Abstract

과잉 소구치는 장애 환자에서 교정적 문제를 일으켜 구강 위생 관리의 어려움을 초래할 수 있는데 발생 시기가 늦고 병리학적 문제의 발생 가능성이 낮으며 재발의 가능성이 높으므로 발거 시기를 전체 영구치열이 완전한 성숙을 이룬 후로 미루어야 하며 매복되어 있어 특이할 만한 합병증이 발견되지 않는 경우, 수술적 위험성을 감수하기보다는 남겨 두는 것을 추천한다. The supernumerary premolars account for 4%-9% of all supernumeraries and reported prevalence is 0.01%-1.00%. Multiple supernumerary teeth can be seen in syndromic phenotypes. But, only 2% of supernumerary premolars exhibited any pathological changes. Most of them cause interference with normal occlusal development that makes maintaining the disabled patients's oral hygiene difficult. It is recommended to delay the timing of extraction until the full permanent dentition is mature. If there is no complication, leaving the supernumerary premolars impacted is recommended. This case is about mental retardation patients with multiple supernumerary premolars.

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