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Orthodontics and Orthodontology Commons

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Segmental Maxillomandibular Rotational Advancement (Smmra) In The Treatment Of Adult Patients With Severe Obstructive Sleep Apnea, Hsien-Ching Hung, Ya-Ying Teng, Yuh-Jia Hsieh, Yi-Chin Wang, Yu-Chih Wang 2021 Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taoyuan, Taiwan

Segmental Maxillomandibular Rotational Advancement (Smmra) In The Treatment Of Adult Patients With Severe Obstructive Sleep Apnea, Hsien-Ching Hung, Ya-Ying Teng, Yuh-Jia Hsieh, Yi-Chin Wang, Yu-Chih Wang

Taiwanese Journal of Orthodontics

Obstructive sleep apnea (OSA) occurs as an increased collapsibility of the upper airway during sleep, which threatens health and quality of life. Asian men with greater severity of OSA presents less obese and are connected with craniofacial abnormalities. Although the traditional maxillomandibular advancement (MMA) had the comparable effectiveness to the continuous positive airway pressure therapy, the midfacial esthetics might be compromised in Asian individuals. The modified MMA procedure was proposed to balance the esthetic demands and improvement of OSA symptoms. The case report showed a 25-year-old man presented with a diagnosis of severe OSA. The pretreatment Apnea Hypopnea Index (AHI ...


Protraction Of Maxillary Single Side Teeth For Substitution Of Missing Canine And 1st Molar, Wan-Jung Tsai, Szu-Ching Lee, Tzu-Ying Wu 2021 Taipei Veterans General Hospital, Taipei, Taiwan

Protraction Of Maxillary Single Side Teeth For Substitution Of Missing Canine And 1st Molar, Wan-Jung Tsai, Szu-Ching Lee, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

This case report presents a 24-year-old female with Class III skeletal pattern, anterior cross-bite, retroclined upper incisors with missing teeth (23, 26, 46). Upper dental midline was shifted to left for 3.5 mm due to early missing of tooth 23. Maxillary sinus pneumatization was noted at both sides.

Our treatment goal was to correct upper dental midline and anterior crossbite. On the other hand, the patient requested to close all of the extraction space and solve the problem of poor prognostic tooth 36. Therefore, we extracted tooth 14 for crowding relief and midline correction. Interdental screw was used to ...


Surgical Alteration Of Occlusal Plane Angulation Followed By Orthodontic Application Of Tads And Yin-Yang Arch Wire In Hypodivergent Prognathic Malocclusion, Chih-Hsun Hou, Yi-Min Liu, Chia-Yi Pan, Huei-Mei Tsai 2021 Dr. Su’s Teamwork Orthodontic Center, Taipei, Taiwan

Surgical Alteration Of Occlusal Plane Angulation Followed By Orthodontic Application Of Tads And Yin-Yang Arch Wire In Hypodivergent Prognathic Malocclusion, Chih-Hsun Hou, Yi-Min Liu, Chia-Yi Pan, Huei-Mei Tsai

Taiwanese Journal of Orthodontics

Surgical clockwise pitch rotation of the maxillo-mandibular complex could change the occlusal plane angulation and thereby open the bite. This procedure also increases the mandibular plane angle by forcing the lower face to turn backward and downward; it is the key to correct both skeletal and dental Class III malocclusions.

This case report presents a skeletal deformaty which primarily resulted from excessive transverse growth and reduced vertical growth in the midface and upper dentition. The counterclockwise growth rotation and excessive forward growth mandible aggravated the sagittal jaw bone discrepancy. The dental effect included canted maxillary occlusal plane and severe attrition ...


Indication And Timing Of Mucogingival Soft Tissue Augmentation Associated With Orthodontic Treatment, Shun-Jen Yu, Yi-Hao Lee, Aaron Yu-Jen Wu 2021 Department of Periodontics, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan

Indication And Timing Of Mucogingival Soft Tissue Augmentation Associated With Orthodontic Treatment, Shun-Jen Yu, Yi-Hao Lee, Aaron Yu-Jen Wu

Taiwanese Journal of Orthodontics

Gingiva recession is defined as an apical shift of the gingival margin caused by different conditions/pathologies. It is associated with clinical attachment loss. Several studies showed prevalence of gingiva recession in orthodontic patients. Some predisposing factors should be taken carefully considering the effect of the treatment modality. No consensus agreement was identified about the timing of the soft tissue augmentation intervention for orthodontic patients with the risk of gingival recession. However, several critical factors can guide the decision making to obtain the most preferred treatment option.

