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Brent E. Larson
Nationality：United StatesLecture :
Digital Orthodontics：The Promise and the OutcomeCV or Autobiography :Dr. Larson received his dental degree from the University of Minnesota and his Certificate and Master’s degree in Orthodontics from the University of North Carolina. He spent 3 years as an orthodontist in the U.S. Air Force before joining the staff and faculty at the Mayo Clinic. After a time in private practice, he joined the faculty at the University of Minnesota where he currently serves as Professor and Director of Orthodontics. Recently, Dr. Larson worked with Dr. Proffit on the new edition of Contemporary Orthodontics and he currently serves as the President of the American Association of Orthodontists.
The transformation of the practice of orthodontics from analog to digital over the last two decades has been incredible. Starting with digital photographs and digital radiography, we now collect patient records using direct intraoral scanning and cone beam computed tomography (CBCT). More recently the focus has been on digital treatment planning and treatment simulation with the goal of having technology-assisted treatment. The promise of these technologies is better and more efficient orthodontic treatment.
The focus of this presentation is to present a series of research projects designed to examine the outcomes of treatment provided with technology-aided treatment (Invisalign and Suresmile), and to compare the accuracy of the actual outcomes to the pre-treatment simulation. By understanding this information, the practitioner will be better able to use technology-aided treatment protocols in their practice and know where compensations should be made during planning to maximize the benefit to the patient.VIEW MORE
仲崇禧 / Chun-Hsi Chung
Nationality：United StatesLecture :
Diagnosis and Treatment of Transverse ProblemsCV or Autobiography :Dr. Chung is Chauncey M. F. Egel Endowed Chair and Associate Professor at Department of Orthodontics of University of Pennsylvania. He serves as Director (2010-2018) and President (2017-2018) of the American Board of Orthodontics, and is a member of the Edward H. Angle Society of Orthodontists. Dr. Chung received his BDS in 1981 from National Taiwan University, DMD in 1986 and Orthodontic Certificate/MS in 1992 from University of Pennsylvania. He has numerous articles published in different orthodontic journals, including American Journal of Orthodontics and Dentofacial Orthopedics and Angle Orthodontist. Dr. Chung has been invited to lecture extensively nationally and internationally.
Maxillary transverse deficiency is commonly seen in orthodontic patients. It could be skeletal and/or dental origin, and is often manifested by unilateral or bilateral posterior dental cross bite. However, a patient with maxillary transverse deficiency may also show mandibular transverse deficiency, and there may or may not be cross bite present. Clinically, besides the cross bite, the intermolar width and the buccolingual inclination of maxillary and mandibular posterior teeth (Curve of Wilson) play an important role on the diagnosis of transverse problems. For a growing patient, the facial transverse growth is usually completed before sagittal and vertical growth. To make a proper diagnosis and treatment planning, it is crucial to understand how the maxilla and mandible transverse growth takes place. Nowadays with the advent of cone beam CT, the transverse skeletal width, the buccolingual inclination of posterior teeth and their positions in the basal bone can be easily determined. In this presentation, the normal transverse growth of maxillary and mandibular basal bones and dentitions, the methods of diagnosing transverse problems, and the rationale of treatment will be discussed. In the treatment of transverse problems, a slow or rapid palatal expansion is often used in children. For young adult, the maxilla can still be expanded if TADs are used in conjunction with the palatal expander. Nonetheless, for older adults, the surgically assisted rapid palatal expansion would be needed to treat the narrow maxilla. For the last 30 years at the University of Pennsylvania, extensive clinical studies have been conducted on the effects of rapid palatal expansion on dentofacial structures, which will also be discussed in this presentation.VIEW MORE
Treatment of Hyperdivergent Cl II in Adults and Growing Patients - Vertical ControlCV or Autobiography :Graduated as a dentist in 1995 at the the prestigious School of Dentistry of Piracicaba - UNICAMP, which is acknowledged as one of the best in Brazil and renowned for its excellence at both undergraduate and postgraduate levels in Latin America. She went on to post graduate in the Faculty of Dentistry at the University of São Paulo - FOUSP / FUNDECTO. She has been in private orthodontic practice since then as well as being a course co-ordinator, instructor, and clinical professor for various mini-residency programs in UPS as well as other Universities, including in other countires. After some 10 years in practice, she decided that she wished to treat her son (a braquifacial skeletal Cl III without a face mask) as well as raise the level of excellence of her treatment and enrolled invarious programs around the world in this pursuit. This journey led her to the courses in the USA, Taiwan, Korea, Germany, Colombia as well as the ones conducted by Professors Sadao Sato, Japan, and Rudolf Slavicek, Vienna, both giants in their respective disciplines. She has lectured at the prestigious Vienna School of Interdisciplinary Dentistry (VieSID), Vienna School of Medicine, where she is an instructor. She has also lectured extensively all over the world. In her private practice in Brazil she has become renowned for treating the most difficult of malocclusions and disorders of the Craniomandibular system and is testimony to the dictum that we should be practising as physicians of occlusal medicine of the craniomandibular system. She is proficient in GEAW (Gummetal edgewise archwire) technique which enable her to treat very complex malocclusions, many of which, most would have believed would have required surgery, as well as extra-alveolar TADs and MOPS (micro-osteoperforation) for bone remodeling and modeling.
"Traditional orthodontic treatments do not adequately address the skeletal problems of retrognathic, hyperdivergent adult and growing Class II patients. Class II patients often have retrognathic mandibles and hyperdivergent growth tendencies, which make them among the most difficult to treat orthodontically. The skeletal problems associated with Class II’s are primarily mandibular; the mandible becomes retrusive and hyperdivergent throughout childhood and adolesence. Importantly, Class II patients with hyperdivergent tendencies have additional morphological characteristics, the correction of which make treatment more difficult, including excessive anterior and posterior dentoalveolar heights, open bites, increased lower face heights, steeper mandibular planes, larger gonial angles and gummy smiles. To address the myriad of problems associated with hyperdivergent Class II patients, forward mandibular rotation must be incorporated into any treatment plan attempting to address the skeletal dysmorphology.
Current orthodontic treatment approaches hyperdivergent Class II’s do not control rotation and therefore, cannot adequately address the skeletal dysmorphology. Because vertical control is especially difficult for hypdivergent patients, established treatment mechanics often impede improvements of the profile. The most common orthodontic treatment approaches for hyperdivergent Class II’s produce mainly dental corrections. The most common treatment approaches for such patients (head-gear with extractions, head-gear without extractions, and the Herbst appliance) corrected the Class II malocclusions, but not consistently improve the chin projection or hyperdivergent tendencies. The literature clearly shows that traditional treatment approaches to Class II hyperdivergent patients have little or no effect on the mandible.
