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2022

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Articles 31 - 60 of 256

Full-Text Articles in Orthodontics and Orthodontology

Orthopedic-Orthodontic Intervention For A Skeletal Class Iii Malocclusion With An Inverted Maxillary Central Incisor Impaction – A Case Report, Hsin-Ho Chen, Sheng-Chin Lin, Shin-Huei Wang, Yuan-Yi Tung, Hsuan-Yi Hsiao, Yi-Jane Chen Aug 2022

Orthopedic-Orthodontic Intervention For A Skeletal Class Iii Malocclusion With An Inverted Maxillary Central Incisor Impaction – A Case Report, Hsin-Ho Chen, Sheng-Chin Lin, Shin-Huei Wang, Yuan-Yi Tung, Hsuan-Yi Hsiao, Yi-Jane Chen

Taiwanese Journal of Orthodontics

The etiologies of Class III malocclusions may result from mandibular prognathism, maxilla deficiency, or both. For growing children with Class III malocclusions characterized with deficient maxilla, the treatment of choice would be protraction of the maxilla. Successful orthopedic treatment through growth modification has increased the possibility to correct developing Class III malocclusion with non-surgical method. In addition, maxillary expansion is frequently required in treatment of Class III malocclusions by increase the transverse width of the maxilla, and possibly enhance the protraction effect of the facemask through disrupting the maxillary suture system. Herein we report a case of 8-year-old boy presenting …

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Long-Term Evaluation And Treatment For A Patient With Costochondral Graft Reconstruction In Hemifacial Microsomia – A Case Report, Shih-Wen Fan, Wen-Ching Ko, Kuo-Ting Chen Aug 2022

Long-Term Evaluation And Treatment For A Patient With Costochondral Graft Reconstruction In Hemifacial Microsomia – A Case Report, Shih-Wen Fan, Wen-Ching Ko, Kuo-Ting Chen

Taiwanese Journal of Orthodontics

A 17-year-old girl who was diagnosed as Pruzansky Grade III hemifacial microsomia (HFM) at right side, came with chief complaint of face asymmetry and occlusal deviation. The patient was regularly followed up in the Chang Gung Craniofacial Center. She had her affected right side ramus and condyle reconstructed with costochondral graft (CCG) around 6 years of age. The extraoral examinations indicated severe facial asymmetry with longer right face and prominent left face; the lower jaw was severely deviated to the left side due to overgrowth of the CCG at right mandible; besides, the right reconstructed condyle was ankylosed. The presurgical …

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Methods Of Gaining Dental Space – A Literature Review, Wei-Ting Chang, Hsuan-Yi Hsiao, Chi-Ying Huang, Yi-Jane Chen Aug 2022

Methods Of Gaining Dental Space – A Literature Review, Wei-Ting Chang, Hsuan-Yi Hsiao, Chi-Ying Huang, Yi-Jane Chen

Taiwanese Journal of Orthodontics

When treating patients with teeth mal-alignment and crowding, orthodontists have many strategies to gain the space. This article reviews the conventional methods which focus on molar distalization and arch expansion, rather than tooth extraction and temporary anchorage devices. The outcome of treatment with pendulum, distal jet, rapid maxillary expansion, and lip bumper were evaluated from various aspects. The aims of the literature review are to help orthodontists formulate an optimized treatment plan and predict treatment outcome and limitation in acquiring space by molar distalization and arch expansion.

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Orthodontic Treatment To Improve Periodontal Defect In A Patient With Lower First Molar Extraction– A Case Report, Yu-Ling Cheng, Yuen-Yung Tsang, Chia-Yi Pan, Ming-Juean Su Aug 2022

Orthodontic Treatment To Improve Periodontal Defect In A Patient With Lower First Molar Extraction– A Case Report, Yu-Ling Cheng, Yuen-Yung Tsang, Chia-Yi Pan, Ming-Juean Su

Taiwanese Journal of Orthodontics

A 23 year-old male came with chief complaint of lower anterior crowding and protrusive lower lip. Dental examination revealed missing teeth 14, 24 and 34 and horizontally impacted 38 and 48. Poor prognosis of tooth 36 was found after evaluation. Anterior cross bite and open bite at his left side occlusion were also seen. In this case, removal of teeth 36 and 38 were selected instead of 44 extraction. Thus the timing and proper sequence of tooth extraction become critical. The biomechanics of tooth movement was designed to ensure that all teeth are in functional occlusion and the lower left …

