbite and impaction of anterior teeth. The purpose of the treatment is to expand the arches and improve dental occlusion, and at times it helps to avoid a subsequent comprehensive orthodontic treatment. Opinions on the necessity of one or two phases are conflicting.
Presentation of cases
Two cases are reported.
1st case: Boy 6 years old
Skeletal Class II/1, anterior open bite. Mesiodens in the area of #11-#21 which resulted in the inclusion of #11 and the horizontal positioning of the tooth with an upward direction. Two surgical exposures and a partial orthodontic treatment were performed.
2nd case: Girl 11 years old
An accident in the area of the anterior teeth which resulted in the loss of #31 and #32 and the need for endodontic treatment of #21, #22. Skeletal Class III. We proceeded to orthodontic closure of gaps. In a second phase, with a combination of implants and prosthetics a Class III camouflage was performed.
Comments
When initiating orthodontic treatment we should not only take into account the patient's chronological age, but also his dental and skeletal maturity. Accidents may lead to alternative treatment protocols.

1. Introduction

The athletic mouthguard protects both the dental tissue and the temporomandibular joint. Frequent refabrication of mouthguards (MGs) due to breakage and loss, leads to additional impressioning of the arches and need for more storage space. Problems also arise in the accuracy of the impressions due to the difference in thickness that occurs during manufacture. Many patients experience discomfort during the classic impressioning procedure. Finally, for the patients wearing fixed orthodontic appliances, mouthguard refabrication is necessary as there are changes in both bone growth and dentition.
2. Purpose
The purpose of the presentation is the introduction to digital techniques for the fabrication of an orthodontic mouthguard and its application through clinical cases.
3. Method - Materials
Using a dental scanner, and creating digital data. As well as using 3D engineering software software to design and print MG silicone (Digital-MGs) with 3D printer.
4. Results
Clinical practice as well as studies have shown that the fabrication of mouthguards through digital technology is very accurate with a high repeatability but also enjoyable for the patient.
5. Conclusions
Thanks to digital technology the athletic mouthguard can be manufactured and delivered instantly.

BACKGROUND: Aim was to systematically search the literature and assess the available evidence regarding the clinical effectiveness of the Invisalign® system.

METHODS: Electronic database searches of published and unpublished literature were performed. The reference lists of all eligible articles were examined for additional studies. Reporting of this review was based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.
RESULTS: Three RCTs, 8 prospective, and 11 retrospective studies were included. In general, the level of evidence was moderate and the risk of bias ranged from low to high, given the low risk of bias in included RCTs and the moderate (n = 13) or high (n = 6) risk of the other studies. The lack of standardized protocols and the high amount of clinical and methodological heterogeneity across the studies precluded a valid interpretation of the actual results through pooled estimates. However, there was substantial consistency among studies that the Invisalign® system is a viable alternative to conventional orthodontic therapy in the correction of mild to moderate malocclusions in non-growing patients that do not require extraction. Moreover, Invisalign® aligners can predictably level, tip, and derotate teeth (except for cuspids and premolars). On the other hand, limited efficacy was identified in arch expansion through bodily tooth movement, extraction space closure, corrections of occlusal contacts, and larger antero-posterior and vertical discrepancies.
CONCLUSIONS: Although this review included a considerable number of studies, no clear clinical recommendations can be made, based on solid scientific evidence, apart from non-extraction treatment of mild to moderate malocclusions in non-growing patients. Results should be interpreted with caution due to the high heterogeneity.

The diagnosis and treatment plan for impacted canines was, until recently, based on 2-dimensional radiographic imaging and mainly panoramic radiography. The location of the position, the investigation of the possible resorption of the adjacent teeth, and the possibility of bringing them in the dental arch are key diagnostic elements for orthodontic treatment of upper incisors. Today the use of cone beam computerized tomography (CBCT) is well known and is a useful tool in the orthodontic management of impacted teeth. Its benefits include decrease of the overall treatment time after its evaluation, high rates of successful treatment plans, and reduction of surgical complications. The purpose of this presentation is to investigate the use of CBCT in the diagnosis of orthodontic canines from the standpoint of orthodontics and to compare it to 2D imaging. A search was performed on Pubmed database with keywords impacted canines, cone beam computed tomography, 3D imaging, panoramic radiographs, orthopantogram, and two dimensional imaging. In conclusion, CBCT is a very useful and in many cases indispensable tool in the management of impacted canines contributing to a reliable diagnosis, prognosis and planning of orthodontic treatment.