This article reviews the factors regarding the correlation of gingival margin alteration and ...


Perception Of And Attitudes On Malocclusion: A Literature Review, Gannaran Narangerel, Hsin-Chung Cheng, Bolormaa Sainbayar, Ganjargal Ganburged 2021 School of Dentistry/ College of Oral Medicine/ Taipei Medical University

Perception Of And Attitudes On Malocclusion: A Literature Review, Gannaran Narangerel, Hsin-Chung Cheng, Bolormaa Sainbayar, Ganjargal Ganburged

Taiwanese Journal of Orthodontics

Purpose: This study aimed to review published evidence on the perception of and attitude on malocclusion and to examine existing assessment tools and influencing factors.

Methods: PubMed, Cochrane Library, and Scopus databases, as well as electronic archives of the European Journal of Orthodontics, American Journal of Orthodontics and Dentofacial Orthopedics, and Angle Orthodontist, were searched to collect articles that compared perception differences between dental professionals and laypeople. Articles that investigated perceptions of dental professionals were excluded.

Results: The literature search identified 94 articles. A total of 31 suitable studies from 1970 to 2019 were finally considered in the review. Moreover ...


Could Cephalometric Landmarks Serve As Boundaries Of Maxillary Molar Distalization? A Comparison Between Two- And Three-Dimensional Assessments, Jhong-An Ye, Chi-Yu Tsai, Yi-Hao Lee, Yu-Jen Chang, Shiu-Shiung Lin, Jui-Pin Lai, Te-Ju Wu 2021 Department of Craniofacial Orthodontics, Department of Dentistry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan

Could Cephalometric Landmarks Serve As Boundaries Of Maxillary Molar Distalization? A Comparison Between Two- And Three-Dimensional Assessments, Jhong-An Ye, Chi-Yu Tsai, Yi-Hao Lee, Yu-Jen Chang, Shiu-Shiung Lin, Jui-Pin Lai, Te-Ju Wu

Taiwanese Journal of Orthodontics

Purpose: This study aimed at measuring the differences between the two-dimensional (2D) and three-dimensional (3D) radiographic boundaries for molar distalization, and their correlations for the amount of maxillary molar distalization.

Patients and Methods: A total of 250 consecutive adult patients were retrospectively reviewed. All the enrolled patients possessed Angle Class III malocclusion with moderate maxillary crowding and suitable for camouflage treatment. The spatial differences between the 2D and 3D radiographic boundaries were compared and measured. The correlation among the range of the distalization boundary and studied clinical variables were assessed by Pearson correlation and the linear regression to determine the ...


Effects Of Remote Digital Monitoring On Oral Hygiene Of Orthodontic Patients: A Prospective Study, Linda Sangalli, Fabio Savoldi, Domenico Dalessandri, Stefano Bonetti, Min Gu, Alberto Signoroni, Corrado Paganelli 2021 University of Kentucky

Effects Of Remote Digital Monitoring On Oral Hygiene Of Orthodontic Patients: A Prospective Study, Linda Sangalli, Fabio Savoldi, Domenico Dalessandri, Stefano Bonetti, Min Gu, Alberto Signoroni, Corrado Paganelli

Oral Health Science Graduate Research

BACKGROUND: Remote digital monitoring during orthodontic treatment can help patients in improving their oral hygiene performance and reducing the number of appointments due to emergency reasons, especially in time of COVID-19 pandemic where non-urgent appointments might be discouraged.

METHODS: Thirty patients scheduled to start an orthodontic treatment were divided into two groups of fifteen. Compared to controls, study group patients were provided with scan box and cheek retractor (Dental Monitoring®) and were instructed to take monthly intra-oral scans. Plaque Index (PI), Gingival Index (GI), and White Spot Lesions (WSL) were recorded for both groups at baseline (t0), every month ...


Effect Of Natural And Industrial Juices On Surface Microhardness Of Microhybrid And Nanohybrid Composites, Razieh Meshki, Hanieh Hoseini 2021 Department of Pediatric Dentistry, School of Dental Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

Effect Of Natural And Industrial Juices On Surface Microhardness Of Microhybrid And Nanohybrid Composites, Razieh Meshki, Hanieh Hoseini

Journal of Dentistry Indonesia

Numerous studies have been conducted on the effect of various beverages on the mechanical properties of tooth-colored materials, however, little is known about the effects of these materials on composites, particularly newer types such as nanocomposites.

