The Raison D’Etre Of The Mandibular Condyle,
2022
Ortho Dental Clinic, Private Practice, Taipei, Taiwan; Department of Dentistry, Taipei Medical University, Taipei, Taiwan
The Raison D’Etre Of The Mandibular Condyle, Huei-Mei Tsai
Taiwanese Journal of Orthodontics
The mandibular condyle has a multi-directional growth capacity due to the fact that cells deeply located in the fibrous covering is a prechondroblastic zone which undergoing continued proliferation during active growth. The whole histogenetic process allows for the ramus to lengthen in a pressure site. The adaptive nature of the condylar growth is the main source in scientific validation of functional orthopedic concept and therapy. Bio-dynamic factors which can stimulate the growth of the mandibular condyle and glenoid fossa have been speculated with clinical and experimental studies. The reversing effects of treatment on growth direction and changes in size and …
Correction Of Facial Asymmetry With Surgery-First Orthognathic Approach – Case Report,
2022
Department of Orthodontic and Craniofacial Dentistry, Chang Gung Memorial Hospital, Taipei, Taiwan
Correction Of Facial Asymmetry With Surgery-First Orthognathic Approach – Case Report, Hsin-Yi Hsieh, Sam Sheng-Pin Hsu, Chiung-Shing Huang, Eric Jein-Wein Liou, Ellen Wen-Ching Ko, Yu-Fang Liao, Clement Cheng-Hui Lin, Yu-Ray Chen
Taiwanese Journal of Orthodontics
A case of mandibular prognathism with facial asymmetry was presented. Surgery-first orthognathic approach was performed that no pre-surgical orthodontic treatment was done before surgery. Within this treatment modality, patient had major profile improvement in the beginning of the treatment and total treatment time was shortened. The etiology of mandibular deviation, treatment principles of facial asymmetry, and the advantages of surgery-first orthognathic approach were discussed.
Atypical Extraction-Therapy With Implant Orthodontics – Case Report,
2022
Department of Orthodontic and Craniofacial Dentistry, Chang Gung Memorial Hospital, Taipei, Taiwan
Atypical Extraction-Therapy With Implant Orthodontics – Case Report, Emma Yuh-Jia Hsieh, Sam Sheng-Pin Hsu, Yu-Ching Hung, Hsio-Fang Hung, Hsin-Yi Hsieh
Taiwanese Journal of Orthodontics
A case report was presented with a female patient of class II malocclusion,bimaxillary dentoalveolar protrusion with space deficiency. Bilateral lower left second molars were mesially inclined impactions with large caries. The lower left second molar was diagnosed with acute apical periodontitis. Treatment planning was described as below: (1) asymmetric extraction of upper bilateral first premolar , lower right first premolar and lower left second molar, (2) A bone screw was placed in the lower left region for distalization of lower left dentition and midline control. The treatment results were satisfied and stable, including great improvement of facial profile , coincident …
Treatment Of Inadequate Tooth Structure And Uneven Gingival Level In The Esthetic Zone With Forced Eruption – Case Report,
2022
Department of Prosthodontic, Chang Gung Memorial Hospital, Taipei, Taiwan
Treatment Of Inadequate Tooth Structure And Uneven Gingival Level In The Esthetic Zone With Forced Eruption – Case Report, Yu-Shu Liao, Sam Sheng-Pin Hsu, Pi-Lun Chen, Yu-Hwa Pan
Taiwanese Journal of Orthodontics
Restoration of severely damaged anterior tooth requires comprehensive evaluation and carefully treatment plan making. A case of inadequade supra-gingival tooth structure of maxillary central incisor which needs restoration was presented. Forced eruption was used to lengthen the clinical crown, and adjust the gingival level. Then full ceramic crowns were restored for esthetic demands of the patient. Evaluation, treatment plan consideration, and overview of the forced eruption was provided.
Clinical Managements For Missing Maxillary Lateral Incisors – Literature Review,
2022
Department of Orthodontics, Wan Fang Hospital
Clinical Managements For Missing Maxillary Lateral Incisors – Literature Review, Chih-Yu Lin, Li-Hsiang Lin
Taiwanese Journal of Orthodontics
The etiology of missing maxillary lateral incisors may include congenital missing ones, and previous extractions due to traumatic injury or large dental caries. Spacing and malocclusions following missing maxillary lateral incisors often result in significant impacts on facial esthetics and oral function. To treat these patients, there are orthodontic alternatives to choose from: (1) canine substitution, (2) autotransplantation, (3) conventional prosthetic restorations, and (4) single implants. The aim of this article is to review the prevalence of congenital missing maxillary lateral incisors, and the above-mentioned treatment options for managing missing maxillary lateral incisors.