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Relationship Between Orthodontic Treatment And Root Resorption – A Literature Review, Yu-Tnig Wu, Wen-Ken Tai, Hoi-Shing Luk, Chih-Chen Chou, Heng-Ming Mark Chang, Chia-Tze Kao Aug 2022

Relationship Between Orthodontic Treatment And Root Resorption – A Literature Review, Yu-Tnig Wu, Wen-Ken Tai, Hoi-Shing Luk, Chih-Chen Chou, Heng-Ming Mark Chang, Chia-Tze Kao

Taiwanese Journal of Orthodontics

Shorting of tooth or external root resorption that happen during or after completion of orthodontic treatment are troublesome. The root resorption could affect treatment outcome, unstable orthodontic tooth movement and even cause medical dispute. The etiologies of external root resorption could be systemic problems or local factors. The mechanism of external root resorption is still unclear and under investigation. This article reviewed the factors and possible causes on the orthodontic root resorption and discussed the possible role of light emitted diode (LED) biophotostimualtion effects to inhibit the root resorption. The information was provided for orthodontists in daily practice.

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The Proper Timing And Strategies To Initiate Orthodontic Treatment For Patients With Class Iii Malocclusion– A Literature Review, I-Hsuan Su, Ar-Ting Wang, Feng-Lan Chan, Jenny Zwei-Chieng Chang Aug 2022

The Proper Timing And Strategies To Initiate Orthodontic Treatment For Patients With Class Iii Malocclusion– A Literature Review, I-Hsuan Su, Ar-Ting Wang, Feng-Lan Chan, Jenny Zwei-Chieng Chang

Taiwanese Journal of Orthodontics

Treatment for Class III malocclusion has been a controversial issue due to the unpredictable growth pattern. According to the literatures, various early interventions have been proposed to modify the skeletal relationship in order to reduce the need for the future complex orthognathic surgery. The influences of the age and the growth potential of patients at the time of treatment were also commonly discussed. Systematic review of the literatures showed that the amount of orthopedic effect was related to the age of patients; however, for those that start treatment before puberty, the stage of the mixed dentition at time of treatment …

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Non-Extraction Treatment For Class Ii Malocclusion With Dentition Crowding – A Case Report, Hung-Hsiang Liao, Shao-Chun Lu, Ya-Ting Wang, Joung-Lin Liaw, Fong-Lan Chan, Chung-Chen Jane Yao Aug 2022

Non-Extraction Treatment For Class Ii Malocclusion With Dentition Crowding – A Case Report, Hung-Hsiang Liao, Shao-Chun Lu, Ya-Ting Wang, Joung-Lin Liaw, Fong-Lan Chan, Chung-Chen Jane Yao

Taiwanese Journal of Orthodontics

To coordinate the dental midlines with facial midline is one of the orthodontic treatment goals. This case report presented a case with Class II dentition crowding and asymmetry by non-extraction therapy with the aids of TADs. Transpalatal arch with extension arm was used to correct buccal version of upper second molar which contributed the mandibular deviation. Molar distalization and arch widening were achieved by using TADs. Midline and Class II elastics resulted more correction of dental midlines to facial midlines. At the end of treatment, Class I canine and molar relationships and centered midlines were obtained. Better facial symmetry was …

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Correction Of Angle Class Ii Malocclusion And Buccal Crossbite Assisted By Tads – A Case Report, Huei-Ying Mu, Yuen-Yung Tsang, Yu-Ling Cheng, Chia-Yi Pan, Ming-Jeaun Su, Yi-Min Liu Aug 2022

Correction Of Angle Class Ii Malocclusion And Buccal Crossbite Assisted By Tads – A Case Report, Huei-Ying Mu, Yuen-Yung Tsang, Yu-Ling Cheng, Chia-Yi Pan, Ming-Jeaun Su, Yi-Min Liu

Taiwanese Journal of Orthodontics

Complete buccal crossbite is rare and difficult to be treated either orthodontically or surgically. This article presents an adult patient with bilateral Class II molar relationship and complete buccal crossbite at the right premolars region. She was treated with four bicuspids extraction along with upper buccal and palatal TADs as well as cross elastics in order to achieve well-aligned dentition. The buccal crossbite was corrected and and good profile was achieved.

