Orthodontics and Orthodontology Commons^™

Orthodontic Correction Of Transposed Maxillary Canine And First Premolar In Mixed Dentition, Lan-Tien Lin, Yi-Min Liu, Yuen-Yung Tsang

Taiwanese Journal of Orthodontics

Transposition is rare and occurred commonly on maxillary canine and premolar. To extract or not to extract, to correct or not to correct the dental transposition teeth, it’s a tough decision. A 12-year-old boy was referred for orthodontic correction because of bad alignment at upper dentition. His dental age was in late mixed dentition. Both upper deciduous canines were still retained. Left canine was buccally blocked-out, and first premolar was in palatal crossbite with the lower premolars. Panoramic film showed impacted upper right canine and transposed left canine and first premolar. The treatment duration took 3.5 years. The upper left …

To Do Or Not To Do? Slow Orthodontic Extrusion For Implant Site Development In Esthetic Zone At The Anterior Maxilla, Hui-Chen Tsai, Chung-Chen Jane Yao, Cheing-Meei Liu

Taiwanese Journal of Orthodontics

Slow orthodontic extrusion (SOE) for implant site development, was introduced in 1991. It has been more than 20 years since this treatment was applied in our clinical practice. In this paper, we investigate surgeon's expectation of SOE for special requirements of immediate implantation by a clinical case. We also review case reports/case series searched from PubMed and inspect the power of evidence of these reports from the integration of data collection, and try to define the value of SOE. If the SOE cannot eliminate at least one surgical procedure, we need to consider the necessity of SOE before implant surgery.

A Modified Surgery-First Approach For Mandibular Prognathism With Proclined Maxillary Incisor And Mandibular Spacing, Jutharath Chanruangvanich, Ellen Wen-Ching Ko, Ying-An Chen

Taiwanese Journal of Orthodontics

This case report describes the management of an adult patient presenting with a skeletal Class III malocclusion, mandibular protrusion, upper incisor proclination and mandibular arch spacing by a modified surgery-first approach. A 26-year-old man had skeletal Class III and dental Class III malocclusion with concave facial profile, midface deficiency and mandibular prognathism with chin deviation to left. His dental manifestation presented anterior crossbite, upper incisors proclination and spacing in his mandibular arch. Treatment was performed with a modified surgery-first approach, which included a short presurgical alignment phase. In the maxilla, the significant maxillary crowding was relieved by 14 and 24 …

Orthodontic Treatment Of Class Ii Malocclusion With Single Maxillary Incisor, Chien-Cheng Chen, Yi-Horng Chen

Taiwanese Journal of Orthodontics

Orthodontic treatment of a Class II malocclusion case with single maxillary central incisor was presented in the case report. The treatment plan consisted of removing one maxillary central incisor instead of premolars. Bilateral maxillary lateral incisors were mesialized for space closure and substitution for maxillary central incisors. The morphology of maxillary lateral incisors was modified to mimic the maxillary central incisors. After treatment, both occlusion and esthetics was improved, and the patient was satisfied with the results.

A Comprehensive Diagnostic System For Orthodontists- Beyond Angle’S Classification, Ib Leth Nielsen

Taiwanese Journal of Orthodontics

Traditionally orthodontists have used the classification system developed by Edward H. Angle in 1900 to describe the malocclusion of an orthodontic patient. This classification is very limited with respect to the information it provides and should be replaced by a more detailed and inclusive description of a patient’s malocclusion as well as the underlying biology. In this review article we propose a new technique that ensures all pertinent information gets considered and we suggest a systematic approach to a more differentiated orthodontic diagnosis. Our approach divides the diagnosis into clearly defined categories that bring together the clinical findings into a …

Mandibular Molar Protraction For Edentulous Space Closure: A Systematic Review, Yueh-Tse Lee, Proudchompoo Paungmalit, Eric Jein-Wein Liou

Taiwanese Journal of Orthodontics

Objective: Orthodontic molar protraction into the edentulous space is a treatment option for patients with missing mandibular molars or premolars. Space closure by moving the molars mesially into edentulous ridge is difficult, especially in the mandible. This systematic review aimed to evaluate the dental and periodontal changes after mandibular molar protraction into an edentulous ridge. Material and Methods: Literature search was conducted using PubMed, Medline (Ovid), Cochrane Library, Web of Science, and Scopus until September 2019 limited to English publications. Specific inclusion and exclusion criteria were extracted and analyzed. Study quality was objectively assessed. Results: In total, 490 studies were …

Factors Influencing Fixed Orthodontic Treatmentoutcomes In A University Dental Clinic, Zhan Yan Fang, Sneha Ravindranath, Allan Pau

Taiwanese Journal of Orthodontics

Objective: To assess the orthodontic treatment outcomes in a university dental clinic and to determine factors associated with the treatment outcomes. Methods and materials: Firstly, the records of all patients who have completed fixed orthodontic treatment from 2012 to 2017 were identified and included in the study. Age at start of treatment, gender, decayed, missing filled teeth (DMFT), malocclusion classification, type of appliance used and type of treatment (extraction or non-extraction) were recorded. The pre-treatment and post-treatment study models were assessed by the Peer Assessment Rating (PAR) Index. The treatment outcomes were tabulated in a nomogram to show the proportions …