BACKGROUND: Bisphosphonates are a class of drugs prescribed for several osseous related disorders owing to their ability to regulate bone turnover, which could in turn affect orthodontic treatment outcomes.
OBJECTIVE: To examine the effect of bisphosphonate (BP) use on orthodontic patients through clinical and radiographic measurements.
SEARCH METHODS: Systematic and unrestricted search of 17 databases complemented with additional hand-searches were performed up to March 2019.
SELECTION CRITERIA: Articles reporting on human patients with a history of BPs administration that received orthodontic treatment were eligible for inclusion.
DATA COLLECTION AND ANALYSIS: Data regarding the medical profile of the patients, the specific type of malocclusion and the performed treatment plan, as well as the clinical and radiographic outcomes were extracted. Quality assessment was performed by the ROBINS-I tool for the cohort studies and by a slightly modified checklist from the original one proposed by Agbabiaka et al. for the case reports.
RESULTS: 7 articles (1 retrospective cohort study and 6 case reports) were eventually included in the present review including 122 subjects (29 patients and 93 controls) reporting on the clinical and radiographic changes following orthodontic treatment of patients during or after BPs use. BPs seem to have a controversial effect on the clinical and patient-reported variables, even though the majority of the included patients presented with compromised treatment results and a rather slow rate of tooth movement. Most radiographic findings revealed mild root resorption, widened periodontal ligament spaces and sclerotic changes on the surrounding alveolar bone. However, these results should be interpreted with caution, due to the limited number of the eligible articles and their limitations.
LIMITATIONS: The included studies were of rather low quality due to study design and incomplete reporting.
CONCLUSIONS AND IMPLICATIONS: BP administration seems to be associated with compromised clinical outcomes, prolonged treatment time, and moderate changes on the roots and surrounding tissues of orthodontic patients.
REGISTRATION: Non-registered.
FUNDING: None.

Aim of this systematic review was to assess the efficacy of preventive interventions against the development of white spot lesions (WSLs) during fixed appliance orthodontic treatment. Nine databases were searched without limitations in September 2018 for randomized trials. Study selection, data extraction and risk of bias assessment were done independently in duplicate. Random‐effects meta‐analyses of mean differences (MDs) or relative risks (RRs) with their 95% confidence intervals (CIs) were conducted, followed by sensitivity analyses, and the GRADE analysis of the evidence quality. A total of 24 papers (23 trials) were included, assessing preventive measures applied either around orthodontic brackets (21 trials; 1427 patients; mean age 14.4 years) or molar bands (2 trials; 46 patients; age/sex not reported). Active patient reminders were associated with reduced WSL incidence on patient level compared to no reminder (3 trials; 190 patients; RR: 0.4; 95% CI: 0.31‐0.64; Number Needed to Treat [NNT]: 3 patients), flat surface sealants were associated with reduced WSL incidence on tooth level than no sealant (5 trials; 2784 teeth; RR: 0.8; 95% CI: 0.63‐0.95; NNT: 33 teeth), and fluoride varnish was associated with reduced WSL severity on tooth level (2 trials; 1160 teeth; MD: −0.32 points; 95% CI: −0.44 to −0.21 points). However, the quality of evidence was low according to GRADE, due to risk of bias. Some evidence indicates that active patient reminders and flat surface sealants or fluoride varnish around orthodontic brackets might be associated with reduced WSL burden, but further research is needed.