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Consideration Of Therapy In Angle Class I Malocclusion With Anterior Open Bite, Yu-Hsiang Lin, Yi-Sheng Lee, Chih-Peng Su, Hsin-Kuang Chen, Ming-Shi Tsai, Sheng-Yang Lee Aug 2022

Consideration Of Therapy In Angle Class I Malocclusion With Anterior Open Bite, Yu-Hsiang Lin, Yi-Sheng Lee, Chih-Peng Su, Hsin-Kuang Chen, Ming-Shi Tsai, Sheng-Yang Lee

Taiwanese Journal of Orthodontics

Anterior open bite is a common and challengeable malocclusion. To manage Angle Class I molar relationship in adult cases with several problems, such as high mandibular plane angle, maxillary canting, anterior open bite, discrepancy of anterior Bolton ratio and bilateral posterior crossbite, we should choose therapeutic method carefully. It is not necessary to improve occlusion and profile with orthognathic surgery. A case of an adult woman with tongue thrust had the chief complaint of anterior open bite. The principle of orthodontic treatment without orthognathic surgery is the occlusal plane change and vertical control to achieve the forward rotation of mandible …

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Correction Of Class Ii Malocclusion And Lower Premolar Impaction Of An Adult Patient With Tads – A Case Report, Chien-Cheng Chen, Shih-Syun Syu, Yi-Horng Chen Aug 2022

Correction Of Class Ii Malocclusion And Lower Premolar Impaction Of An Adult Patient With Tads – A Case Report, Chien-Cheng Chen, Shih-Syun Syu, Yi-Horng Chen

Taiwanese Journal of Orthodontics

Dentoalveolar ankyloses of primary tooth sometimes cause impaction of its successor tooth. In this condition, extraction of the ankylosed primary tooth and orthodontic forced eruption of the impacted permanent tooth may be a choice of treatment. In this case report, we present a 23-year-old female with Angle Class II malocclusion, whose mandibular left 2nd premolar impacted due to ankyloses of its primary tooth. She also had dental arch crowding and gummy smile problems. The patient received full-mouth orthodontic non-extraction treatment combine using TADs. As a result, her problems of malocclusion and gummy smile improved.

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Orthodontic Correction Of Severe Gummy Smile In Class Ii Division 1 Malocclusion: A Case Report, Yu-Jen Hsu, Sheng-Chin Lin, Wen-Pei Wong, Emily Yi-Min Liu, Pi-Huei Liu, Jenny Zwei-Chieng Chang, Yi-Jane Chen Aug 2022

Orthodontic Correction Of Severe Gummy Smile In Class Ii Division 1 Malocclusion: A Case Report, Yu-Jen Hsu, Sheng-Chin Lin, Wen-Pei Wong, Emily Yi-Min Liu, Pi-Huei Liu, Jenny Zwei-Chieng Chang, Yi-Jane Chen

Taiwanese Journal of Orthodontics

Class II division 1 malocclusion with deepbite and gummy smile can be treated in several ways. Adequate intrusion and retraction of maxillary incisors may improve the smiling appearance as well as the facial profile. However, anterior torque control can be challenging. Herein, we report a patient with 5 mm gummy smile, where the final esthetic improvement was achieved by combined use of posterior and anterior miniscrews. The 19-year-old women presented with lip protrusion, convex profile, retrusive chin, excessive gingival display, and a Class II division 1 malocclusion with mild crowding in the upper and lower dentition (1~2 mm). Cephalometric analysis …

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Lip Canting Correction In Patients With Facial Asymmetry After Orthognathic Surgery, Pr Wu, Sc Chen, Tf Chen, Ty Wu Aug 2022

Lip Canting Correction In Patients With Facial Asymmetry After Orthognathic Surgery, Pr Wu, Sc Chen, Tf Chen, Ty Wu

Taiwanese Journal of Orthodontics

Patients with facial asymmetry usually accompany with lip canting. Most of these patients came for orthognathic surgery combine orthodontic treatment for chin deviation and asymmetric facial problem. However, the improvement of lip canting after surgery is not as predictable as correction of chin deviation. From our literature review, the correlated factors of lip canting were discussed, and the relationship between improvement of lip canting with two jaw/ one jaw orthognathic surgery were reviewed.

