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2022

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Articles 6391 - 6420 of 23769

Full-Text Articles in Medicine and Health Sciences

Long-Term Follow-Up Of Class Iii Malocclusion–Two Case Reports In Two Siblings With Different Treatment Outcome, Yu-Ling Cheng, Chia-Chen Li, Ming-Jeaun Su Aug 2022

Long-Term Follow-Up Of Class Iii Malocclusion–Two Case Reports In Two Siblings With Different Treatment Outcome, Yu-Ling Cheng, Chia-Chen Li, Ming-Jeaun Su

Taiwanese Journal of Orthodontics

Anterior crossbite is a common clinical problem that requires early diagnosis and proper treatment. Here we report on a pair of siblings with anterior crossbite. They have a similar dental and facial profile at the start of treatment, but developed different types of dental facial patterns on follow-up. Our report highlights that it is difficult to precisely predict the facial growth simply based on patient’s family history and the data of cephalometric analysis. Young patients with growth potential should be monitored continuously after orthodontic treatment. Second orthodontic treatment or orthognathic surgery may sometimes be required to correct a severe dentofacial …

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The Case Report On Self Ligation Metal Brackets Applied On Skeletal Class Iii Malocclusion Combined With Orthognathic Surgery, Shirly Liew, Hoi-Shing Luk, Chia-Tze Kao Aug 2022

The Case Report On Self Ligation Metal Brackets Applied On Skeletal Class Iii Malocclusion Combined With Orthognathic Surgery, Shirly Liew, Hoi-Shing Luk, Chia-Tze Kao

Taiwanese Journal of Orthodontics

To accelerate the orthodontic treatment time, more self ligating brackets were applied clinically. This case reported on by applying self ligating bracket on patient who needed orthodontic treatment and orthognathic surgery. This is a class III skeletal malocclusion with mandible prognathic profile. The patient is asking for reducing mandible prognathism. After orthodontic examination, the treatment plan was designed as orthodontic treatment first then orthognathic surgery later. The orthodontic phase was by applying self ligating bracket (Carriere) to decompensate mandible lower incisors and align the teeth. The next step was surgery phase which was performed the orthognathic surgery on mandible by …

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From Class Ii To Class Iii: Unpredictable Growth On The Follow Up Of Two Cases Of Skeletal Malocclusion, Chia-Yi Pan, Ming-Jeaun Su Aug 2022

From Class Ii To Class Iii: Unpredictable Growth On The Follow Up Of Two Cases Of Skeletal Malocclusion, Chia-Yi Pan, Ming-Jeaun Su

Taiwanese Journal of Orthodontics

Predicting growth direction and growth potential is an important part of orthodontic treatment in growing patient. Unfortunately, variation between individuals makes growth prediction complicated and difficult. This article is to discuss two skeletal Class II cases had unexpected growth and transferred into skeletal Class III during growth. This unexpected growth also leading to unsatisfied outcomes and secondary treatment.

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Isw (Improved Super-Elastic Ti-Ni Alloy Wire) For Non-Extraction Treatment Of Adult Case With Linguoversion Of Bilateral Lower Second Premolars, Guan-Ling Dong, Yuan-Hou Chen, Jian-Hong Yu, Hsien-Hsiung Chiang Aug 2022

Isw (Improved Super-Elastic Ti-Ni Alloy Wire) For Non-Extraction Treatment Of Adult Case With Linguoversion Of Bilateral Lower Second Premolars, Guan-Ling Dong, Yuan-Hou Chen, Jian-Hong Yu, Hsien-Hsiung Chiang

Taiwanese Journal of Orthodontics

Summary: An adult male (20 years old) came to our clinic with a chief complaint of lower posterior crowding. Clinical examination found mild spacing over the lower anterior teeth and lingually blocked-in lower second premolars. Because the patient didn’t want to receive extraction treatment, ISW (improved superelastic Ti-Ni alloy wire) leveling was performed to relieve lower arch crowding. Sufficient space was created by distalization with open coil spring and crimpable stopper. With ISW MEAW-like wire as reinforced anchorage over the lower arch, a satisfactory result was obtained. Meanwhile, lower left second premolar was derotated with open coil spring and elastic …

