Table 3 The relative mineral density (g cm− 3) changes (SUM*; mean ± SD) from the plotted line profiles from Fig. 2 at the tooth subsurface. (SUM* is the integrity mineral density change)
From: Evaluation of toothpastes for treating root carious lesions – a laboratory-based pilot study
Groups | Baseline-after ARCLs | ARCLs-After 13 days of pH-cycling | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Decrease | p-value | Increase | p-value | Subsurface decrease | p-value | Net change in mineral content | ||||||
SUM* | mean ± SD | Kruskal-Wallis H, H [3] = 0.834, p = 0.841; intergroup comparison: Mann-Whitney test: Groups 1 and 2 (p = 0.978), Groups 1 and 3 (p = 0.705), Groups 1 and 4 (p = 0.626), Groups 2 and 3 (p = 0.871), Groups 2 and 4 (p = 0.516), Groups 3 and 4 (p = 0.358) | SUM* | mean ± SD | Kruskal-Wallis H, H [3] = 6.435, p = 0.092; intergroup comparison: Mann-Whitney test: Groups 1 