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本文调查了南京市聋哑学校334名替牙期、恒牙期聋哑青少年儿童错(牙合)畸形患病情况,患病率91.62％,男女性别间差异无显著性意义,恒牙期患病率91.8％,明显高于替牙期81.74％(p<0.01),并用安氏、毛氏、个别牙错位分类法进行分类。分析了错(牙合)畸形与聋哑症的关系,错(牙合)畸形患病率恒牙期高于替牙期的原因、毛氏Ⅰ~1、Ⅱ~4、Ⅳ~1患病率与年龄的关系及前牙深覆(牙合),深覆盖与后牙(牙合)关系的关系。
This paper investigated the prevalence of malocclusion in 334 deaf and dumb children from Nanjing Deaf and Mute School, with a prevalence of 91.62%. There was no significant difference between men and women in gender, permanent dentition The prevalence was 91.8%, which was significantly higher than 81.74% (p <0.01) during the period of dentition and was classified by Angle, Mao and individual tooth dislocation classification. The relationship between malocclusion and deafness was analyzed. The prevalence of malocclusion was higher in the permanent dentition than that in the dentition. The prevalence of Ⅰ ~ 1, Ⅱ ~ 4, Ⅳ ~ 1 Relationship between Rate and Age and the Relationship between Deep Occlusion, Deep Coverage and Posterior Occlusion.