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目的分析学龄前儿童开展氟离子透入法预防龋齿的临床效果。方法采取分层整群随机抽样的方法,将28所托幼机构的3~4岁儿童随机分为两组,试验组的儿童在进行口腔健康指导的同时采用南京医科大学生产的NF-Ⅱ型护齿仪进行氟离子透入防龋,一年两次;对照组儿童常规口腔健康指导,两年后观察两组儿童的患龋率、龋均和新龋发生率。结果两年后试验组和对照组的患龋率分别为67.9%、74.3%;龋均分别为3.5±3.9、4.9±3.7;新龋发生率分别为17.3%、23.4%,患龋率、龋均、新龋发生率之间的差异均有统计学意义(P均<0.05)。结论每半年专业应用一次氟离子透入可以有效预防儿童乳牙龋的发生。
Objective To analyze the clinical effect of fluoride iontophoresis on prevention of tooth decay in preschool children. Methods A stratified cluster random sampling method was used to divide 28 children aged 3 to 4 years who were nursed in an institution into two groups at random. The children in the experimental group were guided by oral health and used NF-Ⅱ type produced by Nanjing Medical University Tooth protection instrument fluoride ion penetration anticariogenic, twice a year; control group children oral health guidance, two years after the observation of two groups of children caries prevalence, caries and new caries incidence. Results Two years later, the prevalence of caries was 67.9% and 74.3% in the test group and the control group respectively. The caries were 3.5 ± 3.9 and 4.9 ± 3.7 respectively. The incidences of caries were 17.3% and 23.4% Both, the incidence of new caries between the differences were statistically significant (P all <0.05). Conclusion Once every six months a fluoride ion penetration can effectively prevent the occurrence of deciduous caries in children.