Tasios T, Papageorgiou SN, Papadopoulos MA, Tsapas A, Haidich AB. Prevention of orthodontic enamel demineralization: A systematic review with meta-analyses. Orthod Craniofac Res. 2019 May 13. [Epub ahead of print]

Introduction: The aim of this 2- arm parallel trial was to objectively assess patients’ compliance, in a 3 month period, with Hawley or vacuum-formed retainers in the upper arch, after active orthodontic treatment, through the use of the thermosensitive microsensor TheraMon®.
Methods: Patients who had just completed their orthodontic treatment in the Postgraduate Orthodontic Clinic, School of Dentistry, National and Kapodistrian University of Athens and in a private orthodontic practice, were randomly allocated to either Hawley or vacuum-formed group for retention. Eligibility criteria included patients 12- 18 years of age who had undergone orthodontic treatment in both arches, for no longer than 5 years. The main outcome was the average objective daily difference in compliance measured with TheraMon®, between patients receiving either Hawley or vacuum-formed retainers in the maxillary arch for a period of 3 months. Secondary outcomes pertained to the average objective difference in compliance between the two retainers for the first month in retention and the association between objective measurements of compliance and diary- reported wearing duration times for both the first and the 3- month period. Randomization was implemented with a computer-generated randomization list, with allocation concealed in sequentially numbered, sealed, opaque envelopes. Blinding was not feasible either for the patient or the orthodontist. Patients were instructed to wear the retainer full-time. Data were analyzed using non-parametric statistics, and linear regression with standard errors based on the bootstrap method.
Results: Seventy- seven patients (median age: 14.8 years; interquantile range- IQR: 1.5; range: 12.1- 17.6) were randomized in a 1:1 ratio to either Hawley or vacuum-formed retainer. Baseline characteristics did not present significant differences between groups and one patient from Hawley group was excluded from 3 months follow-up due to microsensor fault. Objectively assessed median daily wear time for the Hawley group was 15.3 hours (IQR: 6.8), while for the Vacuum- formed group 18.3 hours (IQR: 4.6) for the 3 months interval. Patients allocated to vacuum-formed retainers, presented higher wearing values of 2.10 hours/day compared to Hawley group, after adjusting for trial settings (mean difference: 2.10; 95% Confidence Interval [CI]: 0.32-3.89; p=0.02). Patients from private orthodontic practice presented an increased potential for compliance of 2.16 hours/day compared to University settings after adjusting for type of appliance (mean difference: 2.16; 95% Confidence Interval [CI]: 0.34- 3.97; p=0.02). A significant correlation was detected between objective assessment and self-reported compliance for both retention protocols in the first and 3 months interval. No harm was observed during the follow- up period.
Conclusion: The results of this study indicate relatively high compliance in short- term retention phase for both appliances. Vacuum- formed retainers were better accepted by adolescent patients, while those proceeding to private orthodontic practice were more compliant. There was a positive and statistically significant correlation between objective and subjective measures of compliance.
Registration: The trial was registered in ClinicalTrials.gov: NCT03683862
Protocol: The protocol was not published before trial commencement.
Funding: No funding or conflict of interest to be declared.

Georgia Vagdouti, Effimia Karvouni, Elias Bitsanis, Despina Koletsi. Objective evaluation of compliance after orthodontic treatment using Hawley or Vacuum- formed retainers. A two- center randomized controlled trial over a three- month period. ΑJODO-D-19-00355R1 (Accepted for publication).

Introduction: Tooth Transposition is a relatively rare occurrence that is related to teeth eruption and their abnormal occlusion relationships. More specifically, tooth transposition is described as the exchange of position of two adjacent teeth in the same quarter of the dental arch. It appears in the upper or lower jaw and distinguishes in full and incomplete tooth transposition.

Methods and Materials: Case presentation of a young patient (12 years old) with tooth transposition of upper left permanent canine (23) and its movement to the right position.
Results: Treatment plan includes early diagnosis and intervention and placement of fixed orthodontic appliances. The case is still under treatment.

