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Nationality：United StatesLecture :
The State of Our Art and Science as a Guide to PracticeCV or Autobiography :Rolf G. Behrents received a B.A. from St. Olaf College, his dental training at Meharry Medical College, and his orthodontic training and Master of Science degree from Case Western Reserve University. He received a Ph.D. degree from the University of Michigan for work conducted at the Center for Human Growth and Development. In 2001, he was awarded an honorary degree (Doctor Honoris Causa) by the University of Athens in Greece. In 2007 he received the Blair Distinguished Service Award from the AAOF, received the Jarabak International Teacher Award in 2011, and will receive the Albert Ketcham Award from the American Board of Orthodontics in 2020. He has received several awards for his research, has authored and co-authored numerous articles pertaining to clinical orthodontics and facial growth, and has lectured extensively across the country and abroad. He has served on the faculty at Case Western Reserve University, The University of Tennessee, and Baylor College of Dentistry. He served as the Executive Director of the Center for Advanced Dental Education from 2003-2011. Until his recent retirement in 2018, he was the Lysle E. Johnston, Jr Professor of Orthodontics and Director of the Orthodontic Program at the Center for Advanced Dental Education of Saint Louis University.
Presently he teaches at SLU on a part-time basis as a Clinical Professor and holds the rank of Professor Emeritus. He continues to serve as a Research Associate at the Bolton-Brush Growth Study Center of Case Western Reserve University in Cleveland and since 1999 he has served as Co-Director of the Graduate Orthodontic Residents Program (GORP). His is the present Editor-in-Chief of the American Journal of Orthodontics and Dentofacial Orthopedics (since 2014).
While the underpinnings of science involves the orderly search for, and discovery of truth, the conduct of practice is not so simply conceived and structured. Practitioners must decide what to do when confronted by a patient and the patient's condition; they cannot necessarily wait until all that should be known is known. As a result practice is admitted to be some blend of art and science. Unfortunately there exists good and bad science as well as good and bad art. This presentation will look at the qualities of our science and technology, and the quality of our literature. By doing so, it is hoped that unsafe, unfounded, and poor quality materials and techniques are appreciated for what they are.VIEW MORE
Nationality：United StatesLecture :
What Imaging and Jaw Tracking has Taught us About TMJ ProblemsCV or Autobiography :Professor Chung H. Kau is Chairman and Professor at the Department of Orthodontics, University of Alabama at Birmingham. He is a Diplomate of the American Board of Orthodontics and enjoys practicing clinical orthodontics. He is a researcher with a keen interest in three-dimensional and translational research. At present he is Principal Investigator on a number of grants and has a research involvement in excess of US$4+ million dollars. He actively contributes and publishes in the orthodontic literature and has over 300 peer-reviewed publications, conference papers and lectures. He was also made the King James IV Professor by the Royal College of Surgeons in Edinburgh in 2011. He is Director of the Craniofacial Disorders Orthodontia Clinic and a Clinical Professor of the Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center Houston. In 2018, he was made visiting Professor at the University of Szeged and University of Debrecen in Hungary.
This lecture will discuss the latest imaging technologies as it relates to TMJ issues. The lecture will discuss how MRI technology is used in the early diagnosis of children with Idiopathic Juvenile Arthritis and how the technology helps to administer early treatment. We will also discuss CBCT technology in the management of the TMJ in a variety of circumstances. Finally, the lecture will discuss the latest in jaw tracking as it relates to splint fabrication and evaluation of post-operative orthognathic surgery.VIEW MORE
Nationality：United StatesLecture :
Changing Modes of Decision-makingCV or Autobiography :Moore/Riedel Professor, Department of OrthodonticsUniversity of Washington, Seattle, WA (1971 - 2019)Former member of the WFO Executive Committee (2010-2015)Editor, The Angle Orthodontist (1988 – 1999)Editor-in-Chief, AJO-DO (2000 – 2011)Editor Emeritus, AJO-DO (2011 – present)Dr. David L Turpin is a graduate of the University of Washington and maintained a private practice for 38 years. During the last several years he served as an affiliate professor at the University where he was named the Moore / Riedel Professor. Dr. Turpin was editor of the PCSO Bulletin for 10 years, The Angle Orthodontist for 11 years and more recently served as the Editor-in-Chief of the American Journal of Orthodontics & Dentofacial Orthopedics from 2000-11. He was named Editor-emeritus of the AJO-DO in 2011 and followed that as Interim Editor-in-Chief with the loss of Dr. Vince Kokich. Dr. Turpin then served on the Executive Committee of the World Federation of Orthodontics (WFO) 2010 - 2015. He has been honored with the Milo Hellman Research Award, the Dale B Wade Award of Excellence in Orthodontics and the James E Brophy AAO Distinguished Service Award. He received the 2011 Lifetime Achievement Award by the Pacific Coast Society of Orthodontists and received the Albert A Ketcham Award from the American Board of Orthodontics in 2015.
One hundred years ago Edward H Angle was a major influence in a new specialty as it struggled to find a place in the healthcare profession. He found a supportive environment in what has been called the "Era of the Expert." Fifty years later as the specialty of orthodontics became well established, research findings were more likely to be supported by our educational institutions -- often called the "Scientific Era." Now, 60 years has passed and the basis of our specialty is changing again, -- this time it is based on a study of treatment outcomes, as the evidence becomes king. What role in this process is played by our publications.VIEW MORE
Nationality：United StatesLecture :
Machine Learning with Integrated Orthodontic Systems- A Future DirectionCV or Autobiography :
Nationality：United Kingdom (Great Britain)Lecture :
Demineralised Lesions During Orthodontic Treatment: Evidence-based PreventionCV or Autobiography :Philip Benson is Professor of Orthodontics and Honorary Consultant at the School of Clinical Dentistry, Sheffield. After completing his orthodontic specialty training at Manchester in 1994, Professor Benson moved to the University of Liverpool, where he completed a PhD in the Cariology Research Unit, under the supervision of Professors Sue Higham and Neil Pender. In 2000 Dr Benson became Senior Lecturer in Orthodontics at the University of Sheffield School of Clinical Dentistry, being promoted to Reader in 2008 and to a personal chair in 2014. His primary research interest is investigating the effectiveness of contemporary orthodontic techniques and practice. He is the principal or co-author on five systematic reviews published in the Cochrane Library and he has planned, coordinated and completed several randomised controlled clinical trials. He is also interested in oral health-related quality of life and the development of patient reported outcomes (PROs) to measure the impact of malocclusion and orthodontic treatment on young peoples’ everyday lives.