Objectives: This study aimed to evaluate the surface microhardness of two types of composites, micro-hybrid (point 4) and nanohybrid (premise), after exposure to natural and industrial juices.

Methods: In this experimental study, 90 disc-shaped specimens with a thickness of 2 mm and a diameter of 10 mm were taken from two composites, micro-hybrid Point4 (Kerr) and nanohybrid premise (kerr) (two groups of 45). Then ...


Interrelationship Between Orthodontics And Implantology In Anterior Aesthetic Rehabilitation: A Case Report, Adailton de Morais Cavalcante, Renata Cordeiro Teixeira Medeiros, Danilo Lopes Ferreira Lima, Saulo Ellery Santos 2021 Professional Masters in Odontology from the University of Fortaleza, Ceará, Brazil, Specialist in Implantology by Faculdades Integradas de Patos, Paraíba, Brazil

Interrelationship Between Orthodontics And Implantology In Anterior Aesthetic Rehabilitation: A Case Report, Adailton De Morais Cavalcante, Renata Cordeiro Teixeira Medeiros, Danilo Lopes Ferreira Lima, Saulo Ellery Santos

Journal of Dentistry Indonesia

The rehabilitation of complex cases in the anterior region of the maxilla may require knowledge of several dental specialties. when dental involvement also causes bone and gingival involvement, management usually requires adjustment of gingival zenitis and bone graft to compensate for bone loss.

Objective: to discuss a case of previous orthodontic treatment for implant-prosthetic rehabilitation in the anterior region.

Case report: This case report describes a 40-year-old patient who came with the intention of extracting the tooth and installing a bridge. The implant-prosthetic treatment was performed after previous orthodontic treatment to adapt the gingiva and space.

Conclusion: The interrelationship of ...


Evaluation Of The Relationship Between Sella Turcica Bridging And Dental Anomalies, Ahmet Karaman, saadet cinarsoy cigerim Assistant Professor, Nourtzan Kechagia Research Assistant 2021 Department of Orthodontics, Faculty of Dentistry, Istanbul aydın University,İstanbul Turkey.

Evaluation Of The Relationship Between Sella Turcica Bridging And Dental Anomalies, Ahmet Karaman, Saadet Cinarsoy Cigerim Assistant Professor, Nourtzan Kechagia Research Assistant

Journal of Dentistry Indonesia

Objectives: This study aims to evaluate the relationship between the morphological variations of Sella Turcica (ST) and dental anomalies.

Methods: This study included 765 individuals between the ages of 13 and 35. ST morphology was examined in 3 groups as no calcification, partially calcified and completely calcified according to the interclinoid ligament (ICL) on lateral cephalometric films, and it was examined and evaluated in terms of its relationship to impacted canines (unilateral and bilateral), impacted teeth (except 3rd molars), root dilaceration, tooth deficiency (upper incisor lateral - lower and upper second premolar), supernumerary tooth and taurodontism.

Results: The rates of supernumerary ...


The Pharyngeal Airways Of Patients With Class Ii Malocclusion: A Cone-Beam Computed Tomography Analysis, Yazgı Ay Ünüvar, Fundagül Bilgiç Zortuk, Törün Özer, Kadir Beycan 2021 Department of Orthodontics, Faculty of Dentistry, Aydın Adnan Menderes University, Aydın 09010, Turkey

The Pharyngeal Airways Of Patients With Class Ii Malocclusion: A Cone-Beam Computed Tomography Analysis, Yazgı Ay Ünüvar, Fundagül Bilgiç Zortuk, Törün Özer, Kadir Beycan

Makara Journal of Health Research

Background: This study aimed to compare the minimum axial (min Ax) area and the volumes of the nasopharyngeal (NP) and oropharyngeal (OP) airways of patients with Class II malocclusion with different sagittal positions of the mandible and maxilla and patients with Class I malocclusion with normal jaw positions.

Methods: Airway areas and volumes of 51 patients with Class I malocclusion with normal maxillary and mandibular positions (0 < ANB < 4, 84 > SNA > 80, and 82 > SNB > 78) were compared with 21 patients with Class II malocclusion with normal maxillary and retrognathic mandibular positions (ANB>4, 84>SNA>80, and SNB4, SNA>84, and 82 ...