This novel approach proposes a full arch intrusion which is effective for addressing the primary skeletal treatment objectives of growing hyperdivergent, retrognathic, patients and correcting existing problems in fully grown patients. Major orthopedic changes are produced, including substantial advancement of the chin and autorotation of the mandible and improved facial profile. Complete correction of existing gummy smile is achieved without the need of any additional surgical intervention for bone recontouring nor crown lengthening, using biological activation with MOPs."VIEW MORE
Nationality：United StatesLecture :
Results from the National Adult Anterior Openbite StudyCV or Autobiography :Dr. Huang earned his dental degree from the University of Florida, and his Certificate in Orthodontics and MSD from the University of Washington. After 10 years of private practice, he began a full-time academic career. He has served as Chair at UW since 2008. Dr. Huang has been involved with many clinical studies, and is a well-known advocate of evidence-based orthodontics. He is a Diplomate of the ABO and an Angle Society member. He has published more than 70 articles, and is the author of two textbooks. He is currently the principal investigator of the National Adult Anterior Openbite Study.
Dr. Huang serves as the Principal Investigator of the ongoing National Dental Practice-Based Research Network Adult Anterior Openbite study, which is being conducted across the entire United States. Currently, more than 300 patients have been enrolled from 91 practitioners, and this prospective study is following patients through the completion of treatment, as well as one year post-treatment. Dr. Huang will describe the current literature on treating adult anterior open bite malocclusions, and then present results from the openbite study. Specifically, Dr. Huang will describe how practitioner and patient characteristics are related to treatment recommendations, as well as acceptance. He will also present preliminary findings regarding treatment outcomes, and will report on the mechanisms of openbite correction with various treatment modalities. There is evidence that the correction of anterior openbites is often not accomplished in the manner that we might expect.VIEW MORE
Nationality：Korea (Republic of [South] Korea)Lecture :
How to Choose Proper Lingual Orthodontic Brackets?CV or Autobiography :Dr. Hee-Moon Kyung is Professor of the Department of Orthodontics at Kyungpook National University in Daegu, Korea. Dr. Kyung is one of the most experienced clinicians in the development and utilization of microimplants in orthodontic treatment worldwide. He has given more than 200 courses throughout world about microimplant anchorage and lingual orthodontic treatment. He is a principle author of the book entitled Microimplants in Orthodontics, a volume that describes in detail the protocols used by Dr. Kyung and his colleagues. He is an active member of Angle Society. He is a president of World Society of Lingual Orthodontics & a president of Korean Association of Orthodontists.
Since Dr. Angle’s contribution to development of orthodontic appliances, there has been much progress in orthodontic treatment using fixed appliance. However, tooth movement speed is substantially the same as compared to that in Angle's days, even though a large amount of biologic researches has investigated the topic over several decades until this time.
As a result, orthodontic patients have to keep their appliances in their mouth over many months, whether they want or not. By the same token, patients needing orthodontic cares are hesitating to start and even give it up because they have to keep their appliances to be seen by others such a long time. Although the esthetics in labial appliance was improved by development of direct bonding system and cosmetic materials, it still has limitations regarding esthetics.
Recently, we have an increasing number of adult patients desiring orthodontic treatment and many of them tend to seek invisible orthodontic appliances. In order to improve the unaesthetic nature of labial appliances, Fujita, Kurz, and other doctors have developed the lingual multi-bracket appliances, and many different kinds of lingual brackets were introduced since then.
Dr. Angle first introduced 2 kinds of orthodontic brackets including vertical slot (ribbonwise) and horizontal slot (edgewise). Nowadays, most of orthodontists tend to use edgewise brackets instead of ribbonwise ones. There are some differences among the design of various lingual brackets compared to labial brackets. So many clinicians, especially beginners, are confused to choose the proper lingual brackets in daily practice.
In this presentation, I am going to share my experiences in dealing with different kinds of lingual brackets and to introduce newly developed lingual brackets as well.VIEW MORE
Surgical Orthodontic Treatment for Class II and Sleep Apnea PatientsCV or Autobiography :Dr. Faber is the editor-in-chief of the Journal of the World Federation of Orthodontists. As a Professor of Evidence Based Dentistry and Orthodontics at the Dental Post-Graduate Program of the University of Brasilia, he uses his editorial background to stimulate keen analysis of the scientific literature. He holds a PhD degree on Biology-Morphology, and a Master degree in Orthodontics, and is a Diplomate of the Brazilian Board of Orthodontics. Dr. Faber has lectured extensively in many countries, and has published over 100 articles in scientific journals. He also maintains a private practice in Brasilia, which is focused on adult patients.
Patients with Obstructive Sleep Apnea Syndrome (OSAS) have an associated risk for cardiovascular events, including arterial hypertension, stroke, and arrhythmias. Besides, clinical manifestations are night snoring, headache when patient wakes up, day-time sleepiness and cognitive performance impairment. There is evidence that maxillomandibular advancement (MMA) is the most successful surgical treatment for OSAS. However, MMA through conventional surgical-orthodontic treatment comprises a pre-surgical orthodontic stage, which might not be adequate unless the patient uses a CPAP. A surgery-first approach eliminates orthodontic preparation for orthognathic surgery. This lecture will cover the diagnosis and MMA treatment planning for OSAS and Class II patients under the light of the 15-year clinical experience with surgery first approach, and will be illustrated with a case series to exemplify and contrast the several pieces of evidence available on the literature.VIEW MORE
Nationality：Korea (Republic of [South] Korea)Lecture :
New Insight on CAD/CAM Based Orthodontic TreatmentCV or Autobiography :Dr. Jung Yul Cha, a graduate of the University of Yonsei, Seoul, Korea received his dental and orthodontic education at Yonsei University. Now he is a professor of Dental College of Yonsei University and was a deputy editor of Korean Journal of Orthodontics from 2014-2017. He worked at the orthodontic department, University of Southern California as a visiting scholar 2004 and also worked at the plastic surgery department, Stanford University as a visiting scholar 2013. His research topic is about the stability of mini-implant and digital dentistry using CAD/CAM technology. He has published many scientific articles related to mini-implants and digital dentistry in international journals.
CAD / CAM technology is known to enhance efficiency and accuracy of orthodontic treatment. In addition, a variety of related software and 3D printers are sufficient to raise interest for orthodontists, but few have yet clarified how to efficiently apply CAD / CAM technology in clinical practice.
