Data sources PubMed, EMBASE, and the Cochrane Central Register of Controlled Trials databases.Study selection PubMed, EMBASE, and the Cochrane Central Register of Controlled Trials databases were searched for studies published in English between January 1950 and February 2017.Data extraction and synthesis Data were extracted independently by two reviewers and risk of bias assessed using a modified Jadad scale. Heterogeneity was evaluated using the chi-squared statistic and meta-analysis performed.Results Three randomised trials were included, involving 681 participants; all children 10-13 years old. Two trials were conducted in the USA and one in the UK. Two studies tested school-based, daily supervised oral hygiene (including plaque staining and removal and supervised flossing) against control groups; one study tested the same intervention every two weeks against controls. Two studies measured decayed, missing or filled surfaces (DMFS) scores at three years and one trial at 29 months. Personal oral hygiene interventions failed to influence the incidence of dental caries, (DMFS = -0.11; 95% CI -0.91, 0.69: P value <0.79). Four non-randomised trials were retained to conduct sensitivity analyses.Conclusions Personal oral hygiene interventions delivered to school children failed to show a reduction in coronal dental carious lesion incidence over three years when compared to control groups.

中文翻译：

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个人口腔卫生建议对预防冠状龋齿有效吗？

数据来源PubMed，EMBASE和对照试验的Cochrane中央登记册。选择研究PubMed，EMBASE和对照试验的Cochrane中央登记册，以检索1950年1月至2017年2月之间以英文发表的研究。由两名审稿人独立提取，并使用改良的Jadad量表评估偏倚风险。结果采用卡方统计和荟萃分析评估了异质性。结果纳入了3项随机试验，涉及681名参与者。所有10-13岁的儿童。在美国进行了两项试验，在英国进行了一项试验。两项研究对对照组进行了基于学校的日常监督口腔卫生（包括斑块染色和清除以及监督牙线检查）；一项研究每两周对对照进行一次相同的干预测试。两项研究在三年时测量了腐烂，缺失或填充表面（DMFS）得分，一项研究在29个月时进行了测量。个人口腔卫生干预措施未能影响龋齿的发生率（DMFS = -0.11； 95％CI -0.91，0.69：P值<0.79​​）。保留了4项进行敏感性分析的非随机试验。结论与对照组相比，向学龄儿童进行的个人口腔卫生干预未能显示出3年内冠状龋的发病率降低。69：P值＜0.79）。保留了4项进行敏感性分析的非随机试验。结论与对照组相比，向学龄儿童进行的个人口腔卫生干预未能显示出3年内冠状龋的发病率降低。69：P值＜0.79）。保留了4项进行敏感性分析的非随机试验。结论与对照组相比，向学龄儿童进行的个人口腔卫生干预未能显示出3年内冠状龋的发病率降低。