齒顎矯正協會-TJO

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Current Issue

Review Article

Vol.30-3-1 September 2018

Effect of Home Bleaching Agents on the Surface Corrosion of Stainless Steel Orthodontic Brackets

Tzu-Hsin Lee

This in vitro study evaluates the home bleaching treatment effect on the surface corrosion of stainless steel orthodontic brackets.
Review Article

Vol.30-3-2 September 2018

Orthodontic Correction of Class II Division 2 Malocclusion

Kun-Feng Lee

Class II division 2 malocclusion has low incidence rate of only 1% in Taiwan. The criteria of diagnosis and treatment consideration is more challenging as compared to other types of malocclusions. The consideration of orthodontic biomechanics could be sophisticated in facing the correction of the molar relationship and the angulation of the anterior teeth. This article discusses the clinical diagnosis and treatment mechanics of Class II division 2 malocclusion.
Review Article

Vol.30-3-3 September 2018

An Overview of Digital Intraoral Scanners: Past, Present and Future - From an Orthodontic Perspective

Chung-Chen Yao

Digital intraoral scanners(IOSs) have become the ongoing trend in contemporary digital orthodontics. This article aims to elaborate the past, present, and future of IOSs from an orthodontist’s perspective. We summarized the comparison between digital and conventional impression in literatures. Also, we discussed about the imaging principles and characteristics of different IOSs. Although unable to recommend the single best option, a checklist of consideration when choosing an IOSs was developed after trailing the mainstream commercial products. With technology revolution, embracing the IOSs may be essential for those interested in future digital orthodontic workflow. 
Review Article

Vol.30-3-4 September 2018

Clinical Use of Contemporary Clear Aligner Therapy

Chia-Tze Kao

Clear aligner therapy (CAT) is an increasing popular alternative to conventional bracket therapy. This review summarized contemporary data regarding the history of CAT. The information regarding the advantages and disadvantages of CAT, biomechanical force and biological considerations, controlling orthodontic tooth movement (OTM) would be discussed in this review. The CAT is well accepted for their esthetics, comfort, good care of oral hygiene and periodontal status and suitable for interdisciplinary dental treatment. However, CAT was also considered as difficult compliance for the patients, uneasy to be handled by clinicians, unprecise root movement, difficult for the postoperative fixation in cases receiving orthognathic surgery, and high cost.
Case Report

Vol.30-3-5 September 2018

Surgical-orthodontic Treatment for a Patient with Skeletal Class III Deformity and Anterior Open Bite

Wei-Chih Hung

Anterior open bite is a complicated problem due to its multiple etiologies, including anatomical, environmental, and genetic factors. The complexity of skeletal class III deformity depends on the severity of bony discrepancy, especially with anterior open bite. Surgical-orthodontic treatment is often required for complete correction.
Case Report

Vol.30-3-6 September 2018

Use Improved Super-elastic Ti-Ni Alloy Wire to Correct Class II Division 2 Malocclusion with Unstable Mandibular Position

Yu-Cheng Lo

The case reported the use of improved super-elastic Ti-Ni alloy wire (ISW), which was developed by Tokyo Medical and Dental University, to correct a case of Angle Class II division 2 case with unstable mandibular position. An adult 28-year old women came to our clinic with a chief complaint of poor dental alignment. Clinical examination revealed a Class II division 2 malocclusion. The ISW was used to relieve the anterior deep bite and crowding. Intermaxillary elastics (IMEs) were also used to achieve a correct and stable mandibular position and solid interdigitation. The outcome indicated achievement in correction of arch coordination, space management and bite control. In this case, poor dental alignment was rapidly leveled by using ISW. ISW could provide an efficient multidimensional control of this particular malocclusion. After the treatment, the treatment goals were achieved and the patient was pleased with the treatment result.
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