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目的 :调查杭州市区少年儿童错畸形的患病率、错类型构成比、治疗情况及患者与其家长对此的意识水平。方法 :对杭州市 1818名 7～ 16岁中小学生进行临床检查及问卷调查。结果 :错患病率为 35 .75 % ,安氏分类 : 类 5 93例 (32 .6 2 % ) , 类 4 8例 (2 .6 4% ) , 类 9例 (0 .4 9% )。其中牙列拥挤、深覆、深覆盖、前牙反在错畸形中的构成比 ,替牙期分别为 70 .6 6 %、6 7.82 %、6 0 .5 7%、12 .30 % ;恒牙期分别为 85 .89%、31.2 3%、5 1.0 5 %、9.91%。错患者中家长认为需矫治者占 30 .6 2 % ,已接受矫治者仅占 10 .15 %。结论 :杭州市区少年儿童错畸形中安氏 类占绝对多数 ,已接受矫治者比例低。
Objective: To investigate the prevalence of malformation deformities in children and adolescents in Hangzhou area, the constitutional ratio of malformations, the treatment and the level of awareness of patients and their parents. Methods: A total of 1818 primary and secondary school students aged 7-16 in Hangzhou were investigated with questionnaires. Results: The prevalence of malformations was 35.75%. Classifications: Class 93 93 cases (32.62%), Class 48 cases (2.64%), Class 9 cases (0.49% ). The proportion of dentition crowding, deep overburden, deep overlay and anterior cruciate ligament in malocclusion were 70.66%, 6 7.82%, 60.57% and 12.30 respectively %. The permanent teeth period was 85.89%, 31.23%, 5 1.05% and 9.91% respectively. In the wrong patients, parents think that 30.62% of them need correction and only 10.15% of those who have received treatment. Conclusion: The prevalence of Achilles' angels among children and adolescents in Hangzhou area is relatively low, and the proportion of children who have received orthodontics is low.