INTRODUCTION: After the third molars, the permanent maxillary canines are the teeth with the highest impaction incidence rate of 1 to 3%. The impaction phenomenon and, furthermore, its clinical relevance is associated with high rates of radical resorption in adjacent teeth, which can compromise the prognosis of affected teeth.
OBJECTIVE: The aim of the present study is to evaluate the prognosis of different treatment protocols for mandibular incisors.
MATERIALS AND METHODS: Pubmed and Cochrane online databases were searched. Of the 429 studies, 16 were included in our study (case studies were rejected) with adults and minors with impacted upper permanent canines, evaluating different therapeutic techniques and their effect on adjacent tissues. The included studies were in English, with a publication date in the previous ten years and radiographic evaluation was performed by computed tomography (CBCT).
RESULTS: A review of the literature showed that surgical and non-surgical impaction treatment presented a good long term prognosis. However, gum recessions and periodontal pockets were more frequently seen in surgical treatment techniques.
CONCLUSIONS: Although treatment of impacted canines of the upper jaw may endanger the periodontal condition and aesthetic effect of the upper teeth, these differences are not of great clinical significance.

The cause of primary tooth impaction could be either an abnormality in the mechanism of eruption or a mechanical factor that obstructs the normal eruption. Due to the fact that both cases have a similar clinical picture they need differential diagnosis as each case demands different therapeutical handling. Primary tooth impaction that is due to incompetence of the eruption mechanism is in great difference to the one that is associated with mechanical obstructive factors. In cases of primary impaction caused by mechanical factors singly teeth are affected while the distal of the affected tooth has a normal position in the dental arch. In cases of primary impaction caused by an abnormality in the mechanism of eruption more that one of the posterior teeth are affected with first and second premolar to have the highest frequency. The aim of the current literature review is to present the causes of each case, the possible clinical, radio-graphical and genetic elements which could help the valid and right diagnosis in order to avoid the failure of the orthodontic intervention along with the emergence of the therapeutic approaches.

The aim of this systematic review is to search the literature and evaluate the existed sources referring to the effects of non-pharmaceutics in treatment of gingivitis in orthodontic patients. A great amount of research was conducted on the data base concerning published and non-published literature, as well as “manual” research on the so called grey literature. Seven (7) clinical studies were included based on the appropriate criteria of the systematic review. Anti-oxidative ethereal oils, chamomile, aloe, honey and probiotics were the substances that were examined on the studies that were included in the systematic review. There was identification of the study results, concerning the beneficial effect of the non-pharmaceutical agents in gingivitis control, as they reduced the dental plaque and the index of the gingival inflammation. To conclude, there is a great amount of literature suggesting that non-pharmaceutical composites can confine orthodontically induced gingivitis and successfully replace the widely used pharmaceutics in order to avoid the side effects of the latter. There is, however, need for more clinical studies.

Introduction: External root resorption is one of the most common undesirable consequences of active orthodontic treatment, with multifactorial and not fully elucidated etiology.
Objective: To investigate the effect of orthodontic treatment with transparent splinters on external root resorption and to compare it with non-stationary orthodontic appliances.
Material/Method: A literature review was conducted on two electronic databases (PubMed, Cochrane Library) with keywords: "root resorption", "clear aligners", "fixed appliances".
Results: Orthodontic treatment-related external root resorption is found radiographically in approximately 73% of completed cases and is associated with a number of predisposing/ aggravating factors, including: the treatment system, the type of dental movement, intensity of applied force, trauma incidence, genetic/systemic factors, root morphology, etc. The available measurements are mainly based on periapical/panoramic radiographs, making it possible to underestimate the resorption. In cases with transparent splinters, external root resorption, although present, appears to be significantly limited in relation to stationary devices. The differentiation is mainly attributed to the localized and low strength orthodontic forces exerted by this technique. CBCT imaging studies confirm its minimal impact on root integrity. The most frequent correlation factor, regardless of technique, is the duration of treatment.
Conclusions: Transparent splint orthodontic treatment appears to be associated with a limited incidence and impact of external root resorption compared to stationary orthodontic appliances. It may be a treatment of choice for high-risk patients, provided that the needs of the incident fall within the therapeutic range of the method.