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Correction Of Posterior Crossbite Malocclusion–Application Of The Quad-Helix Appliance, Guo-Wei Huang, Li-Hsiang Li, Chih-Peng Su, Chin-Yu Chiang, Mao-Sheng Wang, Sheng-Yang Lee Aug 2022

Correction Of Posterior Crossbite Malocclusion–Application Of The Quad-Helix Appliance, Guo-Wei Huang, Li-Hsiang Li, Chih-Peng Su, Chin-Yu Chiang, Mao-Sheng Wang, Sheng-Yang Lee

Taiwanese Journal of Orthodontics

Posterior crossbite is a common malocclusion in the deciduous or mixed dentition. Various techniques of posterior crossbite correction have been suggested, including rapid maxillary expansion, slow expansion with a quad-helix appliance or removable expansion plate, grinding, and composite onlay. The aim of this article is to review the fabrication, clinical adjustment, advantages and disadvantages, and functions of the quad-helix appliance.

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Nickel Allergy In Orthodontic, Chao-Hsuan Sun, Li-Hsiang Lin, Bilin Spring Hsu, Sheng-Yang Lee Aug 2022

Nickel Allergy In Orthodontic, Chao-Hsuan Sun, Li-Hsiang Lin, Bilin Spring Hsu, Sheng-Yang Lee

Taiwanese Journal of Orthodontics

Nickel containing appliances are widely used in orthodontic practice. Nickel allergy is a type of delayed hypersensitivity, sign and symptom wouldn’t become obvious 24 ~ 72 hrs after initial nickel contact, making first hand diagnosis and treatment difficult. The aim of this article is to review diagnosis and prevention options for managing nickel allergy.

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Case Report: Treatment For Class Ii Division 1 With Unilateral Scissors Bite, Wan-Chen Yu, Chia-Lung Hsu, Jian-Hong Yu, Hsien-Hsiung Chiang Aug 2022

Case Report: Treatment For Class Ii Division 1 With Unilateral Scissors Bite, Wan-Chen Yu, Chia-Lung Hsu, Jian-Hong Yu, Hsien-Hsiung Chiang

Taiwanese Journal of Orthodontics

A young male (14 years old) came to our clinic with a chief complaint of maxillary protrusion and not being able to chew food well with his right posterior teeth. Clinical examination revealed Class II division 1 malocclusion with unilateral scissors bite on the right side. With successful molar upright on the right lower arch by bracket upside-down, adding crown buccal torque on the archwire and ISW(Improved Super-elastic Ti-Ni alloy wire, developed by Tokyo Medical and Dental University) Expansion Arch technique, scissors bite was corrected quickly. Treatment was completed within 15 months and a desirable occlusion after the active treatment …

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Paradigm Shift In Class Iii Treatment With Mini-Implant Anchorage, Yi-Hung Shih, Ya-Hui Yang, Chi-Wen Chen, Joung-Lin Liao, Shin-Fu Chang Aug 2022

Paradigm Shift In Class Iii Treatment With Mini-Implant Anchorage, Yi-Hung Shih, Ya-Hui Yang, Chi-Wen Chen, Joung-Lin Liao, Shin-Fu Chang

Taiwanese Journal of Orthodontics

Mini-implant anchorage has been proven to be an effective therapeutic strategy in treating various kinds of malocclusions. The most common position for mini-implant anchorage is on the upper posterior area. It is not only because the clinical requirements in anchorage reinforcement in the upper arch but also because of the more favorable anatomical situations of attached gingiva and surrounding movable mucosa. The previous use of mini-implant anchorage in the lower posterior area are either interdental miniscrews or exo-dentitional miniplate. The interdental miniscrews are primarily for maximal anterior retraction and vertical control. It is more comfortable for the operator to insert …

