근심경사 매복된 하악 제2대구치의 직립 치료
Orthodontic upright treatment for mesioangular impacted lower second molar
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초록
매복된 하악 제2대구치의 임상적 증상은 제3대구치의 매복 상황과 유사하나 발치가 주된 치료법인 제3대구치와 달리 저작기능의 회복, 대칭적인 안면 성장, 치열궁의 대칭성 유지, 안정된 교합관계 회복등을 위하여 가능한 직립하여야 한다는 점에서 치료 방법이 다르다. 매복 하악 제2대구치의 직립 치료시 치질의 노출 정도, 직립에 방해되는 제3대구치의 존재여부, 제2대구치의 예후, 대합치의 정출여부 등에 따라 치료 전략이 달라야 하며, 이러한 전략에 따라 사용하는 장치와 고정원의 종류도 결정된다. 심미적 개선은 기대하기 어렵지만, 저작기능을 회복하고 치아우식증, 치주질환, 악관절 장애등 여러 문제를 예방할 수 있는 하악 제2대구치 직립은 기능회복과 질환의 예방이라는 관점에서 중요한 치료이다.
Abstract
The lower 2nd molar eruption is beginning to mesiolingually, then rotate to distobuccally so it has a tendency to be tilted and impacted mesially. Signs and symptoms of impacted 2nd molar are similar to impacted 3rd molar’s. However, treatment plan for impacted 2nd molar is different from that of impacted 3rd’s. The former is the preservation and uprighting of 2nd molar so that it could act to recovery of mastication, symmetrical facial growth, maintaining the symmetry of dental arch, stable occlusion, while the latter is the extraction of tooth. If the uprighting treatment is planned, most proper protocol of treatment and the additional treatment opition should be applied with consideration for it’s crown exposure, present of 3rd molar which interrupt the uprighting process, extrusion of opposite tooth. Although it could not improve the esthetic result, it could prevent many dental problems. Therefore, uprighting for impacted lower 2nd molar is meaningful treatment.
참고문헌 (12)
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