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目的:了解甘肃省农村地区儿童乳牙生长发育现状,探讨乳牙发育与身高发育的关系。方法:分层随机整群抽取甘肃省安定区、岷县、宁县、肃州区农村地区7岁以下儿童进行调查,调查项目包括体格检查(体重、身高、坐高、胸围、头围)和问卷调查(儿童的姓名、出生日期、实足年龄、出生体重、家庭经济状况、乳牙萌出时间、出牙个数等)。结果:甘肃省农村地区儿童乳牙平均萌出时间为7个月左右;78.08%的儿童在6～8月龄开始萌出乳牙;2岁以下的男女童中,5～12月龄组乳牙已萌出儿童身高高于未萌出儿童;6～8月、9～11月男童乳牙出牙数大于同龄组女童,差异有统计学意义(P<0.05)。结论:1岁以下儿童乳牙的生长发育水平有性别差异,乳牙的生长发育水平对身高的影响需要进一步研究。
Objective: To understand the status of primary growth and development of deciduous teeth in rural areas of Gansu Province and to explore the relationship between the development of primary teeth and height development. Methods: Stratified cluster random sampling was conducted in children under 7 years of age in rural areas of Anding District, Min County, Ning County, and Suzhou District of Gansu Province. The survey items included physical examination (weight, height, sitting height, bust, head circumference) and questionnaires Surveys (name of child, date of birth, age at birth, birth weight, family economic status, time of deciduous teeth eruption, number of teething, etc.). Results: The average eruption time of the deciduous teeth of children in rural areas of Gansu province was about 7 months. 78.08% of the children started to have deciduous teeth at the age of 6-8 months. The deciduous teeth of 5-12 months old boys and girls younger than 2 years old had eruption children’s height Higher than that of non-eunuch children. There was a significant difference between June to August and September to November (P <0.05). Conclusion: There is a gender difference in the growth and development of deciduous teeth in children under 1 year old. The effect of growth and development of deciduous teeth on height needs further study.