A Case Report Of Non-Extraction Treatment For Maxillary Canine Transposition,
2022
Dentistry Department, Taipei Veterans General Hospital
A Case Report Of Non-Extraction Treatment For Maxillary Canine Transposition, Ting-Fang Cheng, Shou-Hsin Kuang, Jenny Hwai-Jen Fong, Tzu-Ying Wu
Taiwanese Journal of Orthodontics
Tooth transposition is a rare but disturbing problem for patients in esthetic and functional aspects. In this report, we describe a case with unilateral transposition of the maxillary canine and premolar. The patient received full mouth non-extraction orthodontic treatment with upper 1st premolar substitution for upper canine. Crown morphology modification and gingival plastic surgery for harmonious anterior esthetics and function were performed. Patient was satisfied with the treatment outcome.
Management Of Occlusal Plane Canting By Yin-Yan Archwire – A Case Report,
2022
Department of Orthodontics, Kaohsiung Medical University Hospital
Management Of Occlusal Plane Canting By Yin-Yan Archwire – A Case Report, Chia-Ni Lin, Szu-Ting Chou
Taiwanese Journal of Orthodontics
It is important to diagnose the underlying cause of an occlusal plane canting so that an appropriate treatment plan can be efficiently implemented. Burstone1said the patient treated surgically should have the occlusal plane parallel to facial structure. In nonsurgical patient, there may be a cant to the plane of occlusion relative to the face. In the past, this cant was not easily treated because of mechanical difficulties in intruding entire posterior segments. With skeletal anchorage device, we can solve the problem today, but can we do it in a different way? This case report presents a young male suffered from …
Bite Force And Maximum Mouth Opening After Orthognathic Surgery,
2022
Orthodontic Department, National Taiwan University Hospital, Taipei, Taiwan
Bite Force And Maximum Mouth Opening After Orthognathic Surgery, Hsiang-Ling Hu, Sheng-Chin Lin, Yun-Yun Wu, Yuan-Yi Tun, Man-Ching Cheng, Chung-Chen Jane Yao, Wen-Chung Chang
Taiwanese Journal of Orthodontics
In order to achieve better facial esthetics, functional occlusion, maintaining tissue health and stable treatment results, orthognathic surgery is required in certain orthodontic patients. While planning orthognathic surgery, we should inform patients benefits and risks associated in this treatment modality. Possible side effects including the post-operational temporary physiological influences to the patient should be mentioned.Thus, patients will be less anxious and deal with those problems more comfortably. The most common post-operation influences of orthognathic surgery is hypomobility. The objective measurements for mandibular function are maximum mouth opening (MMO), maximum bite force, and muscle fatigability. We summarize and compare the literatures …
A Paradigm Shift In Lingual Orthodontics – Literature Review,
2022
Sijhih Cathay General Hospital, New Taipei City, Taiwan
A Paradigm Shift In Lingual Orthodontics – Literature Review, Yu-Ching Huang, Li-Hsiang Lin
Taiwanese Journal of Orthodontics
During the past decades, environments surrounding orthodontics have dramatically been changed. Demands for esthetics from patients are becoming more and more, and the number of patients who want to have invisible treatment has been increasing, especially in Europe and Asian countries. The lingual orthodontic therapy though started in 1972, could not be popular until the beginning of 1990. So far, the biggest changes in technical aspects of lingual orthodontics include development of patient and orthodontist friendly lingual treatment system with new appliances and digital technology for computerized treatment plan modeling and wire bending. Lingual orthodontics is no longer difficult nor …
Surgical Orthodontic Treatment For A Class Iii Patient With Anterior Openbite And Multiple Idiopathic Root Resorption – A Case Report,
2022
Orthodontic Division, Department of Dentistry, National Taiwan University Hospital; Graduate Institute of Clinical Dentistry, School of Dentistry, College of Medicine, National Taiwan University
Surgical Orthodontic Treatment For A Class Iii Patient With Anterior Openbite And Multiple Idiopathic Root Resorption – A Case Report, Shao-Chun Lu, Shu-Yin Chao, Yao-Der Huang, Sang-Heng Kok, Yi-Jane Chen
