上颌第三磨牙在人类牙列中变异最大,但常未引起人们的注意,在拔除时往往对其估计不足。我们收集了各种原因拔除的465颗上颌第三磨牙,对其形态进行分析,供临床参考。资料一、465颗上颌第三磨牙来源于465名患者。男性240颗,占51.61％;女性225颗,占48.39％。其中 The third maxillary maxillary tooth has the highest variation in the human dentition, but it is often not noticed. It is often underestimated when it is removed. We collected a total of 465 maxillary third molar extracted from various causes and analyzed its morphology for clinical reference. A data, 465 maxillary third molars from 465 patients. Male 240, accounting for 51.61%; 225 women, accounting for 48.39%. among them