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The Orthodontic Consideration And Treatment In Patients With Missing Maxillary Incisors, Pey-Shyuan Lin, Chun-Liang Kuo, Kai-Li Wang, Jhih-Wei Chen, Hui-Lin Chen, Yi-Hwa Liu Aug 2022

The Orthodontic Consideration And Treatment In Patients With Missing Maxillary Incisors, Pey-Shyuan Lin, Chun-Liang Kuo, Kai-Li Wang, Jhih-Wei Chen, Hui-Lin Chen, Yi-Hwa Liu

Taiwanese Journal of Orthodontics

When we notice missing maxillary incisors, how to restore the extraction site is a difficult decision. Usually, we restore this kind of tooth with conventional fixed partial denture or implant prosthesis. However, some literatures present another solution: tooth substitution with proximal tooth by orthodontic force. In this paper, we put together few cases treated in Chi-mei orthodontic department, and we also discover some problems in the process of the orthodontic treatment. Hence, if we meet a case alike to these, the experiences we had can help to improve the orthodontic results.

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The Regulation Of Mmp-3 Upon Mechanical Stimulation In Bone Cells, Shu-Chun Tsai, Hui-Jen Tsai, Chu-Yin Weng, Wen-Pei Wong, Pei-Chuan Hung, Chih-Ching Liao, Yi-Jane Chen, Chung-Chen Jane Yao Aug 2022

The Regulation Of Mmp-3 Upon Mechanical Stimulation In Bone Cells, Shu-Chun Tsai, Hui-Jen Tsai, Chu-Yin Weng, Wen-Pei Wong, Pei-Chuan Hung, Chih-Ching Liao, Yi-Jane Chen, Chung-Chen Jane Yao

Taiwanese Journal of Orthodontics

During orthodontic tooth movement, bone remodeling is induced by mechanical stimulation. The mechanical regulation to stimulate the activities of osteoblasts and osteoclasts is a focus of bone studies, which also got more attention in orthodontics recently. Members of matrix metalloproteinase family (MMP) were found to be closely related to the bone remodeling during orthodontic treatment. Some studies proposed that the matrix metalloproteinase-3 (MMP-3) is related to bone resorption because the gene expression of MMP-3 was increased by orthodontic force at the compression site. Therefore, MMP-3 likely participated in bone resorption. We reviewed the studies related to the regulation of MMP-3 …

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Clinical Management Of Impacted Upper Canines From A To Z – Literature Review, Heng-Ming Mark Chang, Wen-Lieh Lin Aug 2022

Clinical Management Of Impacted Upper Canines From A To Z – Literature Review, Heng-Ming Mark Chang, Wen-Lieh Lin

Taiwanese Journal of Orthodontics

The incidence of upper canine impaction is from 1% to 3%, which is the second commonest impaction tooth in the month. With regard to this impacted canine, there are many aspects can be discussed from clinical assessment, diagnosis, treatment planning, surgical exposure technique, forced eruption method, retention and so on. This review article will address on these issues according to current literature and help clinicians to have a clear picture on the impacted upper canine.

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The Eighteen-Month Follow-Up Of Orthodontic Treatment Outcome With Bony Anchorage For A Severe Skeletal Class Ii Anterior Openbite Malocclusion - A Case Report, John Siu-Lung Tse, Cheng-Tsung Huang, Jenny Zwei-Chieng Chang, Eddie Hsiang-Hua Lai, Chung-Chen Jane Yao, Yi-Jane Chen Aug 2022

The Eighteen-Month Follow-Up Of Orthodontic Treatment Outcome With Bony Anchorage For A Severe Skeletal Class Ii Anterior Openbite Malocclusion - A Case Report, John Siu-Lung Tse, Cheng-Tsung Huang, Jenny Zwei-Chieng Chang, Eddie Hsiang-Hua Lai, Chung-Chen Jane Yao, Yi-Jane Chen