Digital models are now used more frequently due to practices implementing intraoral and model scanners, and digital software with computer-driven CAD/CAM systems are readily applied which have been developed for virtual tooth set-ups, fabrication of customized brackets, and miniscrew navigation systems. This new technology aims to overcome individual discrepancies, such as tooth morphology, and skeletal characteristics.
In this presentation, I will introduce a 3D printed guide system to improve the accuracy of bracket placement and miniscrew installation through a goal-oriented treatment plan combined with virtual tooth setup. Then, a case will be shared to show clinical application demonstrating a customized bracket designed to optimize camouflage treatment. Finally, the accuracy of computer-aided, indirect bonding and navigation system will be discussed with examples from scientific studies and clinical data.VIEW MORE
菅原 準二 / Junji Sugawara
The Pros and Cons of Orthodontics-Driven Surgery FirstCV or Autobiography :Dr. Junji Sugawara is currently a Director of the department of IDT (Interdisciplinary Dentofacial Therapy) at the Sendai Aoba Clinic, Sendai, Japan, and a Visiting Clinical Professor at the Division of Orthodontics, School of Dental Medicine, University of Connecticut, Farmington, USA. He graduated from Tohoku University, Sendai, Japan in 1973 and worked there over 30 years. He is an active member of the Edward H. Angle Society (North Atlantic Component) since 2004. The Skeletal Anchorage System (SAS) utilizing the titanium miniplates as temporary anchorage devices and Sendai Surgery First are recent key interests and he has given many lectures on these subjects in the United States, Europe, South America, Australia, Middle East and Asia.
Current Surgery First (SF) approaches can be classified into two rather different styles. One is the Orthodontics-Driven (OD) style. The other is the Surgery-Driven (SD) style. In the OD style, skeletal problems are solved surgically, and dental problems are fixed orthodontically. On the other hand, in the SD approach, the aim is to solve both skeletal and dental problems surgically. The concept of SF that we practice is the OD style. This approach was made possible with the application of TADs which enable the predictable movement of the molars and the entire dentitions. SAS, which utilizes miniplates, is the most reliable modality for the correction of transitional occlusions with complex orthodontic problems. The three most outstanding advantages of the OD style are 1) the much wider range of indications, 2) surgical intervention is mimimized to one jaw surgery in the vast majority of cases, and 3) orthodontic incisor decompensation is relatively simple. The two notable problems with the OD style are the unstable occlusion immediately after jaw surgery and the difficulty experienced by those without skill using TADs in achieving the treatment objectives.
In this presentation, the recent protocol of our SF and its long-term stability will be discussed as well.VIEW MORE
Nationality：Korea (Republic of [South] Korea)Lecture :
Myths, Truths and Advances in Maxillary ExpansionCV 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.
Transverse discrepancy is not easily recognized by the patient and the orthodontic envelope of discrepancy is reportedly narrow in the transverse direction, which is why surgically assisted palatal expansion is recommended for the correction of maxillary transverse deficiencies in grown-up patients. However, in case of transverse deficiencies, the timing and modality for the transverse correction is often questioned. The validity of either surgical or nonsurgical treatment possibilities need to be discussed based on the following aspects.
1. Feasibility: Previous studies suggested that unlike the cranial sutures, true bony union in the facial sutures is rare even during adulthood, which supports the feasibility of nonsurgical maxillary expansion. In contrast, segmental expansion osteotomies caused significant relapse afterwards. Surgically assisted RPE would needs subsequent surgical relocation of jawbone following surgical expansion, which may not be justified in terms of morbidity and convenience. Clinical cases will be shown to demonstrate the diagnosis and treatment of various transverse discrepancies.
2. Tissue response: Our previous study revealed that the tensile stress applied to the suture mesenchyme in the aged group induced active bone formation associated with osteogenic differentiation of suture cells, similar to the young group. Based on this, mesenchymal cells in the facial suture appear to retain remarkable potential for further proliferation and differentiation, implying significant bone formation activity.
3. Limitation: Our latest clinical study reveals that the suture separation in postpubertal and adult patients reached 86%, showing some limitation of the orthopedic effect. A subsequent cadaver study was conducted to propose the key determinants for better success of the transverse correction in adults.
According to the theoretical background and clinical examples, it appears that deficiency in the maxillary posterior region, not necessarily the anterior region necessitates true orthopedic expansion which secures the quality and stability of occlusal outcomes. However, the possibilites and limitations of the correction must be considered as well.VIEW MORE
森山 啟司 / Keiji Moriyama
Early Treatment in Class II Malocclusion - Lessons learned from our clinical experienceCV 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).
尾島 賢治 / Kenji Ojima
Advanced Accelerated Aligner OrthodonticsCV or Autobiography :Education •Studies of Dentistry at the University of Showa (Tokyo-JAPAN). •Postgraduate student in Orthodontics at the University of Showa, department of Orthodontics Professional •Private practice as a specialist in Orthodontics in Tokyo (Shinjuku and Hongo) since 2007 with Dr. Dan, Dr. Kumagai, Dr.Watanabe, Dr.Seko and Dr.Sugawara. •American Academy of Cosmetic Orthodontics Asian Chapter president. •Speaker in Japan, Italy, Germany, Spain, France, Austria, Swiss, Poland, Australia, Iran, Mexico, Brazil, Thailand, Hong Kong,Taiwan, Korea, Indonesia and United States. •President of JAPAN Academy of Aligner Orthodontics. •DSD/Aligner Key Opinion Leader •Advisory Board of Biolux(OrthoPulse).
Due to advance in aligner technology in recent years, options to treat complex cases with aligners have grown. Today it is possible to obtain excellent orthodontic treatment results for many difficult cases using aligners. Just now we have a over 1500 cases invisalign experience among more than 1300 cases Acceleration approach. Furthermore by adding Accelerate Devices as part of the treatment protocol we are able to shorten treatment times significantly.
And Now I will share for how to approach about my Treatment Planning with DSD concept with Aligner Orthodontics.
I will present various cases including Expansion, Extraction, Distilization, Openbite, Deepbite, Interdisciplinary and Surgery First with Aligner cases and explain how we were able to complete these case in a short period of time.
To explore the extent to which we can accelerate Orthodontic tooth movement with Aligners though Accelerate Devices.VIEW MORE
竹元 京人 / Kyoto Takemoto
Lingual Straight Wire Treatment with Square Slot Self Ligation BracketCV or Autobiography :After graduating Tokyo Dental College in 1979, he spent a further two years at Tokyo Medical and Dental University specializing in orthodontics.
In 1983 he opened his first clinic near Tokyo and in 1987 he opened his second clinic in central Tokyo. This was the first exclusively lingual orthodontic clinic in Japan.
