ORTHODONTIC TRACTION OF IMPACTED POSTERIOR TEETH : CASE REPORTS

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Journal of the Korean Academy of Pediatric Dentistry 2009;36(4):613-618.
Published online November 30, 2009.

ORTHODONTIC TRACTION OF IMPACTED POSTERIOR TEETH : CASE REPORTS

한림대학교 성심병원 소아치과

매복 구치부 치아의 교정적 이동 : 증례 보고

맹유진, 오소희

한림대학교 성심병원 소아치과

Correspondence: ,

Received: 21 July 2009 • Accepted: 10 November 2009

Abstract

Impacted molars are not usual with the prevalence rate of less than 1%, however problems such as infraocclusion, extrusion of the opposite tooth and lack of space are caused. If molars are impacted, radiographic check-up and observations are needed as they play an important role in skeletal development and mastication. Causes of impaction are underdevelopment of roots, supernumerary teeth, cysts, odontomas, ankylosis and etc. In our first case, we present impacted molar which was surgically exposed and orthodontically traded. As the developmental state of the root was less than half at first visit, we observed until the root was 2/3 in its length and traction was carried out. The second case is orthodontic traded molar with compleate enucleation of the existing cysts. When trading impacted molars, direct bonding of attachments to the tooth and light continuous forces are recommended so as to ankylosis, external absorption and periodontal attachment loss avoid. Fixed appliances tract the teeth on arch and obtain eruption spaces without patient's cooperation. We report surgically exposed and orthodontically traded molars which resulted in good occlusion and patients satisfaction.

Key Words: Impacted teeth, Orthodontic traction, Cyst