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目的调查140例3～7岁儿童错畸形患病情况。方法对浙江省余姚市三所幼儿园314例3～7岁儿童患错畸形情况进行流行病学调查研究。结果 140例错畸形儿童中,男性儿童错畸形患病率为47.56%(78/164),女性儿童错畸形患病率为41.33%(62/150),男性患病率略高于女性,但差异没有显著性(P>0.05)。Ⅰ类错畸形102例,占72.9%;Ⅱ类错畸形17例,占12.1%;Ⅲ类错畸形21例,占15.0%。上、下颌第2乳磨牙远中面的关系分别为垂直型83例,占59.3%;近中型39例,占27.9%;远中型10例,占7.1%;混合型8例,占5.7%。结论学龄前儿童错畸形的防治任重而道远。
Objective To investigate the prevalence of malformation deformity in 140 children aged 3 to 7 years. Methods Epilepsy was investigated in 314 children aged 3-7 years in three kindergartens in Yuyao, Zhejiang Province. Results The prevalence rate of malformation malformations in male children was 47.56% (78/164) in 140 cases of malformation malformations, and was 41.33% (62/150) in female children. The prevalence rate of male malformations was slightly higher than that of male ones Female, but the difference was not significant (P> 0.05). Class Ⅰ malocclusion 102 cases, accounting for 72.9%; Class Ⅱ malocclusion 17 cases, accounting for 12.1%; class Ⅲ malocclusion 21 cases, accounting for 15.0%. In the upper and lower mandibular second molar, there were 83 cases of vertical type, accounting for 59.3%, 39 cases of proximal type, accounting for 27.9%, 10 cases of distal type, accounting for 7.1%, and 8 cases of mixed type, accounting for 5.7%. Conclusion The prevention and treatment of malformations and deformities in preschool children have a long way to go.