Table 2.
Proportions of missing teeth, or teeth that were non-eligible according to various exclusion criteria, separately for the tooth groups of maxillary incisors and complete upper and lower dental arches.
| Group | Subjects (n) | Potentially eligible teeth (n) | Valid trial teeth (n) | Missing, restored, or not judgeable upper incisors 12–22 (n) [%] | Missing, restored, or not judgeable teeth 17–47 (n) [%] | Teeth with pre- existing WSLs |
|---|---|---|---|---|---|---|
| A | 393 | 11004 | 10138 | 103 [0.94%] | 838 [7.62%] | 28 [0.25%] |
| B | 237 | 6636 | 6076 | 34 [0.51%] | 526 [7.93%] | 34 [0.51%] |
| Total | 630 | 17640 | 16214 | 137 [1.27%] | 1364 [2.98%] | 62 [0.35%] |
WSL, white spot lesion.