Research Article
Relationship between Duration of Fluoride Exposure in School-Based Fluoride Mouthrinsing and Effects on Prevention and Control of Dental Caries
Table 3
Prevalence of questionable caries under observation of permanent teeth in 12-year-old children in two groups.
| | S-FMR experience in elementary school | | | | Teeth | Tooth surfaces | | Gender | Number | CO* person rate (%) | Mean CO teeth | Percentage of CO teeth/total teeth (%) | Mean CO tooth surfaces | Percentage of CO tooth surfaces/total tooth surfaces (%) |
| | Boys | 319 | 37.9 | 0.86 | 3.41 | 1.09 | 0.96 | | F+ | Girls | 280 | 39.6 | 0.92 | 3.53 | 1.15 | 0.98 | | Subtotal | 599 | 38.7 | 0.89 | 3.46 | 1.12 | 0.97 | | Boys | 147 | 55.0 | 1.35 | 5.41 | 3.31 | 2.98 |
| | F− | Girls | 135 | 61.5 | 2.01 | 7.78 | 2.52 | 2.16 | | Subtotal | 282 | 57.8 | 1.66 | 6.56 | 2.93 | 2.58 |
| | Total | 881 | 44.8 | 1.14 | 4.45 | 1.70 | 1.48 |
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*CO: questionable caries under observation.
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