Taiwanese Journal of Orthodontics
Severe root resorption with excessive tooth mobility may compromise the capability of the teeth to sustain occlusal loading, and possibly lead to extraction. Apical external root resorption (AERR) is considered as one of the risks associated with orthodontic treatment. Some clinical factors have been shown to correlate with orthodontic treatment, whereas the determinants for predicting AERR consistently were not found. Therefore, orthodontists must monitor the amount of root resorption during the course of orthodontic treatment. Multiple idiopathic root resorption (MIRR) is a rare condition. If MIRR is present, the severity of tooth mobility may get worsen during orthodontic treatment. The …
Maxillary Molar Distalization With Introral Fixed Appliances And Miniscrew Anchorage — Case Report,
2022
Orthodontic Department, Taipei Veterans General Hospital; Zuoying Branch of Kaohsiung Armed Forces General Hospital
Maxillary Molar Distalization With Introral Fixed Appliances And Miniscrew Anchorage — Case Report, Tung-Yu Li, Fang-Chin Chen, Hwai-Jen Fong, Tzu-Ying Wu, Sou-Hsin Kuang
Taiwanese Journal of Orthodontics
Fixed maxillary molar distalization appliance is an effective and noncompliance way for space regain. But with the increased confidence on skeletal anchorage, maximum anchorage preparation was planned with miniscrew in recent years. In this article, we cited two clinical cases to introduce an intraoral noncompliance appliance for maxillary molar distalization. RAMDA (rapid molar distalizing appliance) assist with skeletal anchorage is our modified technique used in these cases. From superimposition, we found that average rate of distalization was 1-2 mm per month. However, distal tipping of molar and anterior anchorage loss were also noted when using miniscrew as indirect anchorage.
Severe Skeletal Class Ii With Unilateral Crossbite Treated With Tads: A Case Report,
2022
Taipei Veterans General Hospital, Taipei, Taiwan
Severe Skeletal Class Ii With Unilateral Crossbite Treated With Tads: A Case Report, Shih-Chin Chen, Yu-Cheng Liaw, Shou-Hsin Kuang, Mayling Lee, Fang-Chin Chen
Taiwanese Journal of Orthodontics
Unilateral posterior crossbite case is quite complicated and difficult for orthodontist. The etiology may include any combination of dental, skeletal and neuromuscular functional components. This case is a 23 years old female with severe class II skeletal pattern and right side posterior teeth complete buccal crossbite. With the aid of TADs (temporary anchorage device) and full coverage biting plate, unilateral posterior buccal crossbite was corrected in an efficient way. Without an orthognathic surgery, the results of good dentition control in vertical direction and large amount of overjet reduction can still be obtained.
Using Rapid Maxillary Expander Plus Chin Cap To Correct Complete Anterior Cross Bite Followed By Fixed Appliance With Facial Mask – A Case Report,
2022
Dr. Su's Orthodontic Center
Using Rapid Maxillary Expander Plus Chin Cap To Correct Complete Anterior Cross Bite Followed By Fixed Appliance With Facial Mask – A Case Report, Yuen-Yung Tsang, Chia-Yi Pan, Ming-Juean Su, Yu-Ling Cheng
Taiwanese Journal of Orthodontics
Anterior cross bite is not rare and is one of the characteristics of class III malocclusion. The prevalence rate is about 4-14% in Chinese children. Rapid Maxillary Expander (RME) has been successfully used for many years because it is not only used for correction of vertical, transverse and sagittal dimension of maxilla but also exert on reduction in nasal airway resistance. A 10 years 4 months old Chinese girl came with a chief complaint of anterior cross-bite and severe crowding. She had allergy history with nasal congestion. Complete anterior crossbite and mid-face deficiency with severe dento-alveolar discrepancy on upper arch …
Literature Review: Low Level Laser Therapy In Orthodontics,
2022
Department of Dentistry and Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University; Department of Orthodontics, National Taiwan University Hospital