Taiwanese Journal of Orthodontics

The etiology of skeletal Class II malocclusion may include excessive growth of the maxilla, deficient growth of the mandible, or the combination of both. Oral habits such as mouth breathing, tongue thrusting, and thumb sucking can cause anterior open bite. Meanwhile, the vertical overgrowth of posterior dentoalveoalr process may be another contributory factor. The treatment options for skeletal Class II malocclusion with anterior open bite should be planned according to the discrepancy of the inter-jaw relationship. If the discrepancy is mild or moderate, non-surgical approach with conventional orthodontic treatment will suit this situation. However, orthodontic treatment combined with orthognathic surgery …

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Correction Of Posterior Buccal Crossbite With Bionator, Yen-Chuang Lin, Bilin Spring Hsu, Sheng-Yang Lee Aug 2022

Correction Of Posterior Buccal Crossbite With Bionator, Yen-Chuang Lin, Bilin Spring Hsu, Sheng-Yang Lee

Taiwanese Journal of Orthodontics

Functional appliance is often used for treatment of growing patients. If we can understand the device design and treatment mechanism of functional appliance, it can be applied to adult patients. The following text would review the functional matrix theory and composition of functional appliance, especially for the bionator. Finally, a case will be reported.

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The Orthodontic Treatment In The Patient Of Angle’S Class Ii Relationship With Mandible Retrusion By Using Multiple Functional Appliances, Tzu-Yin Chen, Chun-Liang Kuo, Kai-Li Wang, Jhih-Wei Chen, Hui-Lin Chen Aug 2022

The Orthodontic Treatment In The Patient Of Angle’S Class Ii Relationship With Mandible Retrusion By Using Multiple Functional Appliances, Tzu-Yin Chen, Chun-Liang Kuo, Kai-Li Wang, Jhih-Wei Chen, Hui-Lin Chen

Taiwanese Journal of Orthodontics

The etiology of Angle’s Class II malocclusion are: 1.maxillary protrusion, 2.mandibular retrusion, 3.combination of both. The therapeutic methods of Angle’s Class II malocclusion with mandibular retrusion by using the functional appliance will correct neuromuscular dysfunction, remodeling of the glenoid fossa and enhancement of condyle growth by anterior positioning of mandible. In this case report will present a patient of Angle’s Class II malocclusion with mandibular retrusion. By using multiple functional appliances during active growth period to improve mandible forward positioned and the maxilla-mandible relation is altered. Then, combined with fixed orthodontic treatment, the convex profile and malocclusion is improved. Esthetics …

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Surgical-Orthodontic T Reatment Of Tmd Combined Skeletal Class Iii Malocclusion – Case Report, Hsin-Yi Lo, Ying-Hsin Lee, Lian-Ru Chen, Ming-Lun Hong, Kwong-Wa Li, Yong-Kie Wong, Jeng-Fen Liu Aug 2022

Surgical-Orthodontic T Reatment Of Tmd Combined Skeletal Class Iii Malocclusion – Case Report, Hsin-Yi Lo, Ying-Hsin Lee, Lian-Ru Chen, Ming-Lun Hong, Kwong-Wa Li, Yong-Kie Wong, Jeng-Fen Liu

Taiwanese Journal of Orthodontics

Many researches had been proved that the effect of intraoral vertical ramus osteotomy (IVRO) to relieve the symptoms of painful temporomandibular joint dysfunction syndrome was significant by repositioning of the condyle head anteriorly and inferiorly. The case report is a male patient who sought the dental advice for relief of TMJ pain when chewing and mouth opening at our OPD. The oral examination found clicking sound, disc displacement with reduction, mouth opening and chewing pain, anterior crossbite and class III malocclusion with mandibular prognathism. We decided to perform IVRO (modification of intraoral vertical ramus osteotomy) and internmaxillary fixation (IMF) to …

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Factorial Analyses In The Biomechcanical Effects Of The Orthodontic Nini-Implant, Chih-Yu Chen, Ting-Sheng Lin, Li-Wen Lin, Feng-Ye Tsai, Chen-Jung Yang Aug 2022

