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目的调查新疆维汉两民族青年人恒牙先天缺失的状况。方法 2008-2009年对新疆高校学生共5150名采取随机、整群抽样的方法进行恒牙发育异常情况的调查。对总体及维汉两民族先天缺牙情况进行患病率、颌位情况、缺牙数目、好发牙位及同时伴发2种牙齿发育异常的情况进行卡方检验。结果恒牙先天缺失的总患病率为5.98%,汉族高于维族(P<0.05),维族男性患病率低于女性(P<0.05)。总体及汉族缺牙数目下颌多于上颌(P<0.05),好发牙位为下颌中切牙;总体及维汉均以缺失1颗牙者最多见,且锥形牙与先天缺牙伴发的比率高。结论恒牙先天缺失的总患病率略低于其他学者的研究,民族间患病率有差异,汉族高于维吾尔族。性别差异、颌位情况、缺牙数目、好发牙位及伴发情况与其他学者的研究基本一致。
Objective To investigate the status of congenital absence of permanent teeth between two ethnic groups in Xinjiang Uygur and Han nationality. Methods From 2008 to 2009, a total of 5150 college students in Xinjiang were investigated by randomized, cluster sampling method. The incidence of congenital tooth loss between the two ethnic groups of Uyghur and Han ethnicity was analyzed by chi-square test. The prevalence rate, jaw position, the number of missing teeth, the number of missing teeth and the occurrence of two kinds of tooth growth abnormalities were analyzed. Results The total prevalence of congenital absence of permanent tooth was 5.98%, Han was higher than Uygur (P <0.05), and the prevalence of Uygur male was lower than that of female (P <0.05). The total number of teeth and the number of missing teeth of the Han were more than that of the maxilla (P <0.05). The most common teeth were mandibular incisors. High rate. Conclusions The total prevalence of congenital absence of permanent teeth is slightly lower than that of other scholars. There is a difference in the prevalence among ethnic groups. Han people are higher than Uyghurs. Sex differences, jaw position, the number of missing teeth, good teeth and concomitant conditions and other scholars are basically the same.