Literature Review: Low Level Laser Therapy In Orthodontics, Meng-Huan Tsai, Hsuan-Yu Shih, Hui-Chen Tsai, Hsuan-Yi Hsiao, Chung-Chen Jane Yao
Taiwanese Journal of Orthodontics
Treatment duration is one of the major determinants for patients receiving orthodontic treatment. To avoid long treatment time, orthodontists have to design sound mechanics meeting the anchorage demands and delivering appropriate force system to the tooth and its supporting tissues. However, the more crucial factors related to the treatment efficiency may lie in the individual biological response which is still largely unknown, to the force system which orthodontists regularly delivered. Low level laser with specific power setting has been shown as a non-invasive adjunctive treatment without obvious side effect for facilitating orthodontic movement in some clinical studies. This article reviews …
The Prevalence And Patterns Of Permanent Teeth Agenesis In Bilateral Cleft Lip And Palate Children Of Southern Taiwan,
2022
Department of Orthodontics, Kaohsiung Chang Gung Memorial Hospital,Chang Gung University College of Medicine, Kaohsiung, Taiwan
The Prevalence And Patterns Of Permanent Teeth Agenesis In Bilateral Cleft Lip And Palate Children Of Southern Taiwan, Te-Ju Wu, Shiu-Shiung Lin, Jui-Pin Lai, Wen-Ching Tsai, Ren-Jye Chen, Yu-Jen Chang
Taiwanese Journal of Orthodontics
Objective: To retrospectively investigate the prevalence and patterns of tooth agenesis in permanent dentition of bilateral cleft lip and palate (BCLP) children in Southern Taiwan. Patients: 156 Taiwan children (99 males and 57 females) with BCLP aged from 4 to18 years were selected from the craniofacial records between July, 1983 and June, 2008 in the Department of Orthodontics, Kaohsiung Chang Gung Memorial Hospital. Materials and methods: Dental records including the panoramic radiographs, periapical films of anterior teeth, upper occlusal films and dental models of the selected patients were examined. Results: The prevalence of tooth agenesis of permanent dentition is 78.8%. …
Forced Eruption Of Multiple Impacted Teeth With Dentigerous Cyst – A Case Report,
2022
Dentistry Department, Taipei Veterans General Hospital; School of Dentistry, National Yang-Ming University
Forced Eruption Of Multiple Impacted Teeth With Dentigerous Cyst – A Case Report, Tzu-Ying Wu, Chia-Chen Li, Cheng-Hisen Wu, Shih-Yun Wu, Shou-Hsin Kuang
Taiwanese Journal of Orthodontics
This case report presented a11 y/o Chinese female with Class I skeletal pattern and normal mandibular plane angle.Multiple teeth were impacteddue to a dentigerous cyst over anterior region in the maxilla. After the enucleation of the cyst, the crown portion of 11 was exposed but with improper position and angulation. Our treatment plan was described as below: (1) Forced eruption of tooth 11-13 and align with the upper dentition, (2) Follow up the permanent teeth eruption in mandible. Total treatment duration was 31 months, the dentition was finished at Angle Class I canine and molar relationships, normal overjet and overbite …
Literature Review : How To Accelerate Orthodontic Tooth Movement ?,
2022
Department of Dentistry and Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University; Department of Orthodontics, National Taiwan University Hospital
Literature Review : How To Accelerate Orthodontic Tooth Movement ?, Shun-Hsin Chen, Pei-Wen Liao, Hui-Jen Tsai, Ming-Hsien Lan, Pei-Chuan Hung, Wen-Pei Wong, Chung-Chen Jane Yao, Hsuan-Yi Hsiao
Taiwanese Journal of Orthodontics
How to accelerate orthodontic tooth movement has been an interesting issue to orthodontists and researchers. Ways being proposed to accelerate orthodontic tooth movement (OTM) include medication, mechanical stimulation, low level laser, corticotomy, periodontal accelerated osteogenic orthodontics, and surgery-first orthognathic surgery. Those invasive surgical procedures are used successfully on orthodontic patients for acceleration of OTM. Other non-invasive procedures, though with promising results obtained from animal experiments, await further clinical confirmations. This article reviewed recent clinical and animal studies, and the mechanism of medication, mechanical stimulation and surgical approaches for their effectiveness on OTM.
