结果：实验组刷牙教育后患龋率、龋均、牙龈指数、简化口腔卫生指数均低于对照组，差异显著（P<0.01）。
RESULTS: The indexes of the prevalence rate of dental caries , caries average, GI, OHI-sin the experimental group after teeth brushing education were better than in the control group (P<0.01).
方法对175名12～14岁儿童2年中新增龋与基线DMFS、口腔卫生行为、菌斑指数和牙菌斑中无机成分等指标进行纵向观察；
Methods Subjects were 175 of 12~14 years old schoolchildren. DMFS, plaque scores and oral health behavior were recorded in baseline, year 1 and year 2 examinations.
方法对175名12～14岁儿童2年中新增龋与基线DMFS、口腔卫生行为、菌斑指数和牙菌斑中无机成分等指标进行纵向观察；
Methods Subjects were 175 of 12~14 years old schoolchildren. DMFS, plaque scores and oral health behavior were recorded in baseline, year 1 and year 2 examinations.
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