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Etiology Of Impacted Maxillary Permanent Central Incisor And Associated Orthodontic Management, Yi-Fang Lo, Jeng-Fen Liu Aug 2022

Etiology Of Impacted Maxillary Permanent Central Incisor And Associated Orthodontic Management, Yi-Fang Lo, Jeng-Fen Liu

Taiwanese Journal of Orthodontics

Purpose. To investigate etiologies associated with impacted maxillary permanent central incisors, retrospectively. In later part of this article, we also reviewed the literature of the orthodontic management of impacted maxillary permanent central incisors. Methods. Standardized periapical radiographs of upper anterior region from 2005 to 2014 in Department of Orthodontics and Pediatric Dentistry, Taichung Veterans General Hospital, Taiwan, were reviewed. From the 1025 reviewed upper anterior periapical radiographs, a total of 64 patients with 68 impacted maxillary permanent central incisors were found and were subsequently evaluated for the etiologies which cause impaction. Results. The most common etiology of impacted maxillary permanent …

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Mechanical Properties Of Temporary Anchorage Devices – Review Article, Hsin-Ho Chen, Hsuan-Yi Hsiao, Yuan-Yi Tung, Hui-Jen Tsai, Man-Ching Cheng, Eddie Hsiang-Hua Lai Aug 2022

Mechanical Properties Of Temporary Anchorage Devices – Review Article, Hsin-Ho Chen, Hsuan-Yi Hsiao, Yuan-Yi Tung, Hui-Jen Tsai, Man-Ching Cheng, Eddie Hsiang-Hua Lai

Taiwanese Journal of Orthodontics

Temporary anchorage devices (TADs)are common used in orthodontic treatment for anchorage and force application. They have many advantages, including small size for insertion, potential for immediate loading, no need of patients’ compliance. The success rate of miniscrews was more than 80%. There are several factor affecting stability of TADs, including: insertion torque, soft tissue condition and bone quality of insertion area, magnitude and direction of orthodontic force, oral hygiene condition and insertion method. There are many different shapes, materials and types of miniscrews. Different types of TADs may have different mechanical properties and result in different success rate. We discussed …

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Predictive Methods And Formula Of Class Iii Mandibular Growth Potential – A Review Article, Shih-Ying Lin, Wen-Pei Wong, Jenny Zwei-Chieng Chang, Min-Chih Hung Aug 2022

Predictive Methods And Formula Of Class Iii Mandibular Growth Potential – A Review Article, Shih-Ying Lin, Wen-Pei Wong, Jenny Zwei-Chieng Chang, Min-Chih Hung

Taiwanese Journal of Orthodontics

Class III malocclusion is common in Asian population and is a major challenge in orthodontic treatment. Some patients received orthopedic treatment to correct the skeletal disharmony in an earlier stage might have to be retreated later because of differential skeletal growth of the maxilla and mandible during the pubertal growth spurt. This article reviews some literature and discusses the craniofacial growth in Class III malocclusion. The methods and formula to predict future Class III growth pattern are also reviewed. This will help clinicians to decide whether to start camouflage treatment during the growth period or wait until completion of growth …

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Literature Review: Low Level Laser Therapy In Orthodontics, Wei-Chung Chen, Hui-Chen Tsai, Man-Ching Cheng, Chung-Chen Jane Yao Aug 2022

Literature Review: Low Level Laser Therapy In Orthodontics, Wei-Chung Chen, Hui-Chen Tsai, Man-Ching Cheng, Chung-Chen Jane Yao

Taiwanese Journal of Orthodontics

Long treatment time and discomfort in the orthodontic treatment are the most common factors that p’t decides not to accept treatment. Recently, there are many ways to accelerate orthodontic tooth movement and relieve pain during the treatment progress. “Low level laser therapy” which is proven by many clinical studies is a non-invasive way to achieve these goals. This article reviews cellular, animal, and clinical studies about low level laser therapy used in orthodontics.