Dr. Takemoto is the former president of the World Society of Lingual Orthodontics and is a member of the European Board of Orthodontics and the World Board of Lingual Orthodontics. He has written extensively on lingual orthodontics and, in collaboration with Dr. Giussepe Scuzzo, developed the STb lingual bracket and ALIAS lingual straight wire system.
My aim is to achieve more accurate treatment results using a plain arch-wire. By using a plain arch-wire the wire potential is not affected by bending. For this a very accurate bonding position and a square slot self ligation bracket is essential. Both the bracket slot size and the wire size must be extremely accurate. To achieve this accuracy the ALIAS system was developed. In my clinic we have been using the New Lingual Straight Wire system in all cases since 2006. In 2007 we developed our prototype bracket (STb SL) with square slot which is used with the lingual straight wire system. ALIAS released in 2015, is the next generation of lingual orthodontics.
With ALIAS there are 3 new concepts.
1. Square slot – the square slot gives more control over tooth movement enabling the orthodontist to more accurately predict treatment outcome. Treatment becomes less of an art and more of a science.
2. Straight wire – treatment employs a plain arch-wire. With brackets bonded accurately and a full sized wire the amount of wire bending is very significantly reduced.
3. Passive self-ligation system – employing a passive ligation system reduces friction and light orthodontic force can be employed.
The key areas to which attention must be paid for the best possible treatment using the ALIAS system are:
・Realistic treatment goal using 3D CT imaging. ・Accurate and realistic set up.
・Accurate bonding system and bonding position. ・ALIAS 3 concept accurate appliance.
・Employment of suitable mechanics and orthodontic forces. ・Full size wire control.
At this time, the biomechanics of the new square slot bracket will be described as well as the presentation of a treatment case using these concepts.
窪田 光慶 / Mitsuyoshi Kubota
Orthodontic Treatment with the GUMMETAL Wire and the
Anchor ScrewCV or Autobiography :Graduated from Kanagawa Dental University and earned the PhD with the biochemical study of the substance that activates the human periodontal ligament. Learned the MEAW technique under Prof. Sato and the Austrian occlusion under Prof. Slavicek at Vienna University. Lately conducting the orthodontic treatment using the Gummetal wire with Prof. Hasegawa and managing the Curriculum system for the dental education. Hobby: fly fishing and photography. Live with a wife and a daughter.
A new superelasto-plastic titanium alloy -GUMMETAL- simplify orthodontic procedure
The initial phase of orthodontic treatment has been simplified using NiTi archwires due to the superelastic property and constant lighter forces produced over long range of activation. But in the second or third phase of treatment, using super elastic archwires is difficult because they lack formability. On the other hand, the unique beta-type titanium alloy: Ti-23Nb-0.7Zr-1.20 which have an ultralow elastic module with high strength, one digit higher in elastic deformability. It was developed by Toyota Central R&D, Inc. The Young's modulus of this material is as small as 40 GPa with the 2.5% of elastic deformability to be classified as a super-elasticity, super-plastic nature permitting to 99.9% or more with no workhardening. Furthermore, it has nonlinear and nonhysteresis properties without following Hooke's law. This material was named "GUMMETAL" after its various characteristics unlike other metals. We considered it ideal for applying to the orthodontic wires due to unique characteristics. This material has been formed into various orthodontic wires by Maruemu Works, Rocky Mountain Morita Corp., Japan.
1. The use of GUMMETAL arch wires has significantly simplified and shortened initial levelling and aligning due to the superelasto-plastic property.
2. Ultralow elastic modulus and deformability of GUMMETAL rectangular wires enable application at a very initial stage of orthodontics for three dimensional (torque) control of tooth movement.
3. Superelasticity and non-linear elastic deformation behavior maximize the activation range of wires without excessive force.
4. These characterictics of the material to reduce the number of wire changings and alleviate pain.
This presentation is dedicated to Professor Shin Hasegawa, who passed away on the 24th of May 2018 after two years of fighting his disease. Prof. Hasegawa is renowned for his development of Gunmental wires among others. Referring largely to Prof. Hasegawa’s data, the current presentation is also aimed to highlight his academic and clinical work and re-recognize his great legacy.VIEW MORE
Nikhilesh R Vaid
The Orthodontic BOX OFFICE! Aesthetics Unplugged !CV or Autobiography :Prof Nikhilesh R Vaid is a Professor at the European University,DHCC,Dubai,UAE and maintains an exclusive boutique orthodontic practice in Mumbai,India. He has been the founder editor of the Journal of the Asian Pacific Orthodontic Society, and currently the Editor in Chief. Prof Vaid is a past president of the Indian Orthodontic Society,the Asian Pacific Orthodontic Society and currently serves as an Executive Committee Member of the World Federation of Orthodontists representing Central & East Asia. He has lectured in more than 50 countries around the globe and has published widely.He has been the Guest Editor for the Seminars in Orthodontics, for a record three occasions.His interests include Bollywood flicks,Single Malts and Modern Indian Art.
Aesthetic procedures and protocols have augmented orthodontic finishing protocols since the turn of the century.This has been described as the X factor in orthodontic treatment planning.The presentation will look at ortho-aesthetic clinical procedures and literature with a critical eye.
The three areas of discussion will be
-The Basis for Aesthetic considerations in orthodontics !
-Orthodontic protocols for aesthetic planning & execution.
The presentation will showcase Camara's 6 horizontal smile lines and their interplay in definitive aesthetic orthodontics.
A finishing check-list and its research findings will be explained in detail.
The clinical take home pointers will be :
-Smile Lines -What,When & How ?
-Treatment Planning & Finishing check-list applications
-Validation of the "Smile Line Application" concept
-The X factor in Orthodontic finishing - a "why", "what" and "how" summary !VIEW MORE
Nationality：United StatesLecture :
Can we Accelerate Orthodontic Tooth Movement with Surgical Intervention and Vibration?CV or Autobiography :Dr. Ravindra Nanda is at present UConn Alumni Endowed Chair, and Professor and Head of the Department of Craniofacial Sciences and Chair of division of Orthodontics, University of Connecticut, Farmington, Connecticut, U.S.A.
He received his dental training from Lucknow University, India in 1964. He received his orthodontic training first at Lucknow, India and then from Nymegen, The Netherlands and the University of Connecticut. He also received a Ph.D. for the University of Nymegen in 1969. He was an Assistant Professor of Orthodontics at Loyola University, Illinois from 1970 to 1972 and since 1972 he has been associated with the University of Connecticut.
Dr. Nanda has been author and co-author of five orthodontic books and more than two hundred scientific and clinical articles in major journals. He is Editor-in-Chief of Progress in Orthodontics. He is on the editorial board of ten different national and international orthodontic journals. He is also an associate editor of Journal of Clinical Orthodontics.