The aim of this poster presentation is to point out the mechanical, environmental and genetic factors which are associated with external root resorption during orthodontic treatment. Secondarily, a case with extensive root resorption due to ectopic canine eruption will be presented. Minor root resorption during orthodontic treatment is a common finding. Orthodontic movement demands bone remodeling which is caused by the act of cementoblasts/odontoblasts derived from periodontal ligament mesenchymal stem cells. Interaction between orthodontically induced forces and periodontal ligament, results in an inflammatory reaction known as external root resorption. Diagnosis is mainly done with the use of periapical x-rays. Some of the factors that are supposed to increase the chances of root resumption are the extended treatment time, the presence of extractions in the treatment plan and the dental type. Patients that are subjected to elongated orthodontic tooth movement, present with increased chances of extended root resorption, which corresponds with research results showing that after 36 months of orthodontic treatment 70% of the patients reveal indication of root resorption. In addition, need of extractions involves greater orthodontic treatment and thus, greater degree of resorption. Maxillary central and lateral incisors are the teeth with the greater degree of root resorption, arguably due to their root morphology. To conclude, during the recent years the amount of research seeking the etiology of external root resorption has increased, aiming in prevention and reduction of the above effect, during orthodontic treatment.

Treatment of patients that present with severe facial skeletal problems and achieved craniofacial growth, can be accomplished by surgical displacement of the maxilla, the mandible or combination of both. Despite the fact that skeletal displacement can treat dental abnormalities, it may have a positive or negative impact on facial harmony, concerning lateral or/and frontal aspect.
Digital cephalometric predictions of the soft tissue adaption to skeletal displacements have enhanced the ability of the orthodontist to pre-surgically assess the impact of skeletal movements on facial aesthetics. The use of Visual Treatment Objectives (VTOs) constitutes a helpful tool in surgical planning, in patient–doctor interaction, in understanding treatment goals and contributes to the patient’s final decision.
There are, however, some factors that can affect the accuracy of the above measurements. Inaccurate predictions can be directly associated with the method technique or can be due to relapse, inaccurate tracing of the center of rotation of the mandible or to personal peculiarities. Other factors can be the sex, the race, the presurgical thickness of the soft tissues and the mean values of the measurements that exist in the data base concerning the automatic adjustment of the soft tissue to skeletal movements.
Besides a report in accuracy of cephalometric soft tissue prediction, the aim of this presentation is to apply the Viewbox 4 Software (dHAL Softwear, Kifisia, Athens, Greece) in treatment goals prediction of an orthognathic case with Class III malocclusion and to compare pre-surgical digital VTOs with the final postsurgical results.

