Table 2.
Distribution of Permanent Second Molars According to Eruption Stage and Occlusal Caries Activity, n (%)
| Caries Activity | Eruption Stage | Total | |||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | ||
| No | |||||
| Sound | 526 (72.1) | 108 (66.7) | 814 (67.2) | 694 (71.7) | 2,142 (69.7) |
| Inactive noncavitated | 9 (1.2) | 5 (3.1) | 148 (12.2) | 164 (16.9) | 326 (10.6) |
| Inactive cavitated | 1 (0.1) | 1 (0.6) | 20 (1.7) | 31 (3.2) | 53 (1.7) |
| Dark shadow from dentine | 0 | 0 | 6 (0.5) | 13 (1.3) | 19 (0.6) |
| Sealed | 0 | 0 | 2 (0.2) | 2 (0.2) | 4 (0.1) |
| Total* | 536 (73.4) | 114 (70.4) | 990 (81.8) | 904 (93.4) | 2,544 (82.8) |
| Yes | |||||
| Active noncavitated | 184 (25.2) | 43 (26.5) | 179 (14.8) | 48 (5.0) | 454 (14.8) |
| Active cavitated | 10 (1.4) | 5 (3.1) | 35 (2.9) | 15 (1.5) | 65 (2.1) |
| Filled | 0 | 0 | 7 (0.6) | 1 (0.1) | 8 (0.3) |
| Total* | 194 (26.6) | 48 (29.6) | 221 (18.2) | 64 (6.6) | 527 (17.2) |
*
p < .01. Chi-square test for total number of lesions according to eruption stage, adjusted for clustering of observation within children.