Correction Of Skeletal Class Iii With Surgery-First Orthognathic Approach – Case Report,
2022
Department of Orthodontic and Craniofacial Dentistry, Chang Gung Memorial Hospital, Taipei, Taiwan
Correction Of Skeletal Class Iii With Surgery-First Orthognathic Approach – Case Report, Sam Sheng-Pin Hsu, Chiung-Shing Huang, Eric Jein-Wein Liou, Ellen Wen-Ching Ko, Yu-Fang Liao, Hsin-Yi Hsieh, Clement Cheng-Hui Lin, Yu-Ray Chen
Taiwanese Journal of Orthodontics
A case of mandibular prognathism with facial asymmetry was presented. Surgery-first orthognathic approach was performed that no pre-surgical orthodontic treatment was done before surgery. Within this treatment modality, patient had major profile improvement in the beginning of the treatment and total treatment time was shortened. The philosophy, clinical application, long term stability, and special consideration of the surgery-first orthognathic approach were discussed.
Three Dimensional Computed Tomography Utilized In Cephalometry – A Technical Investigation,
2022
Dental Department of E-Da Hospital
Three Dimensional Computed Tomography Utilized In Cephalometry – A Technical Investigation, Chih-Yu Chen, Hsun-Heng Tsai, Kuo-Chang Yeh, Li-Wen Lin, Wei-Te Wu
Taiwanese Journal of Orthodontics
Current cephalometry in dentistry relies on plain lateral films to evaluate craniofacial structure of patients. This concept is based on 2D images which are difficult to apply in complicated craniofacial structures. The purpose of this study is to develop a 3D cephalometric analysis by reconstructing the 3D-CT skull images, which provides landmark identification and Downs analysis in the 3D software. This system also has the feature of multiple view windows, auto cephalometric measurement and counting, and simplified user's interface. A pilot study, using the landmark identification and cephalometric analysis which was processed by ten observers at two different times, was …
Facial Asymmetry Corrected With Surgical Orthodontic Treatment – Case Report,
2022
Chang Gung Memorial Hospital, Taipei, Taiwan
Facial Asymmetry Corrected With Surgical Orthodontic Treatment – Case Report, Cindy Hsin-Yi Hsieh, Ellen Wen-Ching Ko, Sam Sheng-Pin Hsu, Chiung-Shing Huang, Clement Cheng-Hui Lin
Taiwanese Journal of Orthodontics
The case report is presented on an adult patient who had surgical-orthodontic treatment to solve her skeletal Class III malocclusion with mandible deviation. Conventional approach of surgical-orthodontic therapy requires a varied period of pre-surgical orthodontic treatment, the most important work to do is dental decompensation. The case was treated by surgical-first approach with minimal pre-surgical orthodontics, i.e. most of the detail orthodontic works (leveling, alignment and interdigitation) were done after orthognathic surgery. The total treatment time was 12 months. The facial symmetry and optimal occlusion were achieved.
The Investigation Of The Taiwan Orthodontist Practice Behavior – Assistant Research,
2022
Orthodontic Department, Chung Shan Medical University Hospital
The Investigation Of The Taiwan Orthodontist Practice Behavior – Assistant Research, Tsui-Hsien Huang, Shiau-Lee Liew, Hung-Chih Chien, Yun-Ting Chen, Yi-Jyun Chen, Chia-Tze Kao
Taiwanese Journal of Orthodontics
The orthodontic specialty developed more than twenty five years in Taiwan. The orthodontic assistant system and its training are still not formed. The orthodontist’s clinical management and assistant interrelationship is less reported. The purpose of this study was to investigate the assistant role in orthodontic clinic. Totally one hundred and thirty two clinics were investigated. The assistant works and its correlated issue were calculated. The results showed most orthodontists allowed assistant works are including X ray taking, impression taking and oral hygiene education. The salary of the assistant that paid by orthodontists were ranged from 25000 to 40000 dollars. All …
Management Of Impacted Maxillary Central Incisors,
2022
Department of Orthodontics, Kaohsiung Chang Gung Memorial Hospital
Management Of Impacted Maxillary Central Incisors, Wen-Ching Tsai, Lin-Chan Lao
Taiwanese Journal of Orthodontics
Although the incidence of impaction of the upper central incisor is not so frequent, with about 0.06% to 0.2% incidence rate, the occlusal relationship and symmetric esthetics of upper anterior dentition are obviously affected. The patient’s psychology may also be altered while situation getting worse. Thus, the differential diagnosis and treatment modalities for impaction of upper central incisor should be emphasized. For the guidance of clinical treatment, the following text would focus on factors about impaction of upper central incisor including the etiology, diagnostic method, treatment principles, and also the post-treatment rehabilitation and retention.