He is an active member of various organizations, including the American Association of Orthodontists, European Orthodontic Society and Edward H. Angle Society. Dr. Nanda is a Diplomate of the American Board of Orthodontics. He has given numerous named lectures at national and international societies including Mershon Lecture at American Association of Orthodontics and Sheldon Friel Lecture at 2011 EOS Congress. He has been recognized with various awards from numerous international orthodontic organizations.
Dr.Nanda is a co-editor of a book Retention and Stability. His most recent books are Biomechanics in Clinical Orthodontics , Biomechanic and Esthetic Strategies In Clinical Orthodontics, Temporary Anchorage Devices in Orthodontics and Current Therapy in Orthodontics “Esthetics and Biomechanics in Orthodontics. His new book is titled “ Atlas of Complex Orthodontics”.
Numerous methods and technologies have been proposed and investigated to accelerate orthodontic treatment. Often investigative studies do not corroborate claims of the commercial enterprises. Results of these studies are often conflicting. At our University of Connecticut we have been investigating role of biomechanics, orthodontic wires, TADs, mechanical vibratory devices and role of corticision and piezocision in accelerating orthodontic tooth movement. This presentation will give a comparative evaluation of surgical intervention and effect of vibration to accelerate orthodontic treatment.VIEW MORE
The Role of TADs in Clear Aligner TherapyCV or Autobiography :"Dr Sandra Tai receiver her orthodontic training from the University of Minnesota, and practices as a Specialist in Orthodontics in Vancouver, Canada, where she is a Clinical Assistant Professor at the University of British Columbia. Dr Sandra Tai was Invisalign certified in 2000 and is a Diamond Provider who has treated 1,700+ cases with clear aligners. She is a dynamic, international speaker who lectures globally. Dr Sandra Tai is a member of the Editorial Board of the Journal of Aligner Orthodontics and the author of the textbook “Clear Aligner Technique”.
Recent innovations in technology such as Temporary Anchorage Devices (TAD’s) and Clear Aligners have revolutionized treatment planning possibilities for patients presenting with multiple dental issues requiring complex interdisciplinary treatment. This presentation will discuss integrating TADs with clear aligners to expand the range of malocclusions that may be successfully treated orthodontically. This will be illustrated with clinical scenarios that demonstrate applications of TADs with clear aligners.
Nationality：Korea (Republic of [South] Korea)Lecture :
Strategic Approach to Treat the Open Bite Efficiently and to Retain the Stable ResultCV or Autobiography :Tae-Woo KIM is Professor in Orthodontics, Seoul National University, where he completed his orthodontic specialty training in 1986. He was a visiting professor(1995-7) of University of Washington. He was an editor-in-chief of Korean Journal of Orthodontics(KJO) for many years. He was President of Korean Association of Orthodontists and President of Korean Association of Orthodontists Foundation(2014.4-2016.3). He works as a reviewer of KJO, AJODO and other famous international journals. His focused research fields are TMD, open bite, mini-implants and long-term stability. He was invited as speakers by many orthodontic associations and schools all over the world.
Open bite has been one of interesting fields to me, since I started orthodontic residency in 1983. Anterior open bite is a very challenging malocclusion even for excellent orthodontists. It is very difficult to diagnose differentially and to retain the post-treatment result well, because one case may have several etiologic factors. Since MRI and CT were used to screen the etiologic factors, I have realized once more that ‘open bite’ is one sign of different diseases caused by thumb sucking, tongue thrusting, low tongue posture, mouth breathing, macroglossia, temporomandibular disease and ankyloses of anterior teeth. It cannot be overemphasized to try to find and to remove the causing factors first. According to the causes the open bite should be treated differentially. In this lecture, the following contents will be presented.
1) Etiologic factors of open bite
2) How to find and resolve the etiologic factors
3) Mechanics to close the open bite efficiently
E-handouts are available on the website of AAO.
- 2013 https://www.aaoinfo.org/node/625
- 2014 https://www.aaoinfo.org/node/2382
- 2015 https://www.aaoinfo.org/node/4792
- 2016 https://www.aaoinfo.org/meetings/2016-annual-session#extra_tab_4
小野 卓史 / Takashi Ono
Myths and Facts About the Japanese Ni-Ti ArchwireCV or Autobiography :Takashi Ono is Professor and Chairman of the Department of Orthodontic Science, Graduate School Tokyo Medical and Dental University (TMDU), Tokyo, Japan, and Vice Dean of TMDU Dental Hospital. Prof. Ono works as an Adjunct/Visiting Professor at 3 domestic and 3 international universities. He also serves as an editorial board member for 6 international peer-reviewed journals. He has published 6 book chapters and more than 210 scientific articles. He is currently a member of the Executive Committee of the World Federation of Orthodontists (WFO), and has been appointed as Chairman of the 9th International Orthodontic Congress (IOC) in Yokohama, Japan in 2020.
The prototype of the Japanese Ni-Ti wire, or the improved super-elastic Ni-Ti alloy wire (ISW) was first introduced to the world by a milestone publication in AJODO in 1986 by Professor Miura and colleagues, followed by the two related articles in the United States and the European journals in 1988. Since then, the wire has been renovated and used for more than 30 years in Japan and Asian countries.
There are several characteristics in the ISW. After an extensive analysis with regards to its physical properties, the ISW has been widely used in cases that requires arch expansion, uprighting of the mandibular molars, etc. Moreover, the light continuous force eliminates the invasion to the periodontal tissue and enables to move the teeth efficiently. In addition, we can expect less pain during active treatment with the ISW. Recently, we use it in combination with the temporary anchorage device.
The aim of the lecture is to update our knowledge regarding the ISW by reviewing myths and facts in the treatment of various types of malocclusion, with a special attention to the distalization of the maxillary teeth.VIEW MORE
許天民 / Tian-Min Xu
Class II Correction-Functional Appliance or PASS?CV 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.
Functional appliance was considered to correct Class II by facilitating mandible growth. However, more and more clinical studies found the mandible length could not be increased by any appliance comparing to natural growth sample. And the mechanism of Class II correction by functional appliance is similar to headgear on upper arch. PASS is designed to resist the maxillary dento-alveolar compensation to mandible growth. How this new appliance correct Class II malocclusion will be introduced in this lecture.VIEW MORE
Nationality：United StatesLecture :
Non-surgical Midfacial Expansion with Micro-Implant (MI) Assisted Maxillary Skeletal Expander (MSE)CV or Autobiography :Dr. Won Moon is the Thomas R. Bales Endowed Chair in Orthodontics and serving as the program director for UCLA orthodontic program. He has been a Diplomate of the American Board of Orthodontics since 2002. He completed his dental education at Harvard and orthodontic education at UCLA. His interest in mid-facial expansion began 2003, and he is responsible for developing Maxillary Skeletal Expander (MSE). He has been advocating non-surgical skeletal expansion in both children and adult patients, especially for those who may suffer from airway restrictions. The MSE has been widely accepted internationally, and numerous peer-reviewed publications are available.