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Clinical Risk Of Pulp Tissue Through Orthodontic Treatment – A Review Article, Ying-Pan Chen, Shu-Fen Yang, Yi-Jen Chen, Tzu-Ying Wu Aug 2022

Clinical Risk Of Pulp Tissue Through Orthodontic Treatment – A Review Article, Ying-Pan Chen, Shu-Fen Yang, Yi-Jen Chen, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

While moving teeth under orthodontic force, there are unavoidable tissue reaction due to the forces applied to the dental pulp and periodontal tissue. Under appropriate orthodontic treatment planning, most of the tissue reactions were limited to temporary pulpitis, blunting of dental root apex etc. However, a few patients will start up serious reactions such as dental pulp obliteration, tooth discoloration, dental pulp necrosis, or even severe apical root resorption and invasive cervical root resorption. These will not only have an impact on tooth structure, but will also affect the prognosis of the tooth. Therefore, by recalling the relevant papers in …

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Orthodontic – Orthoganthic Management Of A Skeletal Class Iii - A Case Report, Ching-Ling Huang, Han-Jen Hsu, Yu-Chuan Tseng Aug 2022

Orthodontic – Orthoganthic Management Of A Skeletal Class Iii - A Case Report, Ching-Ling Huang, Han-Jen Hsu, Yu-Chuan Tseng

Taiwanese Journal of Orthodontics

Treatment of Class III malocclusion in non growing patients usually involves either orthodontic camouflage or orthognathic surgery (OgS). Aesthetic outcome has gained in importance in the treatment of orthognathic patients . The surgery options of Class III malocclusions have historically been treated by isolated mandibular setback and maxillary advancement, or bimaxillary osteotomy. This is a case of 17-year-old female patient with skeletal Class III with mandibular prognathism, anterior crossbite and open bite, and severe crowding. Treatment plan included orthodontic treatment with orthognathic surgery, extraction of four first bicuspids and upper bilateral second molar due to poor position and inclination. We …

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Surgical Correction Of Mandibular Prognathism With Spaced Dentition – A Case Report, Hsuan-Fang Wang, Sze-Hsien Yu, Ya-Wen Wang, Chih-Liang Ho, Kang-Yee Wang, Jenny Zwei-Chieng Chang, Fang-Yu Yang, Eddie Hsiang-Hua Lai Aug 2022

Surgical Correction Of Mandibular Prognathism With Spaced Dentition – A Case Report, Hsuan-Fang Wang, Sze-Hsien Yu, Ya-Wen Wang, Chih-Liang Ho, Kang-Yee Wang, Jenny Zwei-Chieng Chang, Fang-Yu Yang, Eddie Hsiang-Hua Lai

Taiwanese Journal of Orthodontics

This 25-year-old male was characterized with mandibular prognathism and spaced dentition. We applied bilateral sagittal split osteotomy and genioplasty to set back the mandible and the prominent chin. The excess spaces of lower dentition were consolidated and then closed surgically by anterior subapical osteotomy. After treatment, his facial esthetics and occlusion were improved significantly. In the spaced dentition, the space closure by anterior subapical osteotomy after space consolidation may provide a more efficient alternative treatment.

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Orthodontic Treatment In Periodontal Compromised Patient With Class Ii Posterior Cross Bite And Deep Overbite, Chia-Wei Lin, Ellen Wen-Ching Ko Aug 2022

Orthodontic Treatment In Periodontal Compromised Patient With Class Ii Posterior Cross Bite And Deep Overbite, Chia-Wei Lin, Ellen Wen-Ching Ko

Taiwanese Journal of Orthodontics

Orthodontic management in adult patients with advanced periodontitis is complicated and highly technique sensitive because of missing teeth and reduced alveolar attachment.This case report presents a 32-years old female who was referred from periodontal department, complained about maxillary protrusion and anterior spacing. The diagnoses were Class II division 1 malocclusion, combined with bilateral posterior crossbite and deep overbite. After periodontal inflammation was under well controlled, complicated orthodontic teeth movements were achieved with the aid of TADs. The orthodontic treatment includes the retraction of maxillary anterior teeth and intrusion and palatal movement of upper right segment. In the lower arch, the …

