永久犬齿 The permanent canines 序論(Introduction) 口腔基石(cornerstone of mouth) 功能、 形态及牙弓位置(arch position) 均介于切 齿(incisor) 及后齿(posterior teeth) 之间 功能撕裂(tearing) 序論(Introduction) 形态邻接面(proximal) :楔形(wedge...
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牙弓的形态和位置决定了牙齿的排列，只要可能，目标是将人工牙放置在原天然牙所占据的位置。
The arch form and position determine the placement of the teeth, and wherever possible, the aim is to place the artificial teeth in the same positions previously occupied by the natural teeth.
人体尖牙在颌面、牙弓中占重要位置，对维持人颌面的正常形态、功能起重要作用。
Canine teeth play an important role in maintaining normal appearance and function of maxillofacial region. Ectopic impacted canine teeth seriously affect the patient's as well as oral functions.
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