The development of demineralised lesions (DLs) is a relatively common adverse effect of fixed orthodontic treatment, but they can be prevented. This talk will describe the speaker’s own journey in the area of investigating the use of fluoridated products to prevent DLs in patients with fixed orthodontic appliances, from junior researcher in a cariology research unit, to first author of a Cochrane systematic review and Chief Investigator of a multi-centre randomised control trial. He will describe his own experiences as an active researcher and clinician, outlining what he considers to be the true incidence of the problem, as well as an evidence-based approach to preventing new DLs in orthodontic patients. In keeping with the theme of the meeting he will indicate potential future innovations in this area.VIEW MORE
Nationality：United Kingdom (Great Britain)Lecture :
Everyday Orthodontics and New Innovations. The good, the Bad and Medico-legal ProblemsCV or Autobiography :Professor Derrick Willmot
BDS PhD LDS FDS MOrth DDO FHEA
Professor Willmot is Emeritus Professor at the University of Sheffield, United Kingdom
He qualified at University College, London in 1969 and in 1984 he was appointed Consultant Orthodontist in Sheffield. He was subsequently appointed to a personal chair in Orthodontics at the School of Clinical Dentistry of the University of Sheffield and became head of the department of Growth and Development of the University and Clinical Dean of the dental school. He was Clinical Director of the Charles Clifford Dental Hospital for 5 years from 1995 to 2000. He was president of the South Yorkshire Branch of the British Dental Association in 1992 and he was awarded the John Tomes medal of the Association in 2011. He has been Chairman of many educational committees and served on the Council of the British Orthodontic Society for many years. He was awarded the Special Service award of the British Orthodontic Society. He taught Orthodontics, Facial Growth and Development and Paediatric Dentistry and examined the whole range of Dentistry. He was Dean of the Faculty of Dental Surgery at the Royal College of Surgeons from 2008 to 2011 having served on the Faculty Board of Dental Surgery from 2002 as a Board member. He was a full member of the Council of The Royal College of Surgeons from 2007 to 2011.
He was awarded his PhD in 2000 for research work on the Image Analysis of enamel demineralisation. He has published widely. He has supervised many postgraduate Masters research projects and he has examined both undergraduate and postgraduate dentists in the UK and overseas at Degree, Masters and PhD levels. He has given presentations on orthodontic matters both in the United Kingdom and in the USA, the Middle East and Malaysia. He has advised on many orthodontic medico legal matters over 20 years. In addition to preparing many expert reports he has appeared as an expert in the Crown Court, the County Courts and at the General Dental Council having been instructed by lawyers acting both for the defendant and prosecution. He has wide medico legal experience and has been a Dental Adviser in Orthodontics to the Medical Protection Society since 1993. He has prepared reports and the associated correspondence for 350 cases relating to orthodontic matters. Fifty percent of his time is spent taking instructions by those acting for the prosecution and fifty percent for those acting for the defence.
Professor Willmot currently also works as a part time specialist orthodontist in the north of England and teaches and lectures on orthodontic matters. His current clinical caseload is mainly adult patients, many with restorative dental problems which he manages jointly with his General Practitioner and specialist colleagues.
Professor Willmot will reflect on the use of a range of conventional and contemporary orthodontic therapies and will demonstrate their use by means of case reports. He will explore some of the new innovations in orthodontics and will examine the extent of medico-legal problems that arise from these treatments, giving examples of some of the recent litigation he has experienced as an expert witness.
Orthodontic diagnosis is vitally important if the orthodontist is to achieve a good outcome and whilst basic examination techniques are still important the use of computer technologies can enable more predictable outcomes, but can lead to medicolegal issues. Plaster cast study models have served the profession for many years as a diagnostic aid but as the orthodontic community is increasingly relying on digital models, which have significant benefits, their inappropriate use has led to successful complaints.
In the UK a failure to take adequate informed consent from the patient at the treatment planning stage, results in many complaints from patients. In particular there is commonly a failure to offer patients a range of options which may include both conventional and innovative treatments. A failure to offer options at the outset can lead to later disappointment on the patient’s behalf.
Removable and functional orthodontic appliances have been used for many years and some still have a place in order to carry out simple tooth movements or manage occlusal discrepancies, often associated with fixed appliances.
Fixed orthodontic appliances are used successfully throughout the world. They achieve high quality outcomes and enable the orthodontist to manage a large range of malocclusions. These appliances can put the patient at risk of enamel demineralisation, orthodontically induced root resorption and exacerbation of periodontal disease. The promotion of cosmetic, short term fixed orthodontics, usually provided by untrained general practitioners using a laboratory made appliance and prescription, has led to increasing litigation from unhappy patients.
Aligner treatments have become a worldwide phenomenon and their use continues to expand. Various aligner techniques from a range of providers enable a wide range of malocclusion to be treated however problems do occur which lead to complaints, and there has been an increase in litigation arising from the use of these appliances in recent years.
Orthodontic relapse continues to remain a problem and long term retention is now nearly universally recommended by orthodontists. Complications do arise with contemporary retention techniques and these can lead to medicolegal problems.VIEW MORE
" The Emperor's New Clothes !"- A reality Check on Aligner Science !"CV or Autobiography :Executive committee member: world federation of orthodontists (2015-20)
President: Asian Pacific Orthodontic Society (2014-16) president: Indian
Orthodontic society (2014-15) editor in chief: APOS trends in orthodontics
(Journal of the Asi9an Pacific Orthodontic Society) member, advisory board: world implant orthodontic association
The lecture is inspired by a popular Danish story where the quest for the latest and best bespoke fashion is busted by a little boy who dares to speak the truth.Contemporary Evidence and Research on the clinical performance / protocols of aligner wear will be deliberated, with data and clinical examples.
Lecture learning objectives are -
1) To understand the efficacy and clinical accuracy of aligners iwith respect to specific tooth movements, for individual teeth.
2) To evaluate the wear protocols optimal for maximum accuracy and subsequent clinical performances.