The Application Of Computer-Aided Three-Dimensional Simulation And Prediction In Orthognathic Surgery (Caspos) For Treating Dento-Skeletal Patients,
2022
Chang Gung University College of Medicine, Kaohsiung, Taiwan
The Application Of Computer-Aided Three-Dimensional Simulation And Prediction In Orthognathic Surgery (Caspos) For Treating Dento-Skeletal Patients, Yu-Jen Chang, Shiu-Shiun Lin, Te-Ju Wu, Wen-Ching Tsai, Wei-Yung Hsu, Jui-Pin Lai
Taiwanese Journal of Orthodontics
AIM: Computer-aided craniofacial reconstructions have been developed to allow surgeons to accurately simulate and predict the surgical outcome on complicated 3-D craniofacial structures. We have developed a new computerized method of 3-D simulation and prediction in orthognathic surgery (CASPOS) that not only enables clinicians to plan and simulate the surgical procedures, but also provides a bony "guiding splint" to allow surgeons to precisely position the bony segments into the planned location. This study is aimed for assessing the accuracy of simulation and prediction of our CASPOS protocol. MATERIALS AND METHOD: Fifteen adult patients with severe dento-skeletal discrepancies treated with orthodontics …
Optimizing Facial Esthetics In Ogs Patients,
2022
Department of Dentistry and Graduate Institute of Clinical Dentistry,School of Dentistry, National Taiwan University; Department of Orthodontics, National Taiwan University Hospital
Optimizing Facial Esthetics In Ogs Patients, Meng-Huan Tsai, Shao-Chun Lu, Joung-Lin Liaw, Ming-Zen Su, Ya-Ting Wang, Hsin-Fu Frank Chang, Chung-Chen Jane Yao, Stella Ya-Hui Yang
Taiwanese Journal of Orthodontics
At present, even if the orthognathic surgical procedure had been improved and the acceptance of surgery increased, the patients and dentists could not be satisfied with simply the recovery of masticatory function. Facial esthetics has become a marked issue. However, everything has its own limitation. There is no single treatment could fulfill all the facial esthetics requirements, not even the orthognathic surgery. If the orthognathic surgery could be combined with other cosmetic surgical procedure, the patients would be more likely to receive relatively compre-hensive treatment. First, this article reviewed the fundamental definition of facial esthetic in psychology. In addition, we …
Characteristics Of Dentofacial Morphology In Bimaxillary Protrusion Patients,
2022
Department of Orthodontics, Kaohsiung Medical University Hospital
Characteristics Of Dentofacial Morphology In Bimaxillary Protrusion Patients, Chiung-Yu Chen, Hong-Po Chang, Yi-Hsin Yang, Yu-Chuan Tseng, Chin-Yun Pan, Szu-Ting Chou
Taiwanese Journal of Orthodontics
Objective: Dentofacial abnormalities, such as bimaxillary protrusion, can be distressing both socially and psychologically. The aim of this study is to identify the cephalometric features of bimaxillary protrusion and highlight the measurements that characterize bimaxillary protrusion when compared to a normal occlusion group. Materials and methods: Lateral cephalograms of 60 pretreated bimaxillary protrusion young adults were compared with 60 untreated young adults with normal occlusion. Male and female were equal in each group. Thirty-two landmarks were identified for 61 skeletal, dental and soft tissue parameters. The differences between the two groups were analyzed by means of Student’s t-test and two-way …
Longitudinal Study On Neurosenory Disturbance Caused By Bilateral Sagittal Split Osteotomy In Mandibular Prognathism- Questionnaire Survey,
2022
Craniofacial Research Center, Department of Medical Research, Chang Gung Memorial Hospital, Linkou, Taiwan4
Longitudinal Study On Neurosenory Disturbance Caused By Bilateral Sagittal Split Osteotomy In Mandibular Prognathism- Questionnaire Survey, Yea-Ling Yang
Taiwanese Journal of Orthodontics
The bilateral sagittal split osteotomy (BSSO) is one of the most common surgical procedures to correct mandibular skeletal problems. The incidence of inferior alveolar nerve injury in this procedure is 9% ~85%. The clinical symptoms are numbness over the patients’ lower lip and chin. In our study, we aimed to use the questionnaire to evaluate the patients’ neurosensory disturbance (NSD) after BSSO one week (T1)、six months (T2) and one year (T3). Through the result of this study, NSD occurred mostly in the bilateral chin (84.0%, 63.1%, 60.0%) and lower lip (70.0%, 67.7%, 49.1%) and affected the feeling in touching (60.0%, …