Correction Of Unexpected Post-Surgical Anterior Open Bite With Miniscrew Orthodontics – Case Report,
2022
Department of Orthodontic and Craniofacial Dentistry, Chang Gung Memorial Hospital, Taipei, Taiwan
Correction Of Unexpected Post-Surgical Anterior Open Bite With Miniscrew Orthodontics – Case Report, Sam Sheng-Pin Hsu, Yu-Fang Liao, Hsin-Yi Hsieh, Grace Ya-Ying Teng, Yi-Ting Chiang, Shih-Han Chen
Taiwanese Journal of Orthodontics
A case of anterior open bite with facial asymmetry is presented. The un-expected anterior open bite and retrusive mandible occurred shortly following orthognathic surgery (LeFort I - 3 pieces + Bilateral sagittal split osteotomy + genioplasty). The anterior open bite was then successfully corrected with miniscrew orthodontics.Possible causes of post-surgical anterior open bite and the treatment options were discussed comprehensively.
Cone-Beam Ct Facilitates The Diagnosis And Treatment Of An Orthodontic Case With Multiple Maxillary Anterior Teeth Impaction,
2022
Department of Orthodontics, Chi Mei Medical Center, Liou Ying Campus
Cone-Beam Ct Facilitates The Diagnosis And Treatment Of An Orthodontic Case With Multiple Maxillary Anterior Teeth Impaction, Jhih-Wei Chen, Hui-Lin Chen, Chun-Liang Kuo
Taiwanese Journal of Orthodontics
Radiographic examination plays an important role in diagnosis and treatment of impacted tooth. However, conventional plain radiographic image is insufficient to provide enough information about impacted teeth in the case with multiple impacted teeth. Recently, cone-beam computed tomography and 3-D image are advanced and more details about impacted teeth and neighboring structure could be delineated from 3-D image. The detailed information will greatly improve the accuracy of diagnosis and implantation of an appropriate orthodontic treatment. This case report here presents a child with 3 impacted teeth in right anterior maxilla. With the aid of 3-D cone-beam CT image, 2 impacted …
The Investigation Of The Taiwan Orthodontist Practice Behavior,
2022
Orthodontic Department, Chung Shan Medical University Hospital
The Investigation Of The Taiwan Orthodontist Practice Behavior, Shiau-Lee Liew, Hung-Chih Chien, Yun-Ting Chen, Yi-Jyun Chen, Chia-Tze Kao
Taiwanese Journal of Orthodontics
The orthodontic treatment is more popular at Taiwan in these twenty five years. The information of orthodontist’s clinic practice literature is few. The purpose of the present study was to investigate the orthodontists of Taiwan association of orthodontist (TAO) whose clinic practice behavior at north area of Taiwan. The investigations were done by the orthodontists answer on the questions. The questions were included administration of the clinic, the level of clinic computerized, the practice promotion and the influence of practice environment change. Totally one hundred and thirty two effects answer were recorded and calculated. The individually question outcomes were shown …
Changes In The Morphology Of Mandibular Symphysis Secondary To Pre-Surgical Dental Decompensation In Class Iii Malocclusion,
2022
Department of Orthodontics, Chang Gung Memorial Hospital, Taiwan
Changes In The Morphology Of Mandibular Symphysis Secondary To Pre-Surgical Dental Decompensation In Class Iii Malocclusion, Yu-Ching Wang, I-Ming Tsai, Hui-Ling Chen
Taiwanese Journal of Orthodontics
The purpose of this study is to evaluate the changes in morphology of mandibular symphysis in Class III malocclusion after pre-surgical dental decompensation. Thirteen patients underwent orthognathic surgery to correct Class III skeletal and dental malocclusions. The dental decompensation was indicated for these patients to gain greater setback amount of bilateral sagittal split ramus osteotomy. The morphology was assessed through lateral cephalograms obtained initially and preoperatively. After pre-surgical dental decompensation, the sagittal discrepancies were maintained. There was statistically significant lower incisor proclination, and both the FMIA and IMPA approximated the norms. When the mandibular incisors were labially inclined, the thinner …
The Historical Progress Of The Orthodontics, Part Ii,
2022
Department of Orthodontics, Chang Gung Memorial Hospital, Kaohsiung, Taiwan
The Historical Progress Of The Orthodontics, Part Ii, Te-Ju Wu, Wen-Ching Tsai
Taiwanese Journal of Orthodontics
In the end of 19th century, based on hard working of predecessors, orthodontics has more glory development; many orthodontic theory and appliances were displayed. Among them, Edward Angle,「The father of modern orthodontics」,played the most important role. Owing to his passion and devotion of orthodontics, the profile of orthodontics was getting more and more clear. There are so many conflicts and controversy during the development of orthodontics. However, it is the agitation that bring the orthodontics whole new appearance, also with the improvement of clinical efficiency, the orthodontics is getting more close to the need of patient and the ideal treatment …
The Historical Progress Of The Orthodontics, Part I,
2022