Vassilis Varvaresos is a graduate of Kalamari High School, Thessaloniki 2001.
Just 14 years old and already a winner of the coveted first prize at the YCA International Auditions in 1998, he was enthusiastically discussed during his first appearances in New York and Washington. Since its debut in America at the age of just 15, it has appeared in almost all US states. His most notable appearances include recitals at Carnegie's Weill Hall, the New York's Morgan Library, the Isabella Gardner Museum in Boston, the Kimmel Center in Philadelphia and the Kennedy Center in Washington. After appearing at Carnegie's Zankel Hall, Varvaresos received a special invitation from Barack Obama and appeared at the White House.
Varvaresos represented Greece at the 2008 Olympics in Beijing and has repeatedly appeared as a soloist in all the major scenes in his hometown. He has won both the George Enescu International Piano Competition in Bucharest in September 2014 and the Virtuoso Pianists Competition in Monte Carlo in September 2015.
A chamber musician, he has been invited to perform, among others, at the Bozar Theater in Brussels, the Concertgebouw in Amsterdam, the Hague Diligentia Theater and the Gasteig in Munich. He has collaborated with leading French musicians such as Michel Dalberto, Henri Demarquette, Ofelie Galliard and Nicolas Dautricourt, as well as with Noé Inui, Ella van Poucke, Anastasia Kobekina, and Michael Gutmann. He has collaborated with leading Greek musicians such as George Demertzis, Angelos Liakakis, Simos Papanas, Andreas Papanikolaou and Dimitris Tiliakos. He is a co-founder of the Duo Inui-Varvaresos and the Trio Bell'Arte.
He has composed music for film and television series, and was the author of the book Departure From the Functionality of Syntax, which won the Juilliard School Award for School Excellence.
Vassilis Varvaresos's 2018-2019 artistic season includes major appearances at international festivals such as the Athens Festival, Festival des Arcs, Festival de Piano a Porrentruy, Festival di Pietrasanta and Festival de Crans-Montana. He collaborates with the ERT Orchestra in Herodion performing the 2nd Concerto for Piano by S. Prokofiev, with ELSON performing the 2nd Concerto for Piano by F. Chopin and with the Basel Philharmonic Orchestra performing the 3rd Concerto for Piano by N. Skalkotas. He collaborates with Giorgos Demertzis with the Philarmonia Orchestra under Byron Fidetzis on the recording of the newly-created N. Scalkottas's Violin and Piano Concerto for BIS, while presenting the Pilgrimage Years at a concert-marathon at the Athens Concert Hall. His new album "V for Valse" featured with Aparte Records has received 5 stars from Le Figaro, while his solo recital at Salle Gaveau in May 2018 was presented as a "concert of the month" by the same newspaper.
Previous seasons he has appeared among others: Sommets Musicaux de Gstaad, Enescu Festival, Festival des Arcs, the Festival des Musicales du Golfe, the SenLiszt Festival of the Gyorgy Cziffra Foundation. During his performances, he presented works such as the Chopin No 2 piano concert with the Normandy Orchestra, the Tchaikovsky No 1 piano concert with the Freiburg Symphony Orchestra, and the Beethoven Symphony No 4 with Beethoven Orchestra of Thessaloniki.
Varvaresos holds a Bachelor, Masters and Doctoral Degree in Juilliard School. He recently obtained the distinguished Diplôme d'Artiste-Interpète degree from the Conservatoire Nationale et Supérieur de Musique et de Danse in Paris, taught by Michel Dalberto.
He has recorded with NAVIS CLASSICS, Aparte Records and BIS.

The Congress can be attended by all orthodontists, dentists and students. Participation costs include: Conference attendance, exhibition visit, conference material, coffee and lunch breaks, and certificate of attendance.

The 22nd Greek National Congress of the Greek Orthodontic Society and the Orthodontic Society of Northern Greece will take place on Saturday and Sunday, 7-8 December 2019.
The pre-congress course will take place on Friday, 6 December 2019.

The 22nd Greek National Congress of the Greek Orthodontic Society and the Orthodontic Society of Northern Greece will take place on 6-8 December 2019, at the hotel “Makedonia Palace” in Thessaloniki, Greece (Tel.: +302310897197, E-mail: info@makedoniapalace.gr, Web: www.makedoniapalace.com, 2 M. Alexandrou Av., 54640, Thessaloniki, Greece)

The discounted registration fee is extended until 8/11.

• This Congress is open to all orthodontists, general practitioners and pre- and post-graduate students.
• The registration fee includes participation to the scientific program and commercial exhibition, as well as coffee breaks and lunches.

 

CONGRESS FEES

Registration until 31.10.2019 08.11.2019
	Pre-congress course	Congress	Congress & course
Members*	100 €	110 €	190 €
Non-members	130 €	140 €	240 €
Students**	50 €	60 €	90 €

Registration after 01.11.2019 09.11.2019
	Pre-congress course	Congress	Congress & course
Members*	150 €	180 €	280 €
Non-members	170 €	200 €	320 €
Students**	70 €	90 €	140 €

 *Members of the Greek Orthodontic Society, Orthodontic Society of Northern Greece, Hellenic Professional Union of Orthodontists or Balkan Association of Orthodontic Specialists
**Students have to provide proof of their student status

 

PAYMENT
To register please make a bank transfer of the corresponding fees to:
Bank of Piraeus, IBAN: GR93 0172 2270 0052 2706 3519 751, BIC: PIRBGRAA,
including your name in the "Information for Beneficiary" field. Then, send a copy of the transaction document along with this registration form to the secretary of the Orthodontic Society of Northern Greece by fax at: +30-2310-999549 or by e-mail at the address: info@orthoebe.gr 

You can find the Abstract Submission Form here.