The primary aim of this presentation is to illustrate the dental and skeletal effects of maxillary expansion using the conventional rapid palatal expander (RPE), the surgically-assisted rapid palatal expander (SARPE), and the micro-implant assisted maxillary skeletal expander (MSE). Dental expansion, bone bending, and true skeletal expansion will be compared. The adverse clinical consequences of RPE and SARPE in high-angle cases will be explored, and a new approach eliminating these problems by the use of MSE will be presented. Clinical cases involving non-surgical midfacial expansion in both adolescent and adult patients will be examined in detail. Through these clinical examples, a proper MSE fabrication and expansion protocols will be illustrated.
The secondary aim is to demonstrate other advantages of utilizing MSE. Many patients requiring maxillary expansion often have narrow nasal airways, and positive changes in nasal airway with application of MSE are common. Clinical cases illustrating the enlargement of nasal airways after MSE in both adolescent and adult patients will be closely evaluated. With this concept of orthopedic expansion, MSE can aid in orthopedic correction of Class III cases when combined with a face-mask (FM). Clinical cases combining MSE and FM will be discussed in detail, and orthopedic effects will be illustrated. The use of growth modification techniques in conjunction with this new device opens the door to many new possibilities.
Lastly, unknown skeletal impacts will be further explored. Changes in the facial dimension and surrounding structure will be demonstrated through clinical cases. The latest findings from the UCLA research team will be presented in order to enhance depth of understanding in impact of MSE. The newest development in MSE design will be illVIEW MORE
斉宮 康寬 / Yasuhiro Itsuki
TADs：Pearls of Wisdom for Increased PotentialCV or Autobiography :Dr. Itsuki graduated from Faculty of Dentistry, Tohoku University, Japan (D.D.S.) and received degree of PhD from Graduate School of Dentistry, Tsurumi University, Japan. Currently he maintains a private clinic, Jingumae Orthodontics, in Tokyo, Japan. He is Diplomate of Japanese Orthodontic Board and member of Japanese Orthodontic Society, Japanese Society of Oral Implantology, Japanese Cleft Palate Association, Japanese Society of Jaw Deformities, European Orthodontic Society, American Association of Orthodontists and World Federation of Orthodontists.
The palatal implant developed by the speaker has the ability to move teeth 3 dimensionally and predictably. This device has interchangeable upper units to perform a variety of tooth movements. For example, intrusion and extrusion of the molar and anterior teeth, as well as distalization and mesialization can be performed. What is more, midline lateral movement can be achieved and the cant can be improved. With such a wide range of force mechanics available for the first time, new diagnoses and treatment plans are possible.
This presentation will explain them using case reports.VIEW MORE
况守信 / Shou-Hsin Kuang
TADs Assisted Molar Distalization Technique - “RAMDA”CV or Autobiography :In 1985 Dr. Kuang got dental degree from School of Dentistry, National Yang-Ming Medical University. In 1994 he received Master degree and certificate of orthodontics from Department of Dentistry, School of Dentistry, NYMMU. Since 1994, Dr. Kuang directed the Department of Orthodontic at Veterans General Hospital Taipei and also as program director of Orthodontics of Department of Dentistry, NYMMU. Dr. Kuang is an active member of Taiwan Association of orthodontists and he act as board of committee member and examiner of TAO. Now Dr. Kuang has private service in Uncle Kuang Orthodontic Clinic. He also acts as executive director and chairman of publication committee of TAO now.
Molar distalization is an important technique in clinical orthodontic treatment, because the molar back shift can create space, reduce the need for tooth extraction, and then save more healthy teeth. For patients with large space demand, or for patients who are worried about the appearance after tooth extraction, molar distalization plays an important role in their treatments.
In the past, it is necessary to use the extraoral devices such as headgear or J hook to move the molars backward. Such devices will cause great inconvenience to the patients, and therefore need their fully cooperation let those appliances can be effective. Also many doctors had designed intraoral molar distalizing appliances, such as pendulum Appliance, so-called non-compliance appliance.
However, intraoral designed devices, whether fixed or removable devices, the clinical results are often achieved by the anterior teeth forward movement, so that the effect of the molar distalization is very limited.
Since 2000 tads has been applied to orthodontic treatment, then it is possible to use the intraoral device to distalize molars and complete the orthodontic treatment. The "Ramda" as described in this report is “Rapid molar distalizing appliance”; That is, the technique to use of TADs to complete molar distalization. We will explain the design and application of RAMDA and the therapeutic effects with actual cases.VIEW MORE
吳錫堯 / Tony, Hsi-Yao Wu
Atypical Extraction Treatment in Lingual OrthodonticsCV or Autobiography :Dr. Wu started his lingual treatment since 2002, more than half of his orthodontic patients are under lingual treatment now, he was the 8th president of Taiwan Academy of Aesthetic Dentistry, and he is the president of Taiwan Association of Lingual Orthodontists now.
In orthodontic treatment, extraction of premolars is a common treatment option when we need to solve the arch length discrepancy, correct the malocclusion, or improve the profile of the patients.
However, most of the lingual orthodontic patients are adult patients, they usually have some dental problems existed in their mouth, like missing teeth, old canal treatment, old restoration, periodontal problems, and so on.
Sometimes, we have to close the edentulous space with atrophy ridge or extract the teeth with dental problems. It is complicated to deal with the atypical extraction cases especially in lingual orthodontic.
In this presentation, I would like to share my experience and thinking in the biomechanics consideration of asymmetry extraction space closure, the restoration consideration after the orthodontic treatment will be mentioned as well.VIEW MORE
周彥恆 / Yan-Heng Zhou
How Far Can We Go with Invisalign?CV 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).VIEW MORE
林政毅 / James, Cheng-Yi Lin
Esthetic Interdisciplinary Treatment of Short Face Aligner CasesCV or Autobiography :Dr. Lin is a Clinical Assistant Professor at the School of Dentistry at the National Defense Medical University of Taipei, Taiwan. Dr Lin’s main fields of interest focus on 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). Dr. Lin has published many articles in refereed journals such as American Journal of Orthodontic and Dentofacial Orthopedics, Journal of Clinical Orthodontics and Journal of Craniofacial Surgery. Dr. Lin lectures both nationally and internationally. He also authored or co-authored 4 book chapters regarding TADs-based orthodontics.
