distal cause 中文意思是什麼
distal cause
解釋
遠因-
Excessive mesial - axial inclination of the mandibular second molar or inadequate posterior arch length cause the mandibular second molar to become impacted against the distal contour of the first permanent molar
摘要下顎牙弓空間不足或第二大臼齒本身過度的近心軸向傾斜,常造成第二大臼齒前傾和阻生。
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