Non-Surgical Correction Of Skeletal Class Iii Malocclusion With Severe Crowded Dentition By Dental Arch Expansion– A Case Report,
2022
Department of Orthodontics, Chung Shan Medical University Hospital, Taichung, Taiwan
Non-Surgical Correction Of Skeletal Class Iii Malocclusion With Severe Crowded Dentition By Dental Arch Expansion– A Case Report, Yun-Ting Chen, Wen-Ken Tai, Chih-Chen Chou, Hoi-Shing Luk, Heng-Ming Chang, Chia-Tze Kao
Taiwanese Journal of Orthodontics
Using clip type self-ligation bracket combined with nickel-titanium arch wires can easily relief dental crowding and achieve arch expanding for adult patients with severe dentition crowding. This 25-year-old female was diagnosed as skeletal Class III with maxillary deficiency and severe dental crowding, anterior and posterior crossbite. We used clip type self-ligation bracket with non-tooth extraction, non-surgery, and non mini-implant insertion treatment. Successfully improved facial profile and achieve the harmonious proportion of vertical facial 's appearance.
Correction Of Severe Class Ii Division 1 Malocclusion With Miniscrew Anchorage– A Case Report,
2022
Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Craniofacial Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
Correction Of Severe Class Ii Division 1 Malocclusion With Miniscrew Anchorage– A Case Report, Yuh-Jia Hsieh, Ellen Wen-Ching Ko, Yu-Fang Liao, Chiung-Shing Huang
Taiwanese Journal of Orthodontics
A case report describes the camouflage treatment of an adult patient with skeletal Class II jaw base relationship and moderate crowding. A 28-year-old woman presented with chief complaints of protrusive lips and upper front teeth. The clinical examination showed a convex facial profile, retrognathic mandible, excessively proclined upper and lower incisors, large overbite and overjet and a Class II division 1 malocclusion. To correct the facial profile, lip protrusion, large overjet, space deficiency and approximately full Class II relationship, distal movement of the maxillary first molars using miniscrew anchorage along with extraction of the maxillary and mandibular first premolars was …
The Stability Of Combined Orthodontic And Orthognathic Surgery Treatment– A Review Article,
2022
Orthodontic Department, National Taiwan University Hospital School of Dentistry and Graduate Institute of Clinical Dentistry; College of Medicine, National Taiwan University
The Stability Of Combined Orthodontic And Orthognathic Surgery Treatment– A Review Article, Ting-Wei Chu, I-Ling Hong, Fon-Lan Chan, Yun-Yun Wu, Yi-Jane Chen, Chung-Chen Jane Yao,, Kuan-Yen Peng
Taiwanese Journal of Orthodontics
How to achieve stability after combined orthodontic and orthognathic surgery? Many factors can affect the post-treatment stability of either intermaxillary relationship, dental occlusion or facial profile, which include pre-operative preparations, types and range of surgical procedure, amount of bone movement, types of fixation, condylar position during fixation and the ability of soft tissue adaptation. This article reviewed and summarized factors affecting the postoperative stability according to the treatment stages.
Synthetic Elastomeric Chain– A Literature Review,
2022
School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
Synthetic Elastomeric Chain– A Literature Review, Wan-Tin Lin, Hsin-Chung Cheng, Yung-Kang Shen, Yi-Jyun Chen, Chien-Feng Chen
Taiwanese Journal of Orthodontics
Elastomeric chains were introduced to the orthodontic profession in the 1960s’, and are now an integral part of every day practices. They are used to generate light continuous forces for correcting rotations, consolidating spaces, and retraction canines. They are inexpensive, easily applied, relatively hygienic and require little or no patient cooperation. Elastomeric chain, however, are nor without their disadvantages. When exposed to an oral environment, they absorb water and saliva, permanent stain, and suffer breakdown of internal binds leading to permanent deformation. They also experience rapid loss of force due to stress relaxation, resulting in a gradual loss of effectiveness. …
