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恒牙萌出是青少年生长发育的重要标志之一。虽然国内外调查资料所得数据有明显差异,但大致有一个恒定的趋向,如各牙萌出次序、萌出的年龄范围,女性恒牙一般早于男性等。本文目的主要是分析汉族与哈萨克族(以下简称哈族)之间恒牙萌出年龄的差异,同时也对比一下男女之间的差异、50年代南京汉族和80年代阿勒泰汉族之间的差异。 1 资料和方法 我们在新疆阿勒泰市区和布尔津、哈巴河、富蕴3个县的城关镇调查了3～16岁男女儿童和少年。市区受检率在70％以上,3个县的城关镇的
Eruption of permanent teeth is one of the important signs of adolescent growth and development. Although there are significant differences in the data obtained from the survey data at home and abroad, there is generally a constant trend, such as the sequence of eruptions of teeth, the age range of eruptions, and the prevalence of permanent teeth in women before that of males. The purpose of this paper is to analyze the differences in the age of eruption of permanent teeth between Han and Kazak ethnic groups and to compare the differences between men and women in the 1950s between the Han nationality in Nanjing and the Altay ethnic Han nationality in the 1980s. 1 Materials and Methods We investigated boys, girls and adolescents aged 3-16 in the urban area of Altay, Xinjiang, Burqin, Habahe and Fuyun counties. The urban area inspection rate of 70% or more, three counties Chengguan town