Clear aligner treatment ( CAT ) of short face patients with complex facial, smile and dental problems is very challenging because etiologies are complicated, and the expected treatment outcome achieved exclusively with aligners sometimes may go far beyond the scope of current clear aligner capabilities. For example, if a short face, deep bite case needs a large amount of absolute extrusionof post. teeth ( more than 1mm ) to open the VDO & increase LAFH, CAT alone may end up with compromised results. That is because absolute extrusion is the least accurate & unpredictable orthodontic tooth movement with CAT.
Therefore, clinicians should realize aligner’s limitations and integrate CAT, braces and various adjunctive treatment, such as periodontal plastic surgery, prosthetic restorations, TADs, dental implants, cosmetic camouflage procedures……in order to deliver the ultimate esthetic treatment results.VIEW MORE
林晉裕 / Chin-Yu Lin
Nationality：United StatesLecture :
A View From the Norms in Early Treatment of Class II MalocclusionCV or Autobiography :Dr. Chin Yu Lin earned his D.D.S degree from the Yang Ming University (Taiwan), his M.S. degree from the National Defense Medical Center (Taiwan), his Ph.D. degree from the University of California at San Francisco, and his orthodontic certificate and M.S.D. degree from the Saint Louis University. Throughout his full-time academic career, he has received the Hatton Award & the Travel Award from the American/International Association for Dental Research, multiple Orthodontics/Teaching Fellowship Awards from the American Association of Orthodontists Foundation, and the Eleanor and Miles Shore 50th Anniversary Fellowship for Scholar in Medicine from the Harvard Medical School.
A proper orthodontic treatment requires a definite diagnosis and treatment plan and a precise execution of treatment plan at the optimal time. A class II malocclusion is defined as a malocclusion associated with a class II molar relationship. As class II malocclusion is multifactorial, more than a hundred combinations of skeletal and dental components can contribute to it. Due to the complex natures of class II malocclusion, it is vital to understand the norms of skeletal and dental components in order to identify and treat the contributing factors of class II malocclusion early, if necessary. Craniofacial growth and development is a dynamic process, especially during the mixed dentition stage. The normal transition of intermaxillary molar relationship from a flush terminal end to Class I requires a coordination of mesial migrations of maxillary and mandibular first molars and skeletal growths of maxilla and mandible. To treat the deviations from these norms in class II malocclusion early in the mixed dentition, it demands considerations in efficacy and efficiency of treatment modalities.VIEW MORE
林錦榮 / John, Jin-Jong Lin
The Latest of Class III TADs Treatment - Simple and Efficient WayCV 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)
The development of TADs, Temporary Anchorage Devices (including mini-plates, and mini-screws) has been applied in orthodontics for almost 2 decades already.
Indeed TADs helped the orthodontic treatment of many difficult Class III cases which were thought to be very difficult or impossible to treat in traditional orthodontics, now become possible to treat.
The author will review most of the popular ways of using TADs to treat Class III to compare the simplicity and efficiency of current TADs on Class III treatment.
The simple and efficient way of using the IZC (Infrazygomatic screw) and buccal shelf screw, including indications, details of screw placement, CBCT analysis of the screw position to avoid screw interference, will be presented with Class III cases treated with these methods.VIEW MORE
張文忠 / Kelvin,Wen-Chung Chang
Digital Orthodontics, Redefined!CV 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
張慧男 / Chris Chang
Innovative Impaction TreatmentCV or Autobiography :1. ABO-Certified Orthodontist
2. Member, Angle Society Midwest Chapter
3. Founder & President, Newton’s A & Beethoven Orthodontic Center, Taiwan
4. Co-author, Orthodontics Vol I-IV
Bio: Dr. Chris Chang received his PhD in bone physiology and Certificate in Orthodontics from Indiana University in 1996 and is a Diplomate of American Board of Orthodontics(ABO) and member of the Angle Society. He has authored numerous journal articles and books, and is internationally recognized for his expertise on non-surgical orthodontic treatment and complex adult treatment combining orthodontics and implant therapy. Besides teaching, he is the inventor of OrthoBoneSrew.
Tooth impaction is a common problem in our clinical practice. Eruption and management of impacted teeth require carefully designed surgical procedures and orthodontic biomechanics. Inspired by the periodontal surgical technique, VISTA, this adapted surgery allows for minimally invasive access to the impacted tooth. Together with simplified mechanics, consisted of TADs and a 3D lever arm, an independent force system from the main archwire, has proven to be an efficient and effective protocol to uncover and upright impactions in challenging scenarios, such as deep horizontal mandibular impaction and beyond.VIEW MORE
許勝評 / Sam, Sheng-Pin Hsu
Digital Surgical-Orthodontics - Better, Safer, Faster, and Easier!CV or Autobiography :Dr. Sam Hsu obtained his undergraduate dental degree at Taipei Medical University in 1999. He then pursued a career of Orthodontics in 2003 after his internship and residency program in General Dentistry. Dr. Sam graduated from Chang-Gung University as a board-certified orthodontist in 2007. He continued to pursue his passion in Craniofacial Orthodontics as a research fellow at the Surgical Planning Laboratory, Department of Oral and Maxillofacial Surgery, the Methodist Hospital Research Institute, Houston, Texas in 2010.
Dr. Sam worked as an assistant professor in the Department of Craniofacial Orthodontics, Chang-Gung Memorial Hospital and maintains his private practice in Trojan Orthodontic Clinic / Esthetic Dent Clinic in Taipei. His research interests include Cleft Lip and Palate, Temporary Anchorage Devices, Digital Orthodontics, and Computer-aided Surgical Simulation. He is the Chairman in Orthodontic Promoted Committee, Taiwan Association of Orthodontists and has accomplished over 160 lectures worldwide.
Digital Orthodontics, including CBCT data / 3D Imaging - Printing / Treatment Simulation / CAD-CAM technology, have extensive development in our daily practice. It also facilitates surgical orthodontic treatment in terms of Surgical Precision, Prevention of Complication, Surgery-first Approach, and Visualization of Treatment Progress / Results. Several cases will be presented to demonstrate in detail the workflow of Digital Surgical-orthodontics and its benefits in this lecture.VIEW MORE
陳彥朋 / Leslie, Yen-Peng Chen
TAD-Reinforced Mechanics for Asymmetrical Extraction PatternCV or Autobiography :Academic affairs of TAO, Vice chairman Taiwan Association of Orthodontist, Specialist National Taiwan University, Master China Medical University, D.D.S
How to make biomechanic design more practical and predictable is one of the challenging part in daily practice. One may have some clue from textbooks/workbooks and articles, but mostly the explanation and experiments are based on "symmetrical" design which is more easier to understanding and learn.