Department of Orthodontics, Chang Gung Memorial Hospital, Kaohsiung, Taiwan
The Historical Progress Of The Orthodontics, Part I, Te-Ju Wu, Wen-Ching Tsai
Taiwanese Journal of Orthodontics
The orthodontic treatment has become the popular choice while the public seeking for optimal occlusal function and esthetics. The discomfort accompanied with the treatment progress is gradually faded out by the post-treatment surprise. Taking a broad view, as the secret veil is lift off, the modern orthodontic treatment is chasing a whole new vision vigorously. However, as seeing the past, we should realize what we get now is not easily come by. Beginning from a division of oral medical science, the orthodontics is now regarded as a professional specialty. With the diversity, splash and the persistency for outstanding, the every …
Correction Of Mandibular Prognathism With Double- Jaw Surgery And Clockwise Rotation Of The Occlusal Plane- Case Report,
2022
Department of Orthodontic and Craniofacial Dentistry, Chang Gung Memorial Hospital, Taipei, Taiwan
Correction Of Mandibular Prognathism With Double- Jaw Surgery And Clockwise Rotation Of The Occlusal Plane- Case Report, Sam Sheng-Pin Hsu, Chiung-Shing Huang, Eric Jein-Wein Liou, Ellen Wen-Ching Ko, Clement Cheng-Hui Lin, Yu-Ray Chen
Taiwanese Journal of Orthodontics
An alternative surgical treatment plan was presented to show how to efficiently correct mandibular prognathism without large overjet discrepancy presented. The protrusive chin was eliminated through clockwise rotation of the occlusal plane and maxillo-mandibular complex. Within this method, no complicated orthodontic treatment was needed and the total treatment time was therefore shortened. The smiling arc was also improved. The philosophy, clinical application, long term stability, and side effects of the occlusal plane manipulation in orthognathic surgery were discussed.
Early Orthodontic Treatment For An Anterior Cross-Bite Malocclusion With Modified Hawley Appliance And 2×4 Fixed Appliance - A Case Report,
2022
Department of Orthodontics and Pedodontics, Oral Medicine Research Center, Chung-Shan medical University, Tai-Chung, Taiwan
Early Orthodontic Treatment For An Anterior Cross-Bite Malocclusion With Modified Hawley Appliance And 2×4 Fixed Appliance - A Case Report, Shang-Hung Tsai, Tzu-Hsin Lee
Taiwanese Journal of Orthodontics
The etiology of anterior cross-bite is multi-factor and the advocated treatment options were abundant. Early orthodontic treatments including chin-cap, face mask and palatal expansion have been recommended by many scholars. But some other clinicians would delay the orthodontic treatment combined with orthognathic surgery for Class III cases till the completion of growth, if there were no obvious detriment to patients’ oral function or psychological impact to their social life. However, for cases of non-skeletal anterior cross-bite (Pseudo-Class III) malocclusion, early orthodontic correction would be beneficial to normal maxillary forward growth and may prevent occlusal trauma of anterior teeth. This case …
The Possibility Of Acceleration In Orthodontic Tooth Movement,
2022
Department of Orthodontic and Craniofacial Dentistry, Chang Gung Memorial Hospital, Taipei, Taiwan
The Possibility Of Acceleration In Orthodontic Tooth Movement, Yu-Jia Liou, Ellen Wen-Ching Ko, Eric Jein-Wein Liou, Betty Chien-Jung Pai
Taiwanese Journal of Orthodontics
In recent times, orthodontic treatment has attained significant interest and momentum. It has become more acceptable and admirable as a prime modality of treatment that not only enhances the facial esthetics but also can improve the function of the orofacial structures, than ever before. However, the layperson perceives it to be a treatment modality which consumes drastically longer period of time. Recent research pertaining to faster orthodontic tooth movement has dwelled in to this overwhelming area of reduced and more efficient treatment time. This review article specifically deals with such modalities of treatment which could elicit shorter treatment period than …
An Overview Of Motivation For Orthodontic Treatment,
2022
Orthodontic Department, Taipei Medical University Hospital,Taipei, Taiwan; Taipei Medical University SchoolofDentistrySchool of Dentistry
An Overview Of Motivation For Orthodontic Treatment, Hsin-Chung Cheng, Pei-Shuan Chen, Chun-Yi Kao, Chen-Chiou Chen
Taiwanese Journal of Orthodontics
Factors that affect the results of orthodontic treatment are various, and the understanding of motivation for orthodontic treatment is one of the most important because of its reference value in clinical diagnosis and treatment planning. In the past, there was just a few researches relating to this subject and most of them were conducted by questionnaire. Because of the differences methods of experimental design, the results varied. This review paper collect related articles in recent twenty years and analyze them in seven ways, including the definition of motivation, factors affecting orthodontic motivation, the relationship between orthodontic motivation and malocclusion and …