3) To critically appraise the current evidence for aligner therapy and manufacture from a holistic perspective
4) Assess clinical protocols that work and the ones that are still “work in progress”!VIEW MORE
高橋滋樹 / Shigeki Takahashi
Innovation in the Early Treatment of Skeletal Maxillary Protrusion: Indications for Use of AppliancesCV or Autobiography :ExperiencePart time lecturer of Tokyo medical & dental university 2015 to presentInstructor of The Charles H. Tweed International Foundation 2015 to presentVice president of Alumni association of maxillofacial orthogonathics department /Tokyo medical & dental university 2015 to presentDirector of Japan society of Oral Myofunctional therapy 2012 to presentDirector of Japanese Tweed Orthodontic Association 2008 to presentVice director of Takahashi orthodontic clinic 2002 to 2016EducationReceived Ph.D. in dental science from Tokyo medical & dental university in 1999graduated from Tokyo medical & dental university in 1995Articles・MFT update (in Japanese) Monograph, co-author Ishiyaku-shuppan Co. 2018・Introduction and application of oral myofunctional therapy (in Japanese) Monograph, co-author Dental diamond Co. 2016・To understand MFT easily (in Japanese) Monograph, co-author Wakaba publication Co. 2014・The effect of the position of the mandible relative to cranium and the treatment device in the early treatment of skeletal class II patients. J. Jpn. Assoc. Orthod. Vol.30 No.2 2019 pp29-34・A High Angle Class I Bimaxillary Protrusion Improved by Mandibular Response. Tweed Profile Vol.10 2011 pp.32-36・Changes in Horizontal Jaw Position and Intraoral pressure. The Angle Orthodontist Vol.78 2008 pp.254-261・Modulation of Masticatory Muscle Activity The Angle Orthodontist Vol.75 2004 pp.35-39・Breathing modes, body positions, and supra hyoid muscle activity. Journal of Orthodontics vol.29 2002 pp.307-313・Effect of wearing cervical headgear on tongue pressure. Journal of Orthodontics vol.27 2000 pp.163-167・Effect of changes in the breathing mode and body position on tongue pressure with respiratory-related oscillations. American Journal of Orthodontics and Dentofacial Orthopedics 115 1999 pp.239-246
The early treatment of skeletal maxillary protrusion attempts to utilize skeletal growth to improve skeletal malocclusion prior to the completion of permanent dentition. Proffit claims that functional appliances stimulate and enhance growth of the jaw bone, while headgear suppresses the growth of the maxilla bone.The necessity and effectiveness of early treatment has been frequently debated in Japan since 2013, when the Japan Orthodontic Association published the treatment guidelines for maxillary protrusion, which suggested that early intervention may not be necessary in the treatment of maxillary protrusion.The 2013 guidelines were prepared in accordance with EBM and they are presented objectively, but some of the cited literature arrives at contradictory results. Additionally, the guidelines note that there was not enough evidence included from orthodontic research, which presents a perspective on the treatment of maxillary protrusion that does not necessarily reflect the subjective clinical experience and results of many clinicians.In their defense, the guidelines do suggest future study on the indication of functional appliances. As it has long been argued that functional appliances are indicated in cases of retrognathia, it is also generally perceived that appliance selection in the early treatment of skeletal maxillary protrusion should focus on skeletal problems rather than the occlusal relationship of molars.At this meeting, I will present a brief review of the literature on early treatment of skeletal maxillary protrusion and its clinical effectiveness, and I will also detail an analysis that supports the necessity and effectiveness of early treatment. Additionally, I will show data that will help clarify the indication of functional appliances. My conclusions are based on the results of a clinical survey covering 42 early treatment cases which was completed by members of the Japanese Association of Orthodontists.VIEW MORE
森山 啟司 / Keiji Moriyama
Surgical Orthodontic Treatment for Mandibular Prognathism with Facial AsymmetryCV or Autobiography :Professor Keiji Moriyama graduated from School of Dentistry, Tokyo Medical and Dental University (TMDU), Japan in 1986, and completed PhD degree at TMDU in 1990. He pursued his research in The University of Texas Health Science Center at San Antonio, U.S.A. from 1992-1994. He was appointed as Professor and Chairman, Department of Orthodontics, The University of Tokushima, Japan from 1998 to 2007, then has been serving as Professor and Chairman, Section of Maxillofacial Orthognathics in TMDU from 2007 to present. He served as Dean, Faculty of Dentistry, TMDU from 2014 to 2017.
Professor Moriyama is currently President of the Japanese Orthodontic Society (from March, 2018), and Executive Committee Member of the World Federation of Orthodontists (WFO).
The incidence of facial asymmetry among jaw deformity patients is relatively high. There are wide variations in the facial asymmetry who need orthodontic treatment from cases in which occlusion can be improved by orthodontics alone to cases of severe asymmetry where orthognathic surgery is needed. The difficulties they experience are not only their malocclusion but also oral functions, facial aesthetics, and psychosocial problems. In general, the treatment plan for orthognathic surgery depends on the amount of bone that has to be moved, although the assessment of facial aesthetic changes to be accomplished by surgery mostly depends on the soft tissue changes. It is therefore important to be able to predict precisely the postoperative correlation of hard and soft tissue changes when creating a treatment plan.
In this presentation, three-dimensional changes in hard and soft tissues of facial deformity patients due to surgical orthodontic treatment would be discussed.VIEW MORE
Reconstruction of Canted Occlusal Plane and the introduction of Anka-Jorge PlateCV or Autobiography :Dr. George Anka He entered Northwestern University, Chicago, USA from 1979-1981 for his Orthodontic training, where he received Master of Science Degree 1981 at the same institution. In last 15 years he lecturing intensively in Japan and all over the World in major meetings, wrote and published scientific articles National, International Journal and Text Book. He is maintaining a private practice in Tamashi, Tokyo、Japan. At present he is a Member of Implant Orthodontic Conference Committee of Japan, and serve as the Advisory Committee of the World Implant Orthodontic Association.
The canted occlusal can be observed frequently in clinical orthodontic cases. The aim for a stable case and a controlled TemporoMandibular Diseases after orthodontic treatment by influencing the occlusal plane has been in focus recently. The divine occlusal plane has been thought not to be changed or avoid to change in the past, but with the development of occlusal science and articulation, and together with the ability in controlling the tooth and teeth in 3-dimensional of space, we now know that by changing the occlusal surface and relocate them in the right placement can be benefit to patients better oral health and use. The new buccal plate implant Anka-Jorge Plate will be an additional new armamentarium to tackle the challenge of the reconstruction of occlusal plane in orthodontics. The necessary and the future vision of this new device in expanding our ability in controlling the occlusal plane will be discussed.VIEW MORE
匡佑水谷 / kyosuke Mizutani
Effect of Adhesive Type on Orthodontic Treatment in Direct BondingCV or Autobiography :I graduated from School of Dentistry, Tokyo dental college (TDC), Japan in 2013.
I pursued clinical orthodontics and research in The Nippon Dental University Hospital, Japan from 2014-2018.
I was appointed as assistant professor, Department of Orthodontics, The Nippon Dental University Hospital, Japan from 2018.
I currently also work as a part time specialist orthodontist in the Gifu prefecture, japan and research in Department of Oral Health and Clinical Science, Division of Dysphagia Rehabilitation, Tokyo Dental College.