In reality, there are more circumstances that we may extract teeth "asymmetrically" dividing the dentition/arch into asymmetrical parts. That will increase mechanical issues including midline deviation, occlusal cant, differential bowing effect and arch form control...etc.
In this section, the use of mini-screw mechanics would be introduced to minimize these side effects from asymmetrical extraction and reinforce the results of treatment.VIEW MORE
黃瓊嬅 / Sabrina, Chiung-Hua Huang
Open Bite Correction - Aligners or Fixed Orthodontics?CV or Autobiography :Dr. Huang practices in Tainan, Taiwan and has lectured internationally on the Damon® and invisalign® System and advanced mechanics.
She is a certified orthodontist in Taiwan and shares many tips essential for maximizing the potential of the passive self-ligation system as well as clear aligner technique. In private practice she has become known for undertaking difficult and unusual cases-from which she has learned some very advanced ideas and applied them successfully, achieving great finished cases.
There are different concerns of treating Class II and Class III open bite, particularly in the direction of mandibular rotation, as well as to treat with braces or aligners. Even the treatment goal is the same, biomechanics of utilizing braces or aligners are different in certain ways. This presentation will compare two different pairs of Class II and Class III open bite cases, treating with braces and aligners, and discuss about the pros and cons.VIEW MORE
廖炯琳 / Johnny, Joung-Lin Liaw
The Applications of TADs in Challenging MalocclusionsCV or Autobiography :DDS, dental department, National Taiwan University
MS, Graduate Institute of dental and craniofacial science, Chang Gung University
Director, Beauty Forever Orthodontic Clinic
Dr. Johnny Liaw completed his orthodontic training at National Taiwan University Hospital in 1994 and received his master degree in Chang Gung Medical University. He is now in private practice since 2002. He is also a part-time faculty in National Taiwan University Hospital. He served as the President of Taiwan Association of Orthodontists during 2013~2014 and also the chairman of Taiwan Board of Orthodontics during 2015~2016.
Difficult malocclusions are inevitable in every orthodontic practice. The more powerful tool you use, the easier it is when you handle these difficult malocclusions. One of the most challenging malocclusions in the orthodontic practice might be surgical cases asking for nonsurgical treatment. Camouflage treatments without orthognathic surgeries may lead to compromised treatment results. Skeletal anchorage devices can help the anchorage for improved occlusions and facial esthetics under appropriate diagnosis and treatment plan. Another category of challenging malocclusions is impactions and even canine transpositions, which are greatly simplified in mechanics with an improved success rate with the advent of TADs. Mutilated dentitions with multiple teeth missing are also very difficult because of lack of appropriate anchorage. With the help of TADs, we may treat these challenging malocclusions with ease, which otherwise would be deemed as a mission impossible without the help of TADs and interdisciplinary treatment. There are many more challenging malocclusions like retreatment due to the dissatisfaction with the previous treatment or even nightmares of orthodontists, the ankylosis. The applications of TADs in these challenging malocclusions will be demonstrated and discussed.VIEW MORE
劉人文 / Eric, Jein-Wein Liou
Regenerate Accelerated Tooth MovementCV 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.VIEW MORE
鄭信忠 / Johnson, Hsin-Chang Cheng
Smile Esthetics Consideration in Orthodontic ManagementCV or Autobiography :Johnson Hsin-Chung Cheng, D.D.S, MSD, PhD.
President, Taiwan Association of Orthodontist
Acting Dean and Professor, College of Oral Medicine, Taipei Medical University
Director, Department of Orthodontics, Taipei Medical University Hospital, Taipei,Taiwan.
Smile esthetics has been one of main focused topics in orthodontic treatments since the twenty-first century. Though there are many affecting factors including qualitative and quantitative smile measurements in the past literatures review, the smile perceptions of subjective and objective on orthodontic outcomes are the first consideration needed to be considered and distinguished. The first of all, this report will present the Taiwanese preference of facial esthetic from my current research and the elucidation of affecting factors toward smile esthetic on orthodontic treatment (such as malocclusion types, extraction/ nonextraction, horizontal and vertical dimension of malocclusion, faciadental morphology…, etc.) from my series of evidence-based researches. I will explain how to apply the evidence-based researches to the clinical orthodontic cases . Finally, some important home messages will be proposed to the audiences about the clinical considerations of smile esthetics on orthodontic treatment.VIEW MORE
賴向華 / Eddie, Hsiang-Hua Lai
Treatment Strategies of Gummy SmileCV or Autobiography :Dr. Eddie Lai is currently assistant professor in NTU. He has obtained his full academic and specialist training, including DDS, MS and PhD degrees and also Membership of Orthodontists, Fellow in Dental Surgery of the Royal College of Surgeons of Edinburgh. He serves as a vice president in Taiwan Association of Orthodontists and executive committee member in Taiwan Board of Orthodontists. His major research interest relies on subjects of orthodontics, biomechanics and dental education. He has published around 60 peer review articles in scientific journals, a few book chapters and over 300 conference papers focusing in those areas of interest.
Orthodontists today have to meet their patients’ increasing demand for esthetic satisfaction. This quest for youth and beauty is a new development in orthodontics, leading practitioners to try to discern the elements that determine facial esthetics and to set out rules and principles. The essential factor in this demand doubtless concerns a youthful and harmonious smile. Excessive gingival display in smiling may make the smile displeasing or even repulsive. Correcting ‘‘gummy smile’’ thus becomes a prime treatment objective in response to patient demand. Assessment should therefore seek the etiology of gummy smile, as this will determine optimal treatment, which is usually orthodontic or orthodontic and surgical. Which cases call for one approach or the other? There are the questions the present presentation seeks to answer.
Although moderate gummy smile (<4 mm) can be quite acceptable and esthetically pleasing if the gum is healthy, more pronounced cases are less well tolerated and require treatment. When gummy smile is due to strong vertical alveolar growth at the incisors, isolated orthodontic treatment can provide satisfactory results, especially with the development of bone anchorages, extending the potential of classic orthodontics. Maxillofacial surgery, however, is indispensable when etiology is basal, related to excessive vertical growth of the maxilla as a whole. Case studies have shown that, according to the type of treatment, esthetic, dento-alveolar and skeletal consequences differ. It is therefore essential to set treatment objectives in agreement with patient expectations as of the first examination, to select the most appropriate form of treatment.VIEW MORE