中国儿童第一恒磨牙龋齿患病状况分析

目的 分析中国7~9岁儿童第一恒磨牙萌出及患龋情况,探讨儿童实施窝沟封闭的适宜年龄。方法 对2014-2015年进行口腔检查的560121名儿童检查结果进行分析。结果 7、8、9岁儿童第一恒磨牙完全萌出率分别为79.53%、89.84%和93.81%,第一恒磨牙患龋率分别为12.18%、16.83%和19.61%,萌出率和患龋率均随年龄上升逐步升高;女性第一恒磨牙完全萌出率和患龋率均高于男性;第一恒磨牙龋齿好发牙面依次为:下侧牙与上侧牙的颌面、下牙的颊面,上牙的舌面。结论 7~9岁儿童第一恒磨牙完全萌出率高,患龋情况严重,应考虑提前窝沟封闭的实施年龄。

Eruption and caries prevalence of first permanent molar in Chinese children aged 7-9 years

Objective To analyze the eruption and caries prevalence of first permanent molar in Chinese children aged 7-9 years for the determination of suitable age of pit and fissure sealant.Methods Data of oral examination among 560 121 children between 2014 and 2015 were collected and analyzed.Results The complete eruption rate of first permanent molar among the children aged 7, 8, and 9 years were 79.53%, 89.84%, and 93.81% and the caries prevalence were 12.18%, 16.83%, and 19.61%, respectively;the two rates increased with the increment of age among the children and the two rates were higher among the girls than among the boys.Caries often occurred on occlusal surface of upper and lower teeth, buccal surface of lower teeth, and lingual surface of upper teeth.Conclusion The complete eruption rate of first permanent molar is high among 7-9 years old children and the prevalence of first permanent molar caries is also high among the children, suggesting that pit and fissure sealant should be carried out at early age among the children.