Instructions for Submission procedure:
1. Tick above the appropriate box for the type of your presentation.
2. Indicate the presenting author with bold and underlined letters (no more than 3 presentations as presenting author are allowed).
3. Abstract font: Calibri, No 10.
4. Abstract Title: 15 words or less.
5. Abstract Main Body: 250 words or less.
6. Save the completed Abstract Submission Form to your computer.
7. Send via e-mail the file at info@orthoebe.gr by September 30, 2019.
8. Notification of acceptance: October 15, 2019.
9. After acceptance: registration of at least one author of accepted poster/oral presentations by October 31, 2019, in order for the presentation to be included in the Main Program.

Instructions for Oral Presentations after acceptance:
1. The maximum time for each accepted Oral Presentation will be 10 min.
2. All participants should submit their presentations to the I.T. Congress Desk at least 1 hour before the start of the session in which they participate.

Instructions for e-Posters after acceptance:
1. Accepted e-Posters should be prepared in one PowerPoint slide of 16:9 mm and should be sent as high-resolution PDF files to the Congress Secretariat at info@orthoebe.gr, by November 15, 2019.

• The official languages during the congress on Saturday and Sunday, 7-8 December 2019, will be Greek and English with simultaneous translation.
• During the pre-congress course, on Friday, 6 December 2019, the official language will be English without simultaneous translation into Greek.

Participants who register at the 22nd Greek National Congress will receive from the secretariat of the conference a bag with printed material, the congress program, as well as an identification badge. All participants are required to wear their name badges during all congress activities.

A commercial exhibition of orthodontic materials, products and equipment will take place in the hotel “Makedonia Palace” during the congress.

The organizing committee reserved a number of rooms at the hotel “Makedonia Palace” with special rates (according to availability) for the participants of the 22nd National Greek Congress.
To book your hotel room please contact “Makedonia Palace” hotel directly at:
Tel.: +30 2310897197, E-mail: reservations@makedoniapalace.gr Web: www.makedoniapalace.com 

Throughout the congress there will be a possibility of parking in the hotel parking with special rates (according to capacity) for the participants of the 22nd National Greek Congress.

All participants will receive a certificate of attendance at the end of the conference, when they will be asked to complete the 22nd Greek National Congress evaluation form.

The 22nd National Congress participants will be awarded with credit points based on the Continuous Professional Dentist Training system of the Hellenic Dental Association.

During the conference there will be official photo coverage and filming of the conference.
Photographing, filming and recording of lectures and poster presentations are not allowed.

30 September 2019: Final date for submission of abstracts
15 October 2019: Final date for acceptance of abstracts
31 October 2019: Final date for early bird discounts on registration fees

ALYADENTAL IKE
Medical Materials
Agg. Bobou 2, 21200 Argos, Greece
Tel.: +30 6944064646 / +30 6984260000
Web: www.alyadental.com
E-mail: info@alyadental.com 

AMERICAN ORTHODONTICS - Μ & Π ΟΙΚΟΝΟΜΙΔΟΥ ΑΣΚΛΗΠΙΟΣ Ι.Κ.Ε.
Leoforos Nikis 1, 54624 Thessaloniki
Tel.: 2310 256697/ Fax: 2310 256697
E-mail: americanortho.gr@gmail.com 

APOSTOLIDES 
Nest. Telloglou 11, Thessaloniki
Tel.: +30 2310 201301
E-mail: info@apostolides.gr 
Web: https://www.apostolides.gr 