The Non-Surgical Treatment Of Class Ii Jaw Relation With Anterior Open Bite, Jyun-Long Wang, Yu-Chuan Tseng 2021 Kaohsiung Medical University

The Non-Surgical Treatment Of Class Ii Jaw Relation With Anterior Open Bite, Jyun-Long Wang, Yu-Chuan Tseng

Taiwanese Journal of Orthodontics

This 19-year-old female presents anterior open bite with skeletal Class II jaw relation. The treatment modality was non-surgical treatment with 4-bicuspid extraction and molar intrusion by full-mouth fixed edgewise appliances and temporary anchorage devices. A favorable result of ideal overbite/overjet and improvement of profile change were achieved. The patient was satisfied with the improvement of function and esthetics after treatment.


Hemimandibular Hyperplasia Treated By Orthognathic Surgery And Condylectomy In A Young Woman, Shin Pey Peng, Wen-Ching Ellen Ko, Cheng-Hui Lin, Chung-Yi Ho 2021 Chang Gung Memorial Hospital, Taipei, Taiwan.

Hemimandibular Hyperplasia Treated By Orthognathic Surgery And Condylectomy In A Young Woman, Shin Pey Peng, Wen-Ching Ellen Ko, Cheng-Hui Lin, Chung-Yi Ho

Taiwanese Journal of Orthodontics

Hemimandibular hyperplasia is a developmental asymmetry characterized by 3-dimensional enlargement in one half of the mandible. The malformation results in facial asymmetry, associated with tilted occlusal plane and a deviated chin to the contralateral side. These cause esthetic and progressive functional problems and need to be corrected without recurrence.

This report describes a 27-year-old woman presented with skeletal Class III malocclusion, occlusal plane cant and facial asymmetry. Radiographic films showed hyperplasia of half mandible and condyle on the left side. The condylar hyperactivity over left mandibular condyle was also confirmed by 99m-Tc bone scan. In order to correct her skeletal ...


Unilateral Premolar Crossbite And Atypical Extraction Case Treated With Clear Aligner, Ting-Fen Chang, Tzu-Ying Wu 2021 Taipei Veterans General Hospital, National Yang Ming Chiao Tung University

Unilateral Premolar Crossbite And Atypical Extraction Case Treated With Clear Aligner, Ting-Fen Chang, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

A unilateral buccal crossbites can be observed in adult patients with skeletal asymmetry and crowded dentition. This case report describes the orthodontic treatment with clear aligners for a 57-year-old female with chin deviation, lower dentition crowding and a unilateral complete buccal crossbite in right premolars. Mandibular single incisor extraction was planned to relieve crowding and the crossbite was resolved by intrusion of upper premolar and uprighting of lower premolar with clear aligners in combined with inter-arch elastic. The entire treatment was completed within 20 months and the treatment result showed good vertical control. This case report demonstrates that clear aligners ...


Surgery First Approach For Correcting A Skeletal Class Ii Malocclusion With Impinging Deep Bite, Yu-Ting Chiou, Tzu-Hang Hsu, Sang Heng Kok, Chung-Chen Jane Yao 2021 Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University. Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan

Surgery First Approach For Correcting A Skeletal Class Ii Malocclusion With Impinging Deep Bite, Yu-Ting Chiou, Tzu-Hang Hsu, Sang Heng Kok, Chung-Chen Jane Yao

Taiwanese Journal of Orthodontics

This case report illustrates a surgery-first treatment for surgical correction of Class II malocclusion. A 54- year-old female, presenting a chief complaint of deep bite and gum biting, came to seek for treatment. She had skeletal Class II and dental Class II malocclusion with 11 mm excessive overjet. Intraoral examination revealed large mandibular curve of Spee. Treatment was performed with a surgery-first approach, moving the dentition towards edge-to-edge bite, followed by extruding mandibular posterior teeth and normalizing the overjet and overbite. Finally, good interdigitation was achieved, as well as the improvement of masticatory function. The patient was satisfied with the ...