宮脇 正一 / Shouichi Miyawaki
Importance of Occlusion, Our Clinical Application of Miniscrew and Physiological Significance of Sleep BruxismCV or Autobiography :Shouichi MIYAWAKI, DDS, PhD
Dean, Faculty of Dentistry, Kagoshima University
Professor and Chair, Department of Orthodontics, Kagoshima University Graduate School of Medical and Dental Sciences
Osaka University Graduate School of Dentistry Ph.D. Orthodontics 1994
Osaka University Faculty of Dentistry D.D.S. 1989
Dean, Faculty of Dentistry, Kagoshima University, 2016- present
Vice-Dean, Graduate School of Medical and Dental Sciences, Kagoshima University, 2009-2011, 2014-2016
Assistance Director, Kagoshima University Medical and Dental Hospital, 2009-2011
Professor and chair, Department of Orthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, 2005-present
Associate Professor, Okayama University, 2005
Research fellow, Montreal University, Canada, 2001-2002
Lecturer, Okayama University, 1999-2005
Assistant Professor, Nara Medical University, 1997-1999
Postdoctoral Fellow, Osaka University, 1994-1997
Instructor’s License approved by Japanese Society for Temporomandibular Joint, 2008
TMJ License approved by Japanese Society for Temporomandibular Joint, 2008
Supervisor Instructor’s License approved by the Japanese Orthodontic Society, 2005
Clinical Instructor (Minister of Health, Labour and Welfare), 2003
Instructor’s License approved by the Japanese Orthodontic Society, 2001
Orthodontic license approved by the Japanese Orthodontic Society, 1994
Japanese Dental License (Minister of Health, Labour and Welfare), 1989
Japanese Orthodontic Society (Editor in Chief, 2014-present; Editorial member 2008-present; Secretary on Editorial Board 2000-2001)
Kyushu Orthodontic Society (Vice-president 2017-present; Academic director 2005-present)
Japanese Society of Stomatognathic Function (Editorial member 2006-2014; Director 2006-present)
Japanese Cleft Palate Association (Councilor 2009- present)
Several studies have reported that occlusion influences the general health. Particularly, we suggested a close relationship between occlusion and the upper gastrointestinal tract. In our past studies, we found that patients with skeletal Class III had more gastroesophageal reflux disease (GERD) symptoms than normal subjects, possibly due to low salivation. In addition, we reported that intra-esophageal acid stimulation, which was a model of gastroesophageal reflux (GER), caused more numbers of swallowing and bruxism episodes. Conventionally, bruxism is known to have negative influences on dental and orofacial problems, such as tooth wear and temporomandibular disorders (TMDs). However, recently, an international consensus was reached that bruxism may be a protective reaction that positively affects health. Moreover, since 2003, we demonstrated several evidences that GER-caused bruxism may be a physiological response to protect the esophagus. Here I will introduce the importance of occlusion in maintaining our general health, our clinical application of miniscrew, pathophysiology of bruxism, associated factors and causes of bruxism, a positive influence of sleep bruxism to protect esophagus.VIEW MORE
Aligner Orthodontics for Phase I TreatmentCV or Autobiography :DDS degree - Tokyo Dental College, 1989Residency - University of California, San Francisco, 1990Certificate of Orthodontics - Boston University, 1993MSD degree - Boston University, 1993CURRENT TITLE & CREDENTIALS:Private Practice (SuperSmile International Orthodontic Office) (1994 - present)Instructor, Japanese Academy of Non-Extraction Orthodontics (1994 - present)Fellow, American Association of Orthodontists (1990 - present)Fellow, Japan Orthodontic Society (1989 - present)Fellow, Japan Association of Adult Orthodontics (1994 - present)Clinical Consultant, TP Orthodontics (1994 - 2014)Clinical Consultant, Henry Schein Orthodontics (2014 - present)Clinical Consultant, Align Technology (2015 - present)
It was a dream for orthodontists and patients that aligner treatment can be done during Early mixed dentition. Now the technology is able us to correct those malocclusions with Invisalign First. This presentation discussed about the target of PH I treatment and certain advantages over convention approach and illustrate some of those cases.VIEW MORE
Nationality：Korea (Republic of [South] Korea)Lecture :
total arch intrusion and the symphyseal remodelingCV or Autobiography :Dr. Kee-Joon Lee is professor of the Department of Orthodontics, Yonsei University College of Dentistry, Seoul, Korea. He received DDS and PhD degree from Graduate school, College of Dentistry, Yonsei University. He completed the orthodontics specialty training in Yonsei University. He was a visiting scholar at the Department of Biochemistry, University of Pennsylvania School of Dental Medicine in 2002-2004 and at the Division of Plastic Surgery, the Children’s Hospital of Philadelphia in 2010-2011. He is currently an adjunct professor at the Department of Orthodontics, University of Pennsylvania. He has contributed many book chapters on biomechanics of miniscrew-driven orthodontics, non-extraction treatment in adults, up-to-date lingual orthodontic mechanics and surgery-first approached using TADs. He is the first who demonstrated the miniscrew-assisted rapid palatal expander (MARPE) for adults in AJO-DO, which was cited by many other authors. He has published many articles and case reports regarding the treatment of non-eruption, and total arch movement for hyperdivergent face in orthodontic journals including two cover issues in AJO-DO. His fields in research include clinical biomechanics regarding TADs application and the suture and bone responses to orthodontic stimulus. He has served as a reviewer in major orthodontic journals, including AJO-DO, Angle Orthodontists and European Journal of Orthodontics. He has been invited to many international orthodontic conferences around the world.
Vertical excess of the facial dimension is common and can be expressed in various ways-gummy smile, lip incompetency and/or retrusive mandible. Due to the genetic nature of the vertical growth, however, it has been recognized as very challenging to correct the hyperdivergent face. A latest meta-analysis revealed the lack of clinical evidence in the vertical control using conventional appliances including high pull head gear. In contrast, a reliable dentoalveolar movement using miniscrews is inspiring. Our recent clinical study revealed the possibility of total arch movement depending on the force direction with regard to the com, magnitude and the timing of the force application. the vertical control of the face can be clinically effective. In this session, the biomechanics, clinical effects and stability of vertical control using total arch intrusion will be explained in the aspects of etiology, protocols and stability. Additionally, possibilities of four-dimensional movement for children with hyperdivergent face involving ‘symphyseal remodeling’ will be demonstrated.
1) Esthetic goals – application of soft tissue paradigm
A harmonious perioral muscular function is a determinant for balanced dentofacial growth and development and in particular the perioral region plays an essential role in facial attractiveness. However, previous literature indicated variation in the vertical dimension is hardly noticeable. Moreover, there has been scarce evidence in the true vertical control possibly due to the genetic nature of vertical dimension. In contrast, some soft tissue phenotypes such as lip incompetency and mentalis hyperactivity have been recognized as a significant contributor for facial aberrancy.
To our surprise, our recent study revealed no significant relationship between vertical hard tissue measurements and soft tissue phenotypes. Taken together, it is reasonable to recognize the vertical facial morphology based on soft tissue phenotypes.
2) Biomechanics of labial/lingual total arch intrusion
Biomechanical backgrounds and related strategies using miniscrews are to be explained. Considering the strong genetic nature of the circummaxillar sutures, it is reasonable to conduct major dentoalveolar intrusion rather than supression of sutural growth. The behavior of the whole arch in response to various force vectors will be presented using both experimental and clinical data. The total arch intrusion in both labial and lingual orthodontics will be demonstrated. Depending on the time point when the total arch intrusion was performed, the clinical outcome may vary. Combination of the treatment concepts with or without extraction and understanding on normal growth pattern may lead to significant resultant. In addition, to find the best indication and to anticipate the prognosis, diagnoses have to be made based on the soft tissue paradigm.
