Table 4.
Mean and Standard Deviations (SD) of Phosphorus (wt %) from Enamel for Each Group and Period of Treatment
| Groups | First cariogenic challenge | Second cariogenic challenge | % variation |
|---|---|---|---|
| 1. Control | 16.64* (2.25) | 14.07* (2.13) a | −15.45 |
| 2. Cream | 15.48 (3.24) | 16.12 (2.18) | +4.13 |
| 3. Laser | 16.02 (0.76) | 16.02 (1.49) | 0 |
| 4. Cream + laser | 16.67 (1.75) | 17.17 (0.59) A | +3 |
| 5. Cream + laser + fluoride | 15.57 (2.23) | 15.35 (2.64) | −1.42 |
| 6. Cream + fluoride | 15.90 (2.04) | 15.96 (2.02) | +0.37 |
A lowercase letter after a value indicates statistically significant differences between groups; an uppercase letter indicates borderline significant differences between groups.
*
Borderline significant differences using paired t test.