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Dental Implant For Orthodontic Anchorage – A Case Report, Szu-Hsien Yu, Hsuan-Fang Wang, Hsun-Cheng Chang, Eddie Hsiang-Hua Lai Aug 2022

Dental Implant For Orthodontic Anchorage – A Case Report, Szu-Hsien Yu, Hsuan-Fang Wang, Hsun-Cheng Chang, Eddie Hsiang-Hua Lai

Taiwanese Journal of Orthodontics

Three-dimensional planning of a dental-implant site is critical when the dental implants placed in the edentulous area are to be used initially as anchor for tooth movement and later as prosthetic abutments for the fixed restoration. The combined orthodontic and prosthetic implant restorative treatment of an adult patient with missing teeth, diastema of teeth, and malocclusion is described in this article. Plastic cast bases combined with customized position plates allowed the precise transfer of the proposed implant position from the diagnostic arrangement to the original cast to avoid compromising subsequent orthodontic treatment.

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Retrospective Analysis Of Treatment And Management For Cleft Lip And Palate Patients Before The Completion Of Primary Dentition, Pei-Chi Tang, Jui-Pin Lai, Faye Huang, Te-Ju Wu, Yu-Jen Chang, Li-Tyng Sun, Yng-Tzer Lin, Tzu-Ying Chen, Shiu-Shiung Lin Aug 2022

Retrospective Analysis Of Treatment And Management For Cleft Lip And Palate Patients Before The Completion Of Primary Dentition, Pei-Chi Tang, Jui-Pin Lai, Faye Huang, Te-Ju Wu, Yu-Jen Chang, Li-Tyng Sun, Yng-Tzer Lin, Tzu-Ying Chen, Shiu-Shiung Lin

Taiwanese Journal of Orthodontics

Objective: This study involved a retrospective review of treatment and management for cleft lip and palate patients before the completion of their primary dentition. These newborn cleft babies were assessed immediately in the craniofacial center, and referral for presurgical nasoalveolar molding was arranged if it was indicated. The aims of this study were to retrospectively investigate (1) the distributions of varied types of cleft among our patients, and (2) the repair treatment and relevant management for cleft patients before the completion of their primary dentition. Methods: Hospital records of newborn cleft lip and palate patients enrolled in Kaohsiung Chang Gung …

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Investigation Into Changes Of Soft Tissue Landmarks And Constructed Intermediate Points On Facial Profile In Skeletal Class Iii Female Patients Treated By Bimaxillary Surgery, Yi-Hao Lee, Yu-Jen Chang, Te-Ju Wu, Jui-Pin Lai, Shun-Jen Yu, Yin-Tai Chen, Yea-Yin Yen, Shiu-Shiung Lin Aug 2022

Investigation Into Changes Of Soft Tissue Landmarks And Constructed Intermediate Points On Facial Profile In Skeletal Class Iii Female Patients Treated By Bimaxillary Surgery, Yi-Hao Lee, Yu-Jen Chang, Te-Ju Wu, Jui-Pin Lai, Shun-Jen Yu, Yin-Tai Chen, Yea-Yin Yen, Shiu-Shiung Lin

Taiwanese Journal of Orthodontics

Objective: Improving facial profile by orthognathic surgery is requested more often by female patients. The aim of this study is to investigate the responses of major labeled landmarks and constructed intermediate points on facial profiles of Class III female patients treated by bimaxillary surgery. Material and methods: 16 skeletal Class III female patients requiring Le Fort I osteotomy and bilateral sagittal split osteotomy were selected in this study. Cephalometric tracing was carried out, and selected landmarks were digitized. The surgical outcome and the correlation of soft to hard tissue changes were assessed. Results: The surgical result revealed normalized skeletal relationship …