3) Biology of symphyseal remodeling
Considering the general rule of the facial esthetics, relative position of the lower incisors is an important determinant. There is a conflict of interest between the facial esthetics and the IMPA angle, which is, normal IMPA would worsen the facial profile in terms of favorable ‘Holdaway ratio’. Therefore a tooth movement inducing ‘sympheseal remodeling’ may be inevitable in many hyperdivergent faces with either Class II or Class III skeletal pattern. The rationale, technical guidelines will be explained as well.VIEW MORE
Nationality：Korea (Republic of [South] Korea)Lecture :
Tooth Bone Borne MSE: Could This be the InfinityCV or Autobiography :Seong-Hun Kim (Sunny), DMD, MSD, PhD is a Professor and Head of the Department of Orthodontics School of Dentistry, Kyung Hee University. He is also a visiting assistant professor of the Division of Orthodontics, Department of Orofacial Sciences at University of California, San Francisco (UCSF), Department of Orthodontics, Saint Louis University, and Visiting Professor and Honorary Head, Department of Orthodontics, National Hospital of Odontology and Stomatology in Hochiminh City Vietnam. Dr. Kim obtained an Orthodontic certificate and MS in Department of Orthodontics, School of Dentistry at the Kyung Hee University, Seoul, Korea, and PhD in Department of Orthodontics, School of Dentistry at the Seoul National University, Seoul, Korea. He was an Assistant professor of the Orthodontics Division at The Catholic University of Korea, Uijongbu St. Mary’s Hospital and Graduate School of Clinical Dental Science. He is currently the Director in the Korean Association of Orthodontists (KAO), Associate Editor in the Korean Journal of Orthodontics (SCIE journal) in Seoul, Korea, Contributing editorial board members of Journal of Clinical Orthodontics (JCO), and also the editorial reviewer board in the American Journal of Orthodontics and Dentofacial Orthopedics, The Angle Orthodontist, Orthodontics and Craniofacial Research, Saudi Medical Journal, International Journal of Oral and Maxillofacial Implants (SCI journal), and Journal of World Federation of Orthodontics. He is a member of World Federation of Orthodontists (WFO) and Korean Society of Speedy Orthodontics (KSSO). One of his research paper "Tooth-borne vs bone-borne rapid maxillary expanders in late adolescence" (Angle Orthod 2015; 85: 253-262) was named as winner of the 2017 Edward H Angle Research Prize as the best paper published in The Angle Orthodontist during 2015-2016 (over 500 published articles). Dr. Kim has lectured and published nationally and internationally on temporary skeletal anchorage devices (mini-implant and miniplate), corticotomy related orthodontics, Young patient treatment, Digital Orthodontics, and Biocreaetive Orthodontics Strategy. He is the author of nine international text books and over 150 international and domestic scientific articles about this topic.
Rapid Maxillary Expansion (RPE) is a cornerstone of orthodontic treatment, established for decades as a useful adjunct. Since the introduction of CBCT, many reports have shown that tooth-borne RPE has the undesired effects, such as loss of buccal bone after the expansion, and significant buccal flaring of the dentition. Bone-borne RPE has been reported, with mixed results; the amount of skeletal expansion and the tipping effects are controversial between bone-borne and tooth-borne RPE. Among these, Micro-Implant Assisted Maxillary Skeletal Expander (MSE), known as a tooth bone borne type hybrid expander, has several advantages. Guide holes in the expander provide beginners the solution on where to place the mini-screws. It is commercialized and easy to obtain ready-made products. And also, the treatment results are fairly consistent. These merits allowed the popularity of the appliance all over the world. Many clinicians favor the MSE because it can overcome the disadvantages; so therefore, there are explosion of clinical studies on this appliance. But, could this hybrid expander empower "Targeted transverse correction in accordance with different type of maxillary deficiency?"
Since January 2004, the speaker has been continuing to apply different types of bone borne expander to clinical practice: Modified Haas Type bone borne expander or Tissue bone borne expander, Biocreative C-Expander (C-Expander). The Haas type expander is bonded with composite to four to six mini-implants. There is no contact with dentition. The device produces very effective skeletal expansion with minor tipping of the maxillary processes, and without additional buccal flaring of the posterior teeth. This essentially eliminates the undesired side effects of tooth-borne RME or hybrid type expander. An additional benefit is that after expansion, the skeletally supported expander can be connected to individual teeth to act as an anchor unit for target tooth movement. This treatment protocol fits the Biocreative Orthodontic Strategy (BOS) precisely.
The speaker compared and analyzed different maxillary expansion appliances on the biomechanical expansion effect, the effect on periodontal tissue, and the relationship between alveolar bone bending and suture opening. Through this presentation, the speaker wants to compare treatment effects and periodontal changes among conventional hyrax expander, palatal side C-expander and Tooth-bone borne type hybrid expander (Miniscrews assisted expander, MSE) with finite element analysis, cone beam CT study and clinical case reports.
Audience members will learn specific clinical tactics and overall treatment protocols using targeted maxillary expansion appliance that will broaden their scope of treatment options like Noah’s Ark in the current orthodontic appliance flood.VIEW MORE
許天民 / Tian-Min Xu
Physiologic Anchorage Control: New Concept and Scientific EvidenceCV or Autobiography :Dr. Xu is a professor of orthodontics at the Peking University School of Stomatology and an adjunct professor of Case Western Reserve University. He received his postgraduate education in orthodontics at Peking University School of Stomatology from 1988 to 1992 and was a Visiting Fellow in Orthodontics at the University of California San Francisco from 1994 to 1996. He serves on OCR and EJO editorial board and AJODO editorial review board. His research interests focus on 4D orthodontics and the investigation of clinical orthodontic outcomes.
Anchorage loss in orthodontic extraction treatment is believed due to reaction of retraction of anterior teeth. However, our prospective randomized clinical trial shows anchorage loss correlated more with patient’s age and sex than with en mass vs. two-step retraction mechanics. And the total amount of anchorage loss is affected by mandible growth. We therefore propose a new concept---physiologic anchorage loss. The influence and pattern of physiologic anchorage loss is discussed and a prevention method is suggested to simplify orthodontic treatment.
周彥恆 / Yan-Heng Zhou
Invisalign Treatment for Skeletal MalocclusionCV or Autobiography :Yanheng Zhou, DDS, PhD, Adv Dip Orth. HKU, the visiting professor at University of Pennsylvania, an adjunct professor of Case Western Reserve University School of Dental Medicine, serves as the professor of the orthodontic department, and Director of Center for Craniofacial Stem Cell Research & Regeneration, Peking University School and Hospital of Stomatology. He is the Immediate-past President of Chinese Orthodontic Society and the vice president of Dental Society in Chinese Association of Plastics and Aesthetics. He is an Executive Committee Member of World Federation of Orthodontists (WFO), president of Asian Pacific Orthodontic Society (APOS), a Member of International Association for Dental Research (IADR), European Orthodontic Society (EOS), and American Association of Orthodontists (AAO).
Skeletal malocclusion is the most difficult case in Orthodontics. Traditionally, those cases are referred to oral surgeons to do Orthognathic surgery. In those cases, most difficult procedure would be the torque control, especially when we use invisalign to treat those cases. The miniscrew could be used combined with the invisalign to treat the skeletal malocclusion. The great result is achieved.