Reliability Of Panoramic Radiography In Assessing Gonial Angle Compared To Lateral Cephalogram In Patients With Class I Malocclusion, Ravi Ranjan Kumar Rajak, Rabindra Man Shrestha, Sushmit Koju 2021 Kantipur Dental College Teaching Hospital & Research Center

Reliability Of Panoramic Radiography In Assessing Gonial Angle Compared To Lateral Cephalogram In Patients With Class I Malocclusion, Ravi Ranjan Kumar Rajak, Rabindra Man Shrestha, Sushmit Koju

Taiwanese Journal of Orthodontics

Purpose: To investigate whether panoramic radiograph can be used as an alternative to lateral cephalogram for measuring the gonial angle in skeletal Class I patients. Patients and Methods: Panoramic radiograph and lateral cephalogram were collected from the pretreatment records of 100 patients of the age 16-30 years from the Department of Orthodontics. Radiographs were manually traced and the gonial angle was measured. Paired t-test was used to find the difference in mean gonial angle between the panoramic radiograph and lateral cephalogram. A simple regression analysis was performed to find the relationship between the gonial angles in two different radiographs. Results ...


Class Ii, Division 2 Malocclusion: What The Clinician Should Know About Treatment Of This Malocclusion (Part Ii), Ib Leth Nielsen 2021 University of California, San Francisco

Class Ii, Division 2 Malocclusion: What The Clinician Should Know About Treatment Of This Malocclusion (Part Ii), Ib Leth Nielsen

Taiwanese Journal of Orthodontics

Treatment of Class II, Div. 2 malocclusion can be a challenging undertaking for the orthodontists. The facial growth pattern and in particular the mandibular growth pattern can greatly influence the outcome of treatment and the long-term stability. In this article we will discuss factors determining the best time for treatment, the choice of treatment mechanics and the indications for extraction versus non-extraction. Criteria for treatment with two upper bicuspid extraction will be discussed and we provide 8 rules to consider for a successful outcome of treatment. Factors influencing long-term stability will be discussed and a protocol to improve stability will ...


Strategies For Treatment Of Bilateral Impacted High Canine–Lateral Incisor Transposition: A Stepwise Approach, Yun-Yun Wu, Fu-Hui Tsai, Jui-Hsien Yang 2021 Cathay General Hospital

Strategies For Treatment Of Bilateral Impacted High Canine–Lateral Incisor Transposition: A Stepwise Approach, Yun-Yun Wu, Fu-Hui Tsai, Jui-Hsien Yang

Taiwanese Journal of Orthodontics

To achieve a satisfactory outcome for transposed impacted teeth, the esthetic assessment and functional rehabilitation should be considered from both the orthodontic and periodontic perspective. In this case, a stepwise approach was used for both surgical uncovering and orthodontic treatment to manage the soft and hard tissue of transposed high canine. The case involved a girl aged 11 years and 7 months with bilateral high impacted canine–lateral incisor transposition. The impacted canines were first uncovered with the closed eruption technique and then moved horizontally to a normal sequence in the arch. Apically repositioned flap surgery was then performed, and ...


Management Of Unilateral Maxillary Canine Impaction, Maureen Antolis, Krisnawati E. Tarman 2021 Universitas Indonesia

Management Of Unilateral Maxillary Canine Impaction, Maureen Antolis, Krisnawati E. Tarman

Taiwanese Journal of Orthodontics

Maxillary canine is an essential part of teeth for smile esthetic and function. Orthodontic treatment for patient with impacted maxillary canine is considered to be more complex and require good biomechanical control during traction. This case report describes an orthodontic treatment of a 17-year old female patient with unilateral maxillary canine impaction on the left side. Orthodontic traction was used to guide the canine into normal occlusion. The orthodontic treatment had been completed within 19 months and successfully obtained favourable esthetic and stable occlusion.


Compare Two Methods Of Dental Arch Length Measurements On Digital Dental Models, Ying-Chen Chen, Carol Yi-Hsuan Chen, Ellen Wen-Ching Ko 2021 Department of Craniofacial Orthodontic, Chang Gung Memorial Hospital, Taoyuan, Taiwan

Compare Two Methods Of Dental Arch Length Measurements On Digital Dental Models, Ying-Chen Chen, Carol Yi-Hsuan Chen, Ellen Wen-Ching Ko

Taiwanese Journal of Orthodontics

Purpose: Accurate space discrepancy evaluation is important in treatment planning. Straight-line segments and brass wire method are the most common methods in arch length assessment. However, using segments causes underestimation, while more reliable brass wire method shows lower reproducibility. The aim of our study is (1) to compare the difference between conventional segmental distance method (SD) and a new method, ideal arch form (IA), and (2) to assess the reproducibility and reliability of two methods by means of digital models. Materials and methods: Thirty sets of digital dental models presented full permanent dentition and Angle’s Class III malocclusion were ...


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