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Knowing The Traps Of Primary Failure Of Eruption (Pfe) — A Case Report With Serial Panoramic Radiographs And Cone Beam Computerized Tomographic (Cbct) Imaging, Heng-Ming Mark Chang, Kai-Lung Wang, Daniel Yong-Kie Wong, Chia-Tze Kao, Shun-Chu Hsieh, Chih-Chen Chou, Yung Chen, Kwok-Hing Ho Aug 2022

Knowing The Traps Of Primary Failure Of Eruption (Pfe) — A Case Report With Serial Panoramic Radiographs And Cone Beam Computerized Tomographic (Cbct) Imaging, Heng-Ming Mark Chang, Kai-Lung Wang, Daniel Yong-Kie Wong, Chia-Tze Kao, Shun-Chu Hsieh, Chih-Chen Chou, Yung Chen, Kwok-Hing Ho

Taiwanese Journal of Orthodontics

Introduction: Tooth eruption is a complex process and may fail to occur due to several reasons. Primary failure of eruption (PFE) is one of the rare eruption disturbances which do not related to any obstruction in the eruptive pathway or any systematic disorders. This type of eruption failure often affects the posterior teeth and results in subsequent posterior open bite. Any orthodontic attempt is ineffective due to lack of inherent eruptive potential of tooth. Case Report: An 8-year-old skeletal class II young boy with posterior open bites was referred to our department for the poor chewing function. Clinical finding showed …

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Surgical-Orthodontic Correction Of Skeletal Class I Malocclusion With Facial Asymmetry: A Case Report, Kai-Wen Yu, Chi-Ying Huang, Stella Ya-Hui Yang, Yi-Jane Chen Aug 2022

Surgical-Orthodontic Correction Of Skeletal Class I Malocclusion With Facial Asymmetry: A Case Report, Kai-Wen Yu, Chi-Ying Huang, Stella Ya-Hui Yang, Yi-Jane Chen

Taiwanese Journal of Orthodontics

Correction of facial asymmetry is one of the most difficult challenges in orthognathic surgery. Bardinet classified facial asymmetries based on three clinical entities: mandibular lateral deviations, dental asymmetries without skeletal involvement, and skeletal asymmetries. In some cases, combinations of soft tissue deformities and skeletal discrepancies complicate treatment outcome and management. This report presents a case of a 29-year-old male with skeletal Class I malocclusion, high mandibular plane angle, facial asymmetry, and dental Class III malocclusion. Mild left-side down occlusal plane canting and chin deviation to right side was observed. The pre-surgical orthodontic treatment started with full-mouth fixed appliance therapy for …

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Class Iii Anterior Openbite With Impacted Tooth, Wei-Chung Chen, Man-Ching Cheng, Ming-Hsien Lan, Hue-Jen Tsai, Eddie Hsiang-Hua Lai, Chung-Chen Jane Yao Aug 2022

Class Iii Anterior Openbite With Impacted Tooth, Wei-Chung Chen, Man-Ching Cheng, Ming-Hsien Lan, Hue-Jen Tsai, Eddie Hsiang-Hua Lai, Chung-Chen Jane Yao

Taiwanese Journal of Orthodontics

Angel’s Class III malocclusion is common in Oriental people. Orthodontic treatment combined with orthognethic surgery will be necessary to improve facial appearance and correct the malocclusion if skeletal discrepancy exists. Impacted dilacerated tooth is also a tough situation we face during orthodontic treatment. We have to evaluate all kinds of conditions to decide whether we align the tooth or not. This case is about a 19-yearold girl whose chief complain was mandible prognathism and crowded teeth. In the beginning examination, we found the tooth 25 was a impacted dilacerated tooth. In the end of the treatment, by orthodontic treatment combined …

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Accuracy Of The Computer-Aided 3-D Virtual Planning System Combined With Double-Splint Design In The Orthognathic Surgery — A Pilot Study, Hou-Ren Jiang, Adrian Ming-Chi Hsieh, Sheng-Yang Lee Aug 2022

Accuracy Of The Computer-Aided 3-D Virtual Planning System Combined With Double-Splint Design In The Orthognathic Surgery — A Pilot Study, Hou-Ren Jiang, Adrian Ming-Chi Hsieh, Sheng-Yang Lee