柯雯青 / Wen-Ching Ko
Surgical-Orthodontic Correction in Facial Asymmetry: Clinical Practice and Treatment LimitationCV or Autobiography :1. Professor, Graduate Institute of Craniofacial and Dental Science, Chang Gung University, Taoyuan, Taiwan
2. Attending staff, Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taipei and Taoyuan, Taiwan
3. Editor-in-Chief, Taiwanese Journal of Orthodontics, President, Taiwan Cleft-Palate Craniofacial Association
Facial asymmetry is commonly observed maxillofacial deformity in humans. Perfect facial symmetry is a theoretical concept that is seldom observed in the real world. Severt and Proffit reported that 40% of skeletal Class III malocclusion cases had facial asymmetry and that 85% of these cases had jaw deviation toward the left side. It is a common chief complaint while patients might have other sagittal or vertical jaw imbalance concomitantly. On the other hand, the face asymmetry might be masked by severe facial skeletal imbalance, dental malalignment, and soft tissue compensation or tilting of head posture. The treatment goals of orthognathic correction in face asymmetry should consist of correlated maxillary midline to facial midline, level oral commissures, and symmetric show of bilateral maxillary canines as well as correlated chin point to facial midline. Posteroanterior (PA) cephalograms can be used to evaluate the presence of facial asymmetry. Traditional techniques for planning OGS that entail the use of 2-dimensional (2D) X-ray films such as lateral and PA cephalograms have some limitations including magnification, distortion, and projection. Three-dimensional (3D) imaging techniques have been developed to reduce the errors and overcome the limitations of 2D techniques. During OGS preparation, the accuracy of cephalometric measurements is crucial to evaluate the presence of facial asymmetry, and 3D images can provide accurate and detailed information for evaluating the amount, location and direction of facial asymmetry. The 3D simulation of OGS plan offers a blueprint to ensure a predictable surgical outcome.VIEW MORE
曾于娟 / Yu-Chuan Tseng
Soft Tissue Pprofile, Cheek Line and Lip Appearance Changes Following Mandibular Setback SurgeryCV or Autobiography :Director
Department of orthodontics, Dental clinics, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
In 1996 Dr. Tseng got dental degree from School of Dentistry, Kaohsiung Medical University (KMU). In 1998, she received Master degree and specialist training from Department of Orthodontics, Dental clinics, Kaohsiung Medical University Hospital (KMUH). In 2017, she obtained the PhD degree from School of Dentistry, College of Dental Medicine, Kaohsiung Medical University(KMU).
Dr. Tseng is an associate professor of School of Dentistry, College of Dental Medicine (KMU) and director of Department of orthodontics, Dental clinics (KMUH). She is also an active member of Taiwan Association of Orthodontics and committee member in Taiwan Board of Orthodontists.
Her major research interest relies on subjects of cephalometric analysis, TADs, soft and hard tissue change after orthognathic surgery and CBCT study.
The cheek line (face reading) is a curve-shaped line of soft tissue at the forefront of the cheek bone, and is a crucial landmark in facial esthetics. It is located between the nose and the cheek bone in the lateral view of the human face. To ameliorate the effects of underdevelopment of the midface in skeletal Class III, the maxilla is usually advanced using a Le Fort I advancement osteotomy. We have found clinically that the cheek line is advanced after isolated mandibular setback in the treatment of mandibular prognathism.
The cheilion (Ch; corners of mouth) is another important landmark in facial expressions, particularly during smiling. Chs of mandibular prognathism usually have a wider and more anterior position because of the protruding mandible. Mandibular setback surgery will changes the Ch position.
In this lecture, the following contents will be presented.
1. Cheek line changes following orthognathic surgery.
2. Improvement in lip appearance (lateral and frontal aspects) following mandibular setback surgery.VIEW MORE
黃瓊嬅 / Sabrina, Chiung-Hua Huang
Open Bite Correction - Aligners or Fixed Orthodontics?CV or Autobiography :Big Apple Dental Clinic
1. Certified orthodontist, Taiwan
2. Big Apple Dental Clinic, Tainan, Taiwan
3. Taipei Smile Dental Clinic, Taipei, Taiwan
The surgery-first approach is a new treatment paradigm for the management of dentomaxillofacial deformity. Compared to the conventional approach to orthognathic surgery, "surgery first" protocols could be advantageous in terms of shortened treatment time and immediate esthetic improvement. However, it should not be considered for patients with cleft related deformities, patients with high probability of development of CR-CO discrepancy and unilateral or bilateral cross-bite or scissor bite post-surgery. In this presentation, “surgery first” as well as effective pre-srugical orthodontic decompensation for “surgery early” protocols with meticulous planning and passive self-ligation brackets will be discussed.VIEW MORE
陳式萱 / Stephanie Shih-Hsuan Chen
From Fixed Appliances to Clear Aligners: Embracing the Powerful New ToolCV or Autobiography :1. Board-certified orthodontist in Taiwan2. DDS, China Medical University3. MSD in Orthodontics, National Taiwan University4. Visiting scholar, University of Washington, Department of Orthodontics5. Invisalign Clinical speaker
Clear aligner has been one of the hottest topics in the orthodontic field in the recent years. Are you still watching the trend from a distance and feeling unsure about the new technique?
Clear aligners and fixed appliances, in fact, share the same ultimate treatment goals, functionally and esthetically. However, due to the different approach of force delivery, there are new philosophies behind the design of a clear aligner treatment to achieve the same ideal outcome. Different types of malocclusion treated with clear aligners using the Invisalign system, as well as the proper ClinCheck design to achieve predictable outcomes, will be discussed in this lecture.
Let's step outside the comfort zone, and embrace the powerful new tool.VIEW MORE
陸開盛 / Hoi-Shing Luk
Aligner Therapy- Can it Go Further?CV or Autobiography :1. Provider – Dr. Luk Orthodontic Clinic
2. Chief Technical Officer – Advanced Dental Group
3. Diplomates, American Board of Orthodontists
4. Member, Edwaed H. Angle Society of Orthodontists
5. Taiwan Board of Orthodontics, certified
Invisalign Aligner has been developed about twenty years ago. Throughout these years, the system has many innovations and now it really dominates the orthodontic world.Experience doctors can use the aligner to treat most of the daily cases. In this presentation, we can find many difficult cases could be treated successfully and efficiently, However, further improvement is needed and the speaker will give the idea how the clear aligner can go further and better.VIEW MORE
林政毅 / James, Cheng-Yi Lin
Beyond the Limits of Clear Aligners: Opening the Vertical Dimension in Difficult Interdisciplinary CasesCV or Autobiography :Dr. Lin is Clinical Assistant Professor at the School of Dentistry of the National Defense Medical University of Taipei, Taiwan. Dr. Lin has been an invited speaker at many international and national orthodontic conferences. He has authored numerous articles in refereed journals such as American Journal of Orthodontic and Dentofacial Orthopedics, Journal of Clinical Orthodontics, Compendium of Continuing Education in Dentistry, and Journal of Craniofacial Surgery. He also authored four book chapters regarding TADs-based orthodontics. Dr. Lin has been a reviewer of many international orthodontic journals such as Journal of Clinical Orthodontics and The Angle Orthodontist. Dr Lin’s current research interests include TADs-based orthodontics, Clear aligner treatment for complex cases, overall esthetics-driven interdisciplinary dentofacial treatment (E-IDT), and genetic research of Primary Failure of Eruption (PFE).
Opening of the vertical dimension of occlusion (VDO) is indicated whenever it is necessary to provide room for prosthetic restorations, improve occlusal relationships, and harmonize dentofacial esthetics for interdisciplinary cases.
However, VDO opening is extremely difficult in aligner cases because the initial references of maximum intercuspation and anterior tooth relationships must be reconstructed and adjusted in a new dimension of space as well as large amount of absolute extrusion of posterior teeth is needed… which may go beyond current aligner’s capability.
Additionally, picking a working VDO, communicating with dental team and capturing the optimal VDO intraorally are difficult to achieve in practice. This presentation aims to reduce the confusion over opening vertical dimension and provide some guidelines and solutions to common problems.VIEW MORE
廖炯琳 / Johnny, Joung-Lin Liaw
Innovative Applications of TADsCV or Autobiography :Dr. Johnny Joung Lin, Liaw completed his orthodontic training at NationalTaiwan University Hospital in 1994 and received his master degree in Chang Gung University. He is now in private practice since 2002 after 8-year visiting staff in Shin Kong Memorial Hospital. He keeps on part-time teaching at National Taiwan University . He served as the President o f Taiwan Association of Orthodontists during 2013 & 2014, and Chair of Taiwan Board of Orthodontics during 2015 & 2016. His mai n interest is the pursuit of Orthodontic excellence through interdisciplinary treatment and the use of TADs. He speaks nationally and internationally to share the experience and seeks the next level on Orthodontic excellence.
