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The purpose of this study was to determine the effects of professional mechanical toothcleansing on plaque, gingivitis, and dental caries in young children with a high caries experience. Seventy-eight children, 7 years of age, were stratified according to presence or absence of smooth surface lesions on the permanent teeth and subsequently randomly assigned to an experimental group and a control group. The experimental group was given a thorough mechanical toothcleansing every 2 weeks. After 12 months a statistically significant difference in plaque accumulation and a minor difference in level of gingival inflammation could be demonstrated between the two groups. The incidence of dental caries in permanent teeth present at both examinations was 70% lower in the experimental group. The effect on permanent teeth erupting during the study and on primary teeth present at both examinations was not statistically significant.
Poulsen et al. (Fri,) studied this question.
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