ARISTON DENTAL

Efi Tolia
Mesogion Av. 467
PC GR15343, Agia Paraskevi
Tel.: +302108030341
E-mail: marketing.tolia@aristondental.com 
Web: www.aristondental.com 

DENTALCOM - Papazoglou G. S.A.
24 Kariofilli Street, 11527 Athens
Tel.: +30210 7775021 – +30210 7775110 – +30210 7775929 / Fax: +30210 7770480
E-mail: sales@dentalcom.gr 
Web.: www.dentalcom.gr 

DENTAL LINK ΕΠΕ
Menandrou 58, PC 10432, ATHENS
Tel.: +30 2105242955
Web: https://www.dentallink.gr 

INVISALIGN – ITERO
Laertou 22, 55535, Thessaloniki
Tel.: 2314 312147 & 2313 051505
E-mail: pperros@aligntech.com
Web: www.orthotech.gr
www.invisalign.gr

Ioannis Tsaprazis S.A.
157 Michalakopoulou Street, 11527 Goudi
Tel.: +30210 7716416 – +30210 7751000 / Fax: +30210 7711100
E-mail: info@tsaprazis.gr
Web: www.tsaprazis.gr

MEMODENT S.A.
Veranzerou 4, PC 10677, Athens
Tel.: +30 210 3304050 / Fax: +30 210 3819807
E-mail: dental@memodent.gr 
Web: http://www.memodent.gr 

Miltiadis Vitsaropoulos S.A.
348 Mesogion Ave 348, 15341 Agia Paraskevi
Tel.: +30210 6541340/ Fax: +30210 6541618
e-mail: info@vitsaropoulos.gr 
Web.: www.vitsaropoulos.gr 

NEWDENT I.K.E.
Panagiotis Andreou
Navarchou Kountouriotou 3
PC GR 54625, Thessaloniki
Tel.: +302310270550
Fax: +302310270850
E-mail: info@newdent.gr
Web: www.newdent.gr 

ORTHO CENTER - Eleotriviari Koula & Co.
21-23 Apostoli Street, 34100 Chalkida
Tel.: +3022210 20410/ Fax: +22210
E-mail: info@ortho-center.gr 
Web: www.ortho-center.gr 

ORTHO-EXPERT - I. MALOUTA & CO
Ilias 12, PC GR26225, Patra, Greece
Tel./Fax: +302610240609
E-mail: orho-expert@hotmail.com
Web: www.ortho-expert.gr 

ORTHOSMILE - Grigoriou M. & Co.
(LEONE, DENTALLINE, DB ORTHODONTICS)
79 Leoforos Marathona, 14569 Anixi
Tel.: +30210 8145775 +30210 6748283 / Fax: +30210 8145776
E-mail: ortho-smile@live.com

ROYAL ORTHODONTICS – BRITTA SCHOFFEL & Co. L.P.
18 Olympionikon Street, 19009 Pikermi
Τel.: +30210 9958506/ Fax: +30210 6043457
Ε-mail: info@orthoshop.gr 
Web: www.orthoshop.gr 

UNIDENT Konstantinos Tzivelekas Single-member Ltd.
40 Grammou Street, 15235 Vrilissia
Tel.: +30210 6858070/ Fax: +30210 6858099
E-mail: info@ktzivelekas.gr 
Web: www.ktzivelekas.gr 

UNISHAPE - Konstantinos Antoniou
Monastiriou 183, PC GR 54627, Thessaloniki
Tel./Fax: +302310542917
E-mail: info@unishape.gr
Web: www.unishape.gr 

Maria Tsolaki
Dental Lab Technician
40 Mitropoleos Street, 54623 Thessaloniki
Tel.: +302310 233675
E-mail: ormtsolaki@yahoo.gr

METAXA Bros
Dental Lab
E. Aminis 25, PC GR54621, Thessaloniki
E-mail: metaxasortho@gmail.com
Web: www.metaxasortho.com 

VETTOS ORTHOLAB
Sonierou 17
Tel.: 2105230152 / Fax: 2105236888
E-mail: info@ortolab.gr
Web: www.ortholab.gr