AbstractInnovative Applications of TADsTADs have been utilized as reliable skeletal anchorage in our daily practice. Various sophisticated applications are demonstrated by many doctors in various situations. Although everyone has his own preferred way to use the TADs, it is still very exciting to see some innovative applications of TADs in difficult situations. The author is interested in exploring the use of TADs for problem-solving to achieve orthodontic excellence.Give me a lever, we shall correct the transpositions. With two lever arms, en-masse retraction with maximal anchorage could be achieved. Expand your mind and stuck on you! Innovative applications of TADs would be discussed and shared with case demonstrations.VIEW MORE
許勝評 / Sam, Sheng-Pin Hsu
The Beauty of 3D Orthodontics -- Less Trouble and More ExcitementCV or Autobiography :1. Assistant Professor, Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital2. Fellowship, Surgical Planning Laboratory, Department of Oral and Maxillofacial Surgery, The Methodist Hospital Research Institute, Houston Texas
Recent years, more and more 3D imaging involves dental and orthodontic treatment. Cone-beam computer tomography (CBCT) with large Field of View (FOV) not only gives more information of teeth but also a better depiction of craniofacial skeleton. Furthermore, Some treatment-related anatomic structure such as airway space can be precisely assessed. Digital dental models obtained with intra-oral scanners can be used for virtual model setup, facilitates diagnosis and adequate treatment plan. 3D facial photos provides a comprehensive soft tissue evaluation. The visual treatment simulation also makes a better patient consultation and communication. In the talk, several orthodontic cases related to TADs/ Impaction Tooth/ Surgery-first approach/ Obstructive Sleep Apnea/ Digital Smile Design will be presented to show the utilization of 3D imaging in daily orthodontic practice. The benefits will also be explained.VIEW MORE
張文忠 / Kelvin,Wen-Chung Chang
Interdisciplinary Treatment in Digital EraCV or Autobiography :1996 DDS degree from School of Dentistry, National Taiwan University, Taipei, Taiwan
2003 Certificate of orthodontic training, orthodontic department of National Taiwan University Hospital
2005 MS degree from Graduate Institute of Clinical Dentistry, National Taiwan University, Taipei, Taiwan
Dr. Kelvin, Wen-Chung Chang is a visiting clinical instructor in the orthodontic department at National Taiwan University Hospital since 2004. He held a private group practice center in Hsinchu, Taiwan in 2007. He is the chairman of the academic committee of Taiwan Association of Orthodontists (2016-2018) and an advisor of the World Implant Orthodontic Association since 2016. His interests focus on self-ligation system, TADs application, interdisciplinary treatment, aesthetic dentistry and digital orthodontics.
In the digital era today, technology continuously changes the way we think and act. The digital world has rapidly improved every industry and profession.
What is “Digital Orthodontics”? It is not just clear aligner treatment or alternatives to plaster models. Digital Orthodontics is here to stay. The digital image, digital intraoral scanning, CAD dental software and 3D printing is transforming the traditional workflows. More and more applications are introduced with enhanced speed, precision, efficiency and lower cost. In this new way to practice, every orthodontist can choose the proper solution to meet their requirements.
We must still remember that digital orthodontics is just a tool. A tool to enhance our treatment quality and patients’ welfare. The key to success is still reliant on the person who makesVIEW MORE
曾應魁 / Ying-Kwei Tseng
Vertical Problem: Anterior Open Bite Innovation & BeyondCV or Autobiography :Graduate in Orthodontic Department, School of Dentistry, Fairleigh Dickinson University, New Jersey, U.S.A. (1) President & Consultant, Taiwan Orthodontic Association (2) President, 3rd Asian-Pacific Orthodontic Conference (3) Examiner, Conjoint Examination for Membership in Orthodontics By the Royal College of Surgeons of Edinburgh (4) International Advisor, Official Journal of the Japanese Orthodontic Society (5) President, of Taiwan International College of Dentists (6) Currently Maintains Private Practice in Orthodontics in Taipei, Taiwan.
Open bite malocclusion is one of the most difficult cases in the orthodontic field. The etiology of open bite is still not clear so far. There are many factors that are considered in clinical orthodontics, including skeletal, dental, hormones and bad habits such as tongue thrust during speaking and swallowing can also cause anterior open bite as well.
One of the most important views plays an important factor is growth and development of the mandible and the maxilla. This factor causes the open bite treatment to be unstable and a chance of relapse.
Over the past decades some mechanical designs like tongue clip, is used in the clinics to prevent tongue thrust during speaking and swallowing. Recently, some mechanical designs, such as mini-implant (mini-screw) as TADs technique, are used to intrude molars to close open-bite cases. But from literatures review, it may only be a temporary solution, because the bite will open again more or less due to the reaction force extrusion of molars sooner or later.
As a professional if the innovation is beneath you, leadership is beyond you. In this lecture, you will learn how open bite treatment is not using mechanical forces only but using innovative geometric morphology concepts also. The key to treat open bite for a more stable and efficient result is craniofacial morphology change. This method brought predictable results and reduced the rate of relapses of open-bite cases.VIEW MORE
鄭信忠 / Johnson, Hsin-Chang Cheng
The Challenges of Orthodontic Treatments on the Congenitally Missing One or Two Lower Incisor CasesCV or Autobiography :1. Dean and Professor, College of Oral Medicine, Taipei Medical University
2. Director, Orthodontic Department, Taipei Medical University Hospital
3. Immediate Past President, Taiwan Association of Orthodontists
Though the prevalence rate of congenital missing on lower incisor(s) is about 0.23-8.6%, the orthodontic treatments on these cases are troublesome and challengeable. The problems faced such as the correlation of congenital lower incisors and malocclusion/ dentofacial morphology, the decision of extraction or nonextraction, the teeth positon and numbers in extraction orthodontic treatment, the discrepancies of teeth size, the establishment of ideal occlusion interdigitation…, etc. This report will present different kinds of orthodontic treatment on these troublesome cases with congenitally missing lower incisor(s). The cohort clinical study was also performed to analyze over 120 orthodontic cases with congenitally missing one or two lower incisor(s). The research results will offer a treatment guideline and principle for these cases.VIEW MORE
Gummy Smile CorrectionCV or Autobiography :1. Dr. Chris Chang is the founder of Beethoven Orthodontic Center and Newton’s A Inc. in Hsinchu, Taiwan.2. He received his PhD in Bone Physiology and Certificate in Orthodontics from Indiana University.3. He is a diplomate of the American Board of Orthodontics and an active member of Angle Society-Midwest.4. Dr. Chang is the publisher of JDO and has authored and co-authored many orthodontic books, including Orthodontics Vols. 1-6, as well as Words of Wisdom, Jobsology and Trumpology.5.He is the inventor of OrthoBoneScrews(OBS®).
