经普查挑选广东人150名正常,分为替牙期,恒牙初期及恒牙期三组。每人拍摄头颅侧位定位X光照片,采用Downs,Steiner,Tweed,Wylie四种分析法进行测量,得出各项均值与标准差。结果表明,(1)广东人为凸面型。(2)比北京人、上海人的面型更趋于前凸,并呈现出双颌前凸的颌面结构特征。(3)面高度、面深度、下颌长度的均值,男大于女,两性别间颌面结构存在高度显著性差异。 The census selected Cantonese 150 normal , divided into period, initial permanent teeth and permanent teeth of the three groups. Each patient filmed the lateral radiographs of cephalometric cranial radiographs and measured with Downs, Steiner, Tweed and Wylie four methods to obtain the mean and standard deviation. The results show that (1) Cantonese is convex type. (2) Compared with Beijingers and Shanghaimen, the facial features tended to be convex and showed the maxillofacial features of bimaxillary protrusion. (3) The mean of facial height, facial depth and mandibular length is significantly higher than that of male and female genitalia.