III급 부정교합 치료 ; 치아의 후방이동 ; 초탄성 Ni-Ti alloy wire ; 발치 vs. 비발치
Abstract
Nonextraction camouflage treatment in mild Class III malocclusion is achieved by backward movement of the lower
dentition and forward movement of the upper dentition. Many camouflage treatment modalities have been used
for distal tipping and distal movement of mandibular posterior teeth. The amount of distal movement of mandibular
dentition can be improved in cases of severe crowding, even without the patient’s cooperation, by using
miniscrews for anchorage. However, miniscrew insertion may be unsuccessful, and it may contact the adjacent
root because of the distal movement of dentition. Distal tipping of mandibular dentition can be achieved using
multiloop edgewise archwires and intermaxillary elastics. However, the complexity of this wire design causes discomfort
to patients. Recently, a new treatment using improved superelastic NiTi wires (ISWs) and intermaxillary
elastics has been introduced. ISWs can deliver orthodontic force more effectively, and their use with molar
tip-back treatment has several advantages—this approach is effective, simple, and easy to use and reduces patient
discomfort. The aim of this study was to report a case of camouflage treatment using ISW with tip-back
and intermaxillary elastics for distal tipping of mandibular posterior dentition and to evaluate the effectiveness
of this treatment in a clinical setting.