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目的 了解乌鲁木齐市汉族中学生错牙合畸形患病情况 ,分析常见错牙合畸形患病规律。方法 随机抽取 562名 1 1～ 1 9岁汉族青少年按Angle及毛燮均分类法进行分类 ,以个别正常 牙合和错牙合分类为标准。结果 错牙合畸形患病率男生为 73 .82 % ,女生为 65 .51 % ,两者差异有显著性 (P <0 .0 5)。常见的错牙合畸形为拥挤、深覆盖、个别牙错位 ,患病率分别为 2 0 .46 %、1 6 .38%、9.0 7%。错牙合患者中安格分类以一类最多 (61 .1 3 % ) ,四类最少 (0 .77% )。有正畸治疗史者少见。结论 乌鲁木齐市汉族青少年错牙合畸形者较多 ,应尽快早期防治并增强患者正畸意识。
Objective To understand the prevalence of malocclusion in Han middle school students in Urumqi and to analyze the prevalence of common malocclusion. Methods 562 adolescents aged from 1 to 19 years old were randomly selected according to Angle and Mao Xie's classification. Individual normal occlusion and malocclusion were taken as the standard. Results The prevalence of malocclusion was 73.82% for boys and 65.51% for girls, the difference was significant (P <0.05). Common malocclusion deformity crowded, deep coverage, the number of individual dislocation, the prevalence rates were 20.46%, 16.38%, 9.07%. Among the patients with malocclusion, Engel was classified into the highest category (61.1%) and the lowest category (0.77%) for the fourth category. There is a rare history of orthodontic treatment. Conclusion There are more malocclusion and malformations in Han nationality in Urumqi. Early prevention and treatment of orthodontic patients should be strengthened.