The upper whole arch intrusion and retraction by Temporary Anchorage Devices (TADs) has been proved to be an effective way to improve the esthetics of gummy smile. This lecture will present the diagnosis and treatment planning of gummy smile. Detailed mechanics and screw insertiontechniques will be introduced. The rationales for surgical crown lengthening to enhance the anterior esthetics will also be discussed.VIEW MORE
賴向華 / Eddie, Hsiang-Hua Lai
The Role of Orthodontics in Implant DentistryCV or Autobiography :1. Head, Division of Orthodontics, Division of Orthodontics and Dentofacial Orthopedics, National Taiwan University Hospital
2. Vice President, Taiwan Association of Orthodontists
3. DDS, MS, PhD. School of Dentistry, National Taiwan University
4. MOrtho, FDSRCS. Royal College of Surgeons of Edinburgh
Orthodontic treatment of partially edentulous patients is difficult, especially if a significant number of teeth are missing. With loss of teeth, adjacent or opposing teeth usually tip, drift or over-erupt leaving spaces that are not optimal for replacement of missing teeth. Orthodontic correction of these spatial relationships will aid prosthetic replacement of the missing teeth, function, hygiene and aesthetics. Orthodontists rely on teeth to provide the anchorage to correct malocclusions. With patients with an intact dentition dental anchorage is usually adequate to facilitate tooth movement. In some partially edentulous patients however, insufficient anchorage may present to correct the malocclusion. In these patients implants can provide additional anchorage. At times, osseointegrated implants can also be used to support restorations after completion of orthodontic therapy if treatment planning is precise. The use of implants for orthodontic anchorage requires an interdisciplinary approach and precise planning to achieve optimal results.VIEW MORE
高嘉澤 / Chia-Tze Kao
The New Vision of Orthodontics Tooth Movement BiomechanismCV or Autobiography :1. 10th President, Taiwan Association of Orthodontists
2. Past Dean, College of Oral Medicine, Chung Shan Medical University
3. President , Formosa Association for the Promotion of Oral Biotechnology and Medical Devices(TAPO)
4. Vice President of Asia Pacific Dental Federation (APFD)
Orthodontic tooth movement named as biomechnical tooth movement. As one knows that a body even a tooth has a gravity center or center of mass. But, the tooth is within the alveolar bone. Thus, the orthodontic tooth movement is different with the physic body movement. The proportion of the moment to the force is termed the moment-to-force ratio (M/ F). This ratio describes the different types of tooth movement. The aligners treatment are getting more popular in orthodontic therapy. How does aligner can control the tooth with different types of movement are interesting. There are two theories of the aligner tooth movement, that is, by a displacement-driven system, or a force-driven system. How aligner biomechanism is related with the conventional fixed orthodontic biomechanism will be discussed in this lecture.VIEW MORE
劉人文 / Eric, Jein-Wein Liou
Orthodontic Treatment for Facial Asymmetry by Using Yin-Yang Archwire and Bite RaiserCV or Autobiography :Dr. Eric Liou is an associate professor and the chairman of the Faculty of Dentistry, Chang Gung Memorial Hospital & Chang Gung University, Taipei, Taiwan. He is also a visiting professor in the Department of Orthodontics, Showa University, Tokyo, Japan. For the profession affiliations, Dr. Liou is currently president of the Taiwan association of Orthodontists, and president of the World Implant Orthodontic Association. His main research interests are distraction osteogenesis, TADs, orthodontic tooth movement, platelet rich plasma, and bone physiology. Dr. Liou has numerous publications and presentations, specially on the topics of accelerated orthodontic tooth movement, maxillary orthopedic protraction, surgery first accelerated orthognathic surgery, and TADs.
Improvement of an occlusal cant together with lip cant and chin deviation is considered not possible merely through orthodontic treatment. Orthognathic surgery combined with surgical orthodontics, therefore, has been considered as the only treatment modality for improving the occlusal cant, skeletal, and soft tissue asymmetry. For the improvement of an occlusal cant, orthodontic approaches such as the temporary anchorage devices, auxiliary intrusion arches, cantilever-typed springs, high-pull headgear, posterior bite blocks, or active magnetic vertical correctors have been applying nonsurgically. Recently, Yin-Yang wire has been developed for a much more user- and patient-friendly improvement of an occlusal cant. However, the improvement for chin deviation has not been possible merely through orthodontic treatment. The purpose of this presentation is to illustrate a possible new field in orthodontics for a non-invasive improvement of occlusal cant and facial asymmetry through combination applications of Yin-Yang archwire and bite raiser/slope. The development and mechanics of the Yin-Yang archwire, bite raiser, the role of TMJ disc displacement in mandibular asymmetry and how to improve TMJ clicking will be explored.VIEW MORE
林錦榮 / John Jin-Jong Lin
Think twice before you extract: the role of auto tooth transplantation in orthodontics.CV or Autobiography :M.S and Certificate in Orthodontics, Marquette University (USA) (Orthodontic Graduate Program)
2000~2002: President of the Taiwan Association of Orthodontists
2004~present: Clinical Professor, Taipei Medical University (Orthodontic Department)
In orthodontics extraction is a common method to relieve dental crowding or protrusion, even though nowadays due to the use of TADs the extraction rate is much lower than before, extraction is still needed in some occasions.
Extraction of the 3rd molars used to be a routine procedure on the post ortho follow up patients.Unless there are caries , space deficiency, pericoronitis etc ..problems, if the 3 rd molar are well aligned, there is no need to remove it.Especially in the mutilated dentition, by auto tooth transplantation the 3rd molar can replace the poorly prognosis molar .
Not only the 3rd molar, whenever the extraction is indicated, the use of the extraction tooth for auto tooth transplantation should always be considered to avoid the waste of a good tooth.
With the modern CBCT imaging, the 3D print of the donor tooth for auto tooth transplantation is very useful for checking the recipient site, so the PDL of the donor tooth can be preserved well to increase the success rate of transplantation.
Auto tooth transplantation is much better than the dental implant, the former is more economic in price, can grow bone, can be orthodontically moved.
Before routine extraction of tooth, should always think about the possibility of auto tooth transplantation to avoid waste of the good tooth.
In this presentation, plenty of cases will be used to demonstrate the role of orthodontist in auto tooth transplantation.
羅信義 / Hsin-Yi Lo
Canine Transposition and TransmigrationCV or Autobiography :1. Attending staff, Department of Orthodontics, Veterans General Hospital, Taichung, Taiwan2. Supervisor, Taiwanese Journal of Orthodontics
Transposed impacted canine and intraosseous transmigration of the mandibular canine across the mandibular midline are the rare and elusive phenomenon described in the dental literature and our orthodontic daily practice. Tooth transposition and transmigration have esthetic and functional problem. Extraction of the transmigrated canine or let the teeth in the transposed position appear the only best treatment options in some literature review. Nonetheless, in exceptional conditions when other teeth are in normal position and the space for the migrated canine is sufficient, a transplantation procedure is one way of treating such cases. But in some situation, early interceptive intervention can prevent the further migration of canine in the early stage. The mechanisms of orthodontic correction are difficult when we try to correct them into the correct position. So we will discuss the method and complication when we try to correct transposed and transmigrated impacted canine.VIEW MORE