Management Of Congenital Missing In Bilateral Mandibular Incisors, Yun-Ting Huang, Chien-Wei Chao, Po-Yu Yang, Chia-Tze Kao

Taiwanese Journal of Orthodontics

This case report described the management of congenital missing bilateral mandibular central incisors in a 16 years-old female patient who was diagnosed as Angle’s Class I molar malocclusion, canine Class II relationship by a treatment plan of orthodontic space regain. The options of fixed bridge, removable partial denture or dental implants to replace the missing teeth were well explained to the patient by prosthodontic consultation. After the orthodontic alignment, the treatment results demonstrated that the initial profile of the patient was maintained, the missing teeth was later replaced by removable partial denture. The interdisciplinary therapy between orthodontics and prosthodontics should …

The Orthodontic Treatment Of Class Iii Malocclusion With Anterior Cross Bite And Severe Deep Bite, Chieh Yang, Yu-Chuan Tseng

Taiwanese Journal of Orthodontics

This 22-year-old female presents with skeletal Class III malocclusion, complicated by anterior cross bite, deep bite, and congenital missing of bilateral mandibular second premolars. The treatment modality was fullmouth fixed edgewise appliances. A favorable result of ideal overbite and overjet and closure of bilateral spaces of missing teeth were achieved. The patient was satisfied the improvement of function and esthetics after treatment.

Judged Facial Attractiveness Of Extraction And Non-Extraction Orthodontic Treatment In Repose And Smiling, Nicolette R. Chahin

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background and Objectives: More so than ever, the public is becoming exceedingly aware of esthetics, and will evaluate their treatment outcome based upon the improvement to their smile and overall enhancement of their facial appearance. There exists a debate in orthodontics, as to whether or not extractions harm the profile. The aim of this study was to determine if facial attractiveness is harmed in subjects having completed orthodontic treatment involving the extraction of four premolars both in repose and smiling when viewed in lateral profile. Another objective is to identify any impact upper incisor retraction has on facial attractiveness. …

Comparison Of Patient Factors Influencing The Selection Of An Orthodontist, General Dentist, Or Direct-To-Consumer Aligners For Orthodontic Treatment, Jeffrey C. Olson

Theses and Dissertations

Purpose: To evaluate the factors that influence potential orthodontic patients choosing between an orthodontist, general dentist, and direct-to-consumer (DTC) aligners for their treatment, and to determine the demand for each provider type.

Methods: An electronic survey was administered to 250 individuals among the general population of adults in the United States. Questions were designed to determine the respondent’s level of interest in pursuing orthodontic treatment with each provider type, evaluate their current level of knowledge concerning provider options, and identify factors influencing their selection. Pearson’s chi-squared test and ANOVA were used to evaluate the factors influencing patients in …

Frictional Properties Of Novel Bracket Systems: An In-Vitro Study, Stephen M. Haverkos

Theses and Dissertations

Orthodontic brackets undergo resistance during sliding that includes classical friction, binding, and notching. Current bracket systems are hampered by these challenging forces. As a result, the clinician usually needs to apply additional forces to overcome the resistance which increases the risk of root resorption and discomfort for the patient. This study evaluated frictional properties of a novel bracket that had polytetrafluoroethylene (Teflon™) coated rollers in its design. Five types of brackets (n = 10, each), including a passive self-ligating bracket, a traditional ligated bracket, a three-dimensionally printed direct metal laser sintering (DMLS) bracket with and without Teflon™ rollers, and computer …

Let’S Face It: The Effect Of Orthognathic Surgery On Facial Recognition Algorithm Analysis, Carolyn Bradford Dragon

Theses and Dissertations

Aim: To evaluate the ability of a publicly available facial recognition application program interface (API) to calculate similarity scores for pre- and post-surgical photographs of patients undergoing orthognathic surgeries. Our primary objective was to identify which surgical procedure(s) had the greatest effect(s) on similarity score.

Methods: Standard treatment progress photographs for 25 retrospectively identified, orthodontic-orthognathic patients were analyzed using the API to calculate similarity scores between the pre- and post-surgical photographs. Photographs from two pre-surgical timepoints were compared as controls. Both relaxed and smiling photographs were included in the study to assess for the added impact of facial pose on …

The Efficacy Of A Fluoride-Containing Orthodontic Primer In Preventing Demineralization, Alyssa G. Ricci

Theses and Dissertations

Purpose: To evaluate the efficacy of a fluoride-containing orthodontic primer in preventing demineralization adjacent to brackets and compare the quality of enamel on tooth surfaces that received interproximal reduction (IPR).

Methods: Patients at the VCU Orthodontic clinic who consented to orthodontic treatment involving extraction of at least 2 premolars were recruited to this pilot clinical study. Brackets were bonded to premolars using one of two primers, fluoride-containing experimental or control. IPR was also performed, and the experimental primer was applied to randomly selected teeth. Extracted teeth were analyzed visually for the presence of white spot lesions (WSLs). Micro-CT analyses were …