右下颌第三磨牙异位埋伏阻生一例报告潘穗文，张建强，郭连美人类在演化过程中，下颌骨有逐渐退化的趋向，以致常缺乏足够的位置容纳全部牙齿，第三磨牙是牙列中最后萌出的牙，因此，下颌第三磨牙经常发生阻生的现象。但是，下颌第三靡牙阻生，多发生于牙列未端，而在牙列... A case report of heterotopic implantation of right third molar of the right lower jaw PAN Sui-wen, ZHANG Jian-qiang, GUO Lian-mei During the evolution of human beings, the mandible gradually degenerated so that it often lacked sufficient position to accommodate all the teeth. The third molar was the last eruption in the dentition Of the teeth, therefore, mandibular third molars often happen to stop the phenomenon. However, the third mandibular tooth impaction, occurred in the distal dentition, while in the dentition ...