【摘要】 目的 :本文通过普查 ,了解乳牙反的患病率 ,调查分析其病因。方法 :对 813名 2～ 6 .5岁儿童进行口腔检查 ,其中 6 9名乳牙反患者进行家长问卷调查 ,临床资料作统计与分析。结果 :乳牙反患者的患病率为 8.49%。四个年龄组中 3～ 4岁组最高 ,5～ 6 .5岁组最低 ,两者有显著性差异。其余各组及男女间均无显著性差异。结论 :乳牙反为牙性—机能性反 ,不良习惯是导致乳牙反的主要因素更多还原

【Abstract】 Objective: To investigate the prevalence of deciduous crossbite and analyse the cause of it. Methods: 813?2～6.5 year-old children were conducted for oral examination, and parents of 69 children with deciduous crossbite were conducted for questionnaire.Results: The prevalence of deciduous crossbite was 8.49%. Among 4 age groups, the prevalence of 3～4 year-old group was the highest, while the 5～6 year-old was the lowest. Significant difference was found between them. No significant difference were found between sex and the other two groups.Conclusion: Deciduous crossbite was considered as dentalfunction crossbite and abnormal habit was the main factor.更多还原