Factorial Analyses In The Biomechcanical Effects Of The Orthodontic Nini-Implant, Chih-Yu Chen, Ting-Sheng Lin, Li-Wen Lin, Feng-Ye Tsai, Chen-Jung Yang

Taiwanese Journal of Orthodontics

A stable mini-implant provides a splendid orthodontic anchorage, which leads a profound influence to the treatment course. This study used finite element method, with a molar and premolar on the posterior mandible by computerized simulation, to investigate the biomechanical effects of the orthodontic mini-implant. Factorial analyses were performed including the cortical bone thickness, the diameter of the mini-implant and angle of the orthodontic force. The results showed that the diameter of the mini-implant affected the stress distribution on the cortical bone. All parameters had significantly effects on the cancellous bone stresses. The force angle and the diameter of the mini-implant …

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Characteristics Of Syndromic Craniosynostosis And Its Contemporary Treatment, Ivy Tai-Chiew Hui, Ellen Wen-Ching Ko, Chiung-Shing Huang Aug 2022

Characteristics Of Syndromic Craniosynostosis And Its Contemporary Treatment, Ivy Tai-Chiew Hui, Ellen Wen-Ching Ko, Chiung-Shing Huang

Taiwanese Journal of Orthodontics

The main characteristics of craniosynostosis were premature fusion of cranial sutures with specific skull shapes. There are divided into nonsyndromic and syndromic craniosynostosis. Syndromic craniosynostosis (SCS) was an inherited congenital craniofacial disorder and approximately 15% of craniosynostosis had associated anomalies in the face and limbs. Crouzon syndrome, Apert syndrome, Pfeiffer syndrome and Jackson-Weiss syndrome were the examples of SCS. Increased intracranial pressure (IICP), decrease intracranial volume, corneal exposure, decrease upper airway space, compression of optic nerve and midface hypoplaisa were the indications of surgical intervention. Current treatment modalities such as traditional surgical methods, including monobloc and LeFort III osteotomies as …

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Interdisciplinary Approach To Correct Mandibular Prognathism With Missing Central Incisor — Case Report, Sam Sheng-Pin Hsu, Clement Cheng-Hui Lin, Hsin-Yi Hsieh, Emma Yuh-Jia Hsieh, Chiung-Shing Huang, Eric Jein-Wein Liou, Ellen Wen-Ching Ko, Yu-Fang Liao, Yu-Ray Chen Aug 2022

Interdisciplinary Approach To Correct Mandibular Prognathism With Missing Central Incisor — Case Report, Sam Sheng-Pin Hsu, Clement Cheng-Hui Lin, Hsin-Yi Hsieh, Emma Yuh-Jia Hsieh, Chiung-Shing Huang, Eric Jein-Wein Liou, Ellen Wen-Ching Ko, Yu-Fang Liao, Yu-Ray Chen

Taiwanese Journal of Orthodontics

A case of mandibular prognathism with facial asymmetry was presented. The missing left central incisor was previously restored with a compromising cantilever bridge. Interdisciplinary approach including orthodontics, orthognathic surgery, and prosthetic dentistry was performed and gave patient a better esthetic and functional result. Ways to achieve better esthetics, evaluation and possibility of surgery-first orthognathic approach, and other possible treatment options were discussed.

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Treatment Of Facial Asymmetry By Mini-Implants Combined With One-Jaw Surgery, Ya-Ting Wang, Kang-Yee Wang, Hau-Hueng Chang, Chung-Chen Jane Yao Aug 2022

Treatment Of Facial Asymmetry By Mini-Implants Combined With One-Jaw Surgery, Ya-Ting Wang, Kang-Yee Wang, Hau-Hueng Chang, Chung-Chen Jane Yao

