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Ectopic Eruption of the Maxillary First Permanent Molar

上顎第一恆臼齒之異位萌出

摘要


上顎第一恆臼齒之異位萌出是一種臼齒萌出路徑的障礙,造成上顎第二乳臼齒遠心牙根的吸收,導致恆臼齒之近心傾斜,及第二小臼齒缺乏萌出之空間。本文將作文獻回顧,探討上顎第一恆臼齒異位萌出之發生率、形成原因及異位萌出之分類,並介紹幾種臨床治療的方法。

關鍵字

異位萌出 可逆 不可逆

並列摘要


Ectopic eruption of the maxillary first permanent molar is a developmental disturbance of path of eruption resulting in distal root resorption of the second primary molar. Irreversible ectopic eruption causes mesial tipping and rotation of the permanent molar, and space deficiency of the permanent second premolar. The purposes of this article are (1) to review the literature on ectopic eruption of the maxillary first permanent molar, and (2) to discuss the prevalence, etiology and classification or ectipic eruption of the maxillary first permanent molar, and (3) to introduce several treatment techniques.

並列關鍵字

Ectopic Eruption Reversible Irreversible

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