小臼齒的異位萌發

Ectopic Developing Premolar Tooth

賴麗文(Li-Wen Lai) ； 陳弘森(Horng-Sen Chen)

《臺灣口腔醫學會雜誌》 17卷1期 (2001/06) Pp. 51-54

摘要

異位萌發(Ectopic eruption)是指牙齒萌發途徑隔離正位,為混合齒列中的一種生長異常。在上、下顎牙齒都有可能發生,但以下顎側門齒與上顎第一大臼齒最常見。異位萌發常造成乳齒或永久齒的不正常吸收,也會影嚮 到整個齒列排列的完整性。 很多研究者都集中於上額第一大臼齒或下顯側門齒的異位萌發,但卻很少留意到小臼齒的異位萌發。本文提出一個小臼齒異位萌發的病例,並加以討論。

關鍵字

異位萌發 ； 小臼齒

並列摘要

Ectopic eruption is a local eruption disturbance In the developing permanent dentition. It is a clinical entity at the permanent teeth, but it's most likely to occur in the eruption 0f mandibular lateral incisor and maxillary first molar. Ectopic eruption is always associated with the resorption of an adjacent primary teeth, which is hequently impacted. Many studies have focused on ectopic eruption of the maxillary first molar and mandibular lateral incisor. But very few have been done on ectopically erupting mandibular premolar. We add a new case of this condition from our dental clinic.

並列關鍵字

Ectopic eruption ； premolar