Taiwanese Journal of Orthodontics

Purpose: The application of 3D virtual planning has been playing an increasingly important role in complicated craniomaxillofacial surgery. It remains a challenge, however, how to precisely transfer the virtual planning to the actual clinical outcome. Cone-beam CT scan, Simplant O&O virtual plan system with 3D printed splints were applied to the patients in our center with dentofacial deformities. This study is to evaluate the accuracy of the virtual plan system and the reliability of the clinical outcomes. Material and Method: Five patients with severe skeletal discrepancies between the upper and lower jaws were included in the study. All of them …

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The Prevalence And Patterns Of Tooth Agenesis Among Bilateral Cleft Lip And Palate Patients - A Retrospective Study, Li-Tyng Sun, Te-Ju Wu, Yu-Jen Chang, Jui-Pin Lai, Faye Huang, Wen-Ching Tsai, Tzu-Ying Chen, Kai-Shin Lee, Shiu-Shiung Lin Aug 2022

The Prevalence And Patterns Of Tooth Agenesis Among Bilateral Cleft Lip And Palate Patients - A Retrospective Study, Li-Tyng Sun, Te-Ju Wu, Yu-Jen Chang, Jui-Pin Lai, Faye Huang, Wen-Ching Tsai, Tzu-Ying Chen, Kai-Shin Lee, Shiu-Shiung Lin

Taiwanese Journal of Orthodontics

Objective: Tooth agenesis is quite common in cleft lip and palate patients. This study was aimed for retrospectively investigating the prevalence and patterns of tooth agenesis among bilateral cleft lip and cleft palate (CLCP) patients. Patients: The hospital data and x-ray films of bilateral CLCP patients no younger than 7 years old in the Craniofacial Center, Kaohsiung Chang Gung Memorial Hospital from June 1974 to September 2015 were selected. The enrolled list contained 188 patients (male: 124; female: 64). The mean age of our patient was 10.13 years (range: 7.0 ~ 23.6 years). Materials and methods: Patients’ dental records and …

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Application Of Digital Models In Orthodontic And Maxillofacial Surgery – A Literature Review, Yu-Jen Hsu, Kang-Yee Wang, Hung-Cheng Chiu, Emily Yi-Min Liu, Yun-Yun Wu Aug 2022

Application Of Digital Models In Orthodontic And Maxillofacial Surgery – A Literature Review, Yu-Jen Hsu, Kang-Yee Wang, Hung-Cheng Chiu, Emily Yi-Min Liu, Yun-Yun Wu

Taiwanese Journal of Orthodontics

The digital dental models are not subject to physical damage, and require negligible storage space. They can be transferred electronically to specialists easily and can be carried out with virtual setups. A precision 3-dimensional head model can be fabricated by integrating a digital dental model into a maxillofacial 3-D CT image. Using this 3-D image, it is possible to perform dental decompensation, reposition of osteotomized bony structures, and simulate the postoperative results on hard and soft tissue in 3-D on our computer screen. Besides, it also spares the laboratory time with CAD/CAM surgical splint manufactured.

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Surgical Orthodontic Correction Of Class Iii Malocclusion With Anterior Openbite - A Case Report, Yi-Jen Liu, Ya-Wen Wang, Wen-Pei Wong, Min-Chih Hung, Chung-Chen Jane Yao, Yi-Jane Chen Aug 2022

Surgical Orthodontic Correction Of Class Iii Malocclusion With Anterior Openbite - A Case Report, Yi-Jen Liu, Ya-Wen Wang, Wen-Pei Wong, Min-Chih Hung, Chung-Chen Jane Yao, Yi-Jane Chen

Taiwanese Journal of Orthodontics

The etiologies of skeletal Class III malocclusion include excessive growth of mandible, deficient growth of maxilla, and the combination of both. Anterior openbite may be due to skeletal, dental, habitual, or functional problems. Mini-implant can be a reliable anchorage for maxillary molar intrusion, which facilitate anterior openbite closure by counterclockwise rotation of the mandible. However, the mandibular counterclockwise rotation may increase antero-posterior jaw discrepancy in Class III malocclusion. Therefore, surgical orthodontics is often required in the treatment of Class III malocclusion with anterior openbite. In this report, we present the treatment of an adult Class III patient with mandibular prognathism, …

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