【摘要】 目的:探讨乌鲁木齐市汉族青少年的(牙合)特征。方法:按随机化原则和整群分层抽样方法抽取562例11 -19岁乌鲁木齐市汉族学生,并制取牙颌石膏模型,观察磨牙关系、覆盖分布情况、覆(牙合)分布情况及咬合异常和中切牙间隙的分布情况。结果:磨牙Ⅰ、Ⅱ、Ⅲ、Ⅳ类关系构成分别为72.95%、14.06%、12.46%、0.53%。前牙覆盖(0-4 mm)者构成为82.21%,前牙反(牙合)者构成为5.52%,前牙覆(牙合)(<1/3牙冠)者构成为59.07%,前牙开(牙合)者构成为1.60%,后牙反(牙合)者构成为10.10%,锁(牙合)者构成为9.96%。结论:在乌鲁木齐汉族青少年人群中异常咬合关系分布较高,应予以足够重视。更多还原

【Abstract】 Objective:To investigate the occlusal features among adolescents of Han nationality in Urumqi. Methods: Five hundred and sixty-two schoolchildren aged from 11 to 19 years old were investigated with their study casts to observe the angle classification and the relationship of over-jet and overbite in both anterior and posterior teeth and distribution of malocclusion. Results:72. 95%, 14. 06%, 12. 46%, 0. 53% were found with molar relationship of angle classification respectively. Anterior cross-bite, open bite, over-jet (0-4 mm), overbite (≤1/3 crown) were 5. 52%, 1.60%, 82.21%, 59.07% respectively. Posterior cross bile, scissors bite were 10. 10%, 9. 96% respectively. Conclusion: Abnormal occlusion stands a large ratio among adolescents of Han nationality in Urumqi. It should be paid attentions.更多还原