Taiwanese Journal of Orthodontics

Facial asymmetry may originate from mandibular deviation combined with secondary maxillary compensation in vertical dimension, which can lead to occlusal plan canting. Two-jaw surgery would be an ideal choice for these cases in the past. Nowadays, using mini-implants to intrude elongated maxillary teeth to correct the occlusal plane canting could simplify the surgical plan into one-jaw surgery. In this case, a 30 y/o female was diagnosed with skeletal Class I malocclusion with mandibular deviation to left side combined with occlusal plane canting. The canted occlusal plane was corrected by intrusion of upper right posterior teeth with miniplate and minisrew first, …

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Soft And Hard Tissue Changes After Presurgical Orthodontics In Class Iii Patients, I-Ming Tsai, Hui-Ling Chen, Yu-Ching Wang Aug 2022

Soft And Hard Tissue Changes After Presurgical Orthodontics In Class Iii Patients, I-Ming Tsai, Hui-Ling Chen, Yu-Ching Wang

Taiwanese Journal of Orthodontics

The aims of this retrospective cephalometric study were to assess the results of presurgical treatment on the subjects presenting with Class III malocclusion and to evaluate the correlation between soft and hard tissues. Initial (T0) and presurgical (T1) lateral cephalograms of 17 patients were examined. Mean age was 20.4 years initially. Subjects were treated with presurgical orthodontic treatment. Initial and presurgical variables were compared using paired t-test, and the relationship of soft and hard tissue variables was studied using Pearson correlation coefficient and linear regression equation. Significant changes were found in hard (U1E 1.4±2.6 mm, FMIA -6.9±6.8°, IMPA 5.8±6.5°, L1E …

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Orthognathic Surgery For Rehabilitation Of Adult Patient With Complicated Dentofacial Deformities — Case Report, Emma Yuh-Jia Hsieh, Ellen Wen-Ching Ko Aug 2022

Orthognathic Surgery For Rehabilitation Of Adult Patient With Complicated Dentofacial Deformities — Case Report, Emma Yuh-Jia Hsieh, Ellen Wen-Ching Ko

Taiwanese Journal of Orthodontics

A case report is presented with a 32-year-old female patient who had received bilateral posterior segmental ostectomy of maxilla to create inter-occlusal space for mandibular removable partial denture 4 years before orthodontic first visit. She came for treatment with a chief complaint of maxillary protrusion. The patient presented skeletal Class II malocclusion with maxillary anterior vertical excess, occlusal plane cant with severe vertical discrepancy of maxillary arch , multiple missing teeth, as well as ill-fitted fixed partial dentures. For correcting of facial esthetics and severe skeletal discrepancies, the patient underwent surgical orthodontics with maxillary Le Fort I 3-pieces ostectomy, mandibular …

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A Systemic Review Of Oral Phenomenon And Orthodontic Treatment In Patients With Cleidocranial Dysplasia, Kuo-Hao Lin, Shouh-Sin Kuang, Cheng-Hsien Wu, Tzu-Ying Wu Aug 2022

A Systemic Review Of Oral Phenomenon And Orthodontic Treatment In Patients With Cleidocranial Dysplasia, Kuo-Hao Lin, Shouh-Sin Kuang, Cheng-Hsien Wu, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

Cleidocranio-dysplasia is an autosomal dominant disease. RUNX2(CBFA1) is the only gene known to be associated with CCD. The clinical characteristic of skeletal dysplasia including delayed or ectopic eruption of permanent teeth, multiple supernumanary teeth, delayed resorption of primary root, dilacerations of permanent and supernumanary teeth, malocclusion with skeletal discrepancy. Diagnosis of CCD in dental clinic due to oral phenomenens happened usually. This paper would systemically reviewed the genetic and pathological mechanism of CCD.

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The Raison D’Etre Of The Mandibular Condyle, Huei-Mei Tsai Aug 2022

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 …

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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 Aug 2022

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.

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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 Aug 2022

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 …

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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 Aug 2022

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.

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Clinical Managements For Missing Maxillary Lateral Incisors – Literature Review, Chih-Yu Lin, Li-Hsiang Lin Aug 2022

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.

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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 Aug 2022

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.

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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 Aug 2022

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 …

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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 Aug 2022

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.

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