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NTIS 바로가기大韓小兒齒科學會誌 = Journal of the Korean academy of pediatric dentistry, v.42 no.1, 2015년, pp.87 - 101
The premature loss of the mandibular primary canine is relatively frequent and a sign of the upcoming space problems in the transitional period. This situation is caused by the permanent lateral incisor resorbing the root of the primary canine during its eruption. Bilateral loss of primary canines i...
핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
견치간 너비란? | 견치간 너비는 양 견치 교두를 잇는 직선거리를 말하는데, 남자는 6세부터 10세, 여자는 6세부터 9세 사이에 상악은 5~6 mm, 하악은 3~4 mm 정도 증가한다7,10). 이와 같은 너비의 증가는 이 시기에 치조골의 발육과 함께 영구 측절치가 맹출되면서 유견치를 측방, 그리고 후방으로 밀어서 기인되는 것으로 알려져 있다. | |
영구치열기에서의 총생의 가능성을 사전에 감지할 수 있는 요소는 무엇이 있는가? | 일반적으로 영구치열기에서의 총생의 가능성을 사전에 감지할 수 있는 요소로1) 유치열기에서의 치간공간(interdental space)의 결여, 2) 혼합치열기 초기 영구 절치의 총생, 그리고3) 유견치의 조기상실을 들 수 있다1-3). | |
하악 유견치가 조기 탈락하는 이유는? | 이에 대한 답을 간단히 말하자면, 이런 원인이 주로 치아 맹출 공간상의 문제라고 할 수 있다. 즉, 영구 측절치가 맹출될 때 맹출 공간이 부족할 경우 인접해 있는 유견치 치근을 흡수시키면서 맹출하게 되고 그 결과 유견치가 조기에 탈락하게 된다1) (Fig. 1). |
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