Medicine and Health Sciences Commons^™

The Strategy For Uprighting A Deep Horizontally Impacted Mandibular Second Molar, Hui-Wen Cheng, Chia-Tze Kao, Chih-Chen Chou, Ching-Yi Tsai, Hsing-Yeh Shen, Wen Ken Tai

Taiwanese Journal of Orthodontics

An orthodontic treatment that involves uprighting of deep horizontally impacted mandibular second molars (MM2) can be a challenging procedure. This case report demonstrates an approach to correct an impacted MM2, specifically in a 21-year-old male patient who presented with a Class II division 2 malocclusion, deep bite, and bilateral maxillary second molars with buccal crossbite. Correction of the impacted MM2 had been achieved using a ramus temporary anchorage device (TAD), which applied pulling and extruding forces along with an uprighting moment. Addressing the deep bite required proclination of incisors, utilization of an intrusion arch for maxillary incisors, and implementation of …

Improved Superelastic Wire (Isw) Treatment For Skeletal Class Iii Malocclusion With Anterior Open Bite And Missing Upper Left Incisor, Chun-Yi Huang, Yung-Hui Chen, Szu-Ying Yu, Hui Tseng, Jian-Hong Yu

Taiwanese Journal of Orthodontics

This article reports the orthodontic treatment using improved superelastic Ti-Ni alloy wire for a non-surgical case of skeletal Class III combined with anterior open bite, posterior crossbite, and missing the tooth 21. The treatment processes included space re-opening for the tooth 21 to facilitate replacement with prosthesis, the application of Class III elastics combined with anterior retraction and active tie-back for space closure. Meanwhile, adjustment of bracket position and wire bending were used for detailing and finishing. Interdisciplinary teamwork with orthognathic surgery and prosthetic expertise enhanced rehabilitation of the tooth 21. After a 38-month treatment, the patient was very satisfied …

An Overview Of Patient Preference When Choosing A Dentist And Orthodontist, Chi Yuo Tee, Johnson Hsin-Chung Cheng, Daniel De-Shing Chen, Chi-Yang Tsai, Od Bayarsaikhan

Taiwanese Journal of Orthodontics

Purpose: The purpose of this study is to provide a better understanding to dentists and orthodontists about patient’s preferences when they are choosing their dentist.

Method: The articles from this study were identified in PubMed, ResearchGate, and ScienceDirect databases. Based on the obtained articles, we classify patient preferences into clinical settings, dentist and orthodontic factors, administration system, and the impact of using social media networks for dental treatment marketing. The inclusion criteria for this literature review includes the articles that related to the topic, published from 2008 till 2023, written in English from PubMed, ResearchGate, and ScienceDirect. The exclusion criteria …

Agenesis Of Mandibular Incisors And Orthodontic Management, S. Lalithapriya, N. Kurunji Kumaran

Taiwanese Journal of Orthodontics

Background: Patients with mandibular incisors agenesis often seek treatment to address both aesthetic and functional concerns. The clinical examination and management for these patients may differ from our standard diagnosis and treatment planning protocols.

Objective: This article aimed to collect and review relevant literatures, discussing the necessity for specific attention to the quantity and location of missing mandibular incisors.

Method and results: An electronic literature search was conducted in PubMed and the Cochrane Central Library, focusing on specific objectives. Relevant articles were identified, resulting in a total of 64 articles after duplicates and irrelevant sources were removed.

Discussion and conclusion: …

Load-Deflection Behaviors Of Superelastic Niti Wires Using Two Bending Test Methods Including Passive Self-Ligating Brackets, Hsiu-Ming Hsu, Kuan-Chung Chen, Chen-Jung Chang, Tzer-Min Lee, Jia-Kuang Liu

Taiwanese Journal of Orthodontics

Purpose: Most load-deflection curves of NiTi wires were obtained by three-point test methods, but only few comparative studies had been reported about load-deflection behaviors of superelastic NiTi wires using three-bracket bending test mothod. The purpose of this study was to compare load-deflection behavior of different superelastic NiTi wires using two different bending test including passive self-ligating brackets.

Materials and methods: The study comprised four groups of superelastic NiTi wires: 0.014-inch ThermoNiTi, 0.014-inch CuNiTi, 0.016 x 0.025-inch ThermoNiTi and 0.016 x 0.025-inch 27°C CuNiTi. Each group had 10 pieces of wires to be tested. Then, three-point bending test and three-bracket bending …

Cortical Bone Thickness For Potential Anchorage Placement In Unilateral Cleft Lip And Palate Patients, Supeepan Boonyarattanasoontorn, Prajak Jariyapongpaiboon

Taiwanese Journal of Orthodontics

Purpose: The aim of this study was to measure the cortical bone thickness of the infrazygomatic crest area in individuals with non-syndromic unilateral cleft lip and palate (UCLP) with maxillary expansion using cone-beam computed tomography (CBCT). Materials and Methods: CBCT scans were obtained from 12 Thai non-syndromic UCLP patients with an average age of 14 years. Five horizontal and 8 vertical reference planes were drawn at the infrazygomatic crest area, and the cortical bone thickness was measured at 40 intersection points on the cleft and non-cleft sides. Results: The mean cortical bone thickness of the 40 measured points was 1.25 …

Successful Orthodontic Treatment Of Bimaxillary Protrusion Case With An Ankylosed Incisor—A Case Report And Decision-Making Process, Shu-Cheng Lin, Szu-Ching Lee, Yi-Ching Ho, Kai-Hsiang Chuang, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

The treatment of ankylosed incisor is challenging for orthodontists, necessitating accurate diagnosis, well-considered treatment planning, and close collaboration among interdisciplinary teams to achieve favorable esthetic and periodontal outcomes. For ankylosed cases, accurate diagnosis depends on detailed clinical examination and 3D radiographic images. This case report described the treatment of a bimaxillary protrusive female with an ankylosed maxillary left central incisor. The decision regarding treatment was based on the severity of dental ankylosis and replacement root resorption. Each treatment plan comes with its own set of advantages and disadvantages. In this case, the decoronation treatment plan and prosthesis was implemented, resulting …

Orthodontic And Surgical Treatment Of A Patient With Cleidocranial Dysplasia Syndrome: Introducing A New Appliance For Traction Of Multiple Impacted Teeth, Sanaz Soheilifar, Sepideh Soheilifar, Sara Soheilifar, Navid Naghdi

Taiwanese Journal of Orthodontics

Cleidocranial Dysplasia (CCD) is a syndrome that causes skeletal growth disturbances. The impaction of many permanent teeth and several supernumerary teeth are among the dental problems of patients with this syndrome. This patient was a 14 y/o girl with CCD syndrome. She was skeletal Cl III with reverse overjet; many impacted teeth, and several supernumerary teeth. Orthodontic treatment was done in two stages. In the first stage, supernumerary anterior teeth were extracted, and the impacted teeth were exposed for traction. In the second stage, posterior supernumerary teeth were removed, and upper canines and posterior impacted teeth were exposed for forced …

A Coronectomy And Orthodontic Protraction Of An Impacted Lower Third Molar Compressed To The Inferior Alveolar Nerve: A Case Report, Johnson Hsin-Chung Cheng, Daniel De-Shing Chen, Bou-Yue Peng, Pei-Hsuan Chen

Taiwanese Journal of Orthodontics

Background: Neurological damage may occur during a third molar extraction procedure when the tooth root is near the mandibular canal. Although the incidence of this complication is low, a great range of variability has been reported in the literature. Several methods to reduce or eliminate this complication have been proposed, such as orthodontic-assisted extraction, extraction of the second molar, or an intentional odontectomy. Objective: The objective of this case report is to present a low risk extraction procedure: a coronectomy with forced eruption (COFE) to avoid potential neural damage when removal of lower wisdom tooth compressing inferior alveolar nerve in …

Non-Extraction Orthodontics In Severe Open Bite With Disc Plication Surgery Of The Temporomandibular Joint, Jessica Chia-Yi Wang, Meng-Yen Chen, Kuan-Yu Lin, Tung-Yiu Wong, Chen-Jung Chang

Taiwanese Journal of Orthodontics

Open bite malocclusion is among the most challenging orthodontic deformities to correct. Among the etiological factors of anterior open-bite, degenerative change in temporomandibular joints (TMJs) is the most difficult condition to manage. The most appropriate treatment modality for TMJ disorder with disc displacement remains controversal. Disc repositioning surgery is a treatment option when conservative treatment has failed to resolve symptoms. We presented a patient had history of gradual bite opening associated with joint stiffness and clicking. She received occlusal splint therapy for more than 10 years, and the occlusion was stable for 1 year before orthodontic treatment was initiated. Based …

Correlation Of Symphyseal Angle And Various Skeletal Patterns In Skeletal Class I Malocclusion, Dipankar Shrestha, Jyoti Dhakal, Rabindra Man Shrestha, Asal Acharya, Utsav Gautam

Taiwanese Journal of Orthodontics

Introduction: Skeletal growth pattern is an important parameter used in orthodontics for diagnosis and treatment planning. Lateral cephalogram is commonly used to evaluate skeletal growth pattern. Orthopantamogram (OPG) can also be used to evaluate skeletal growth pattern with parameters like gonial angle and symphyseal angle (SA). This study deals with symphyseal angle and its correlation with skeletal growth patterns. Objective: To correlate symphyseal angle with different skeletal growth patterns in skeletal Class I sample. Materials and Methods: The study was a cross-sectional, observational study including 60 patients of age 15 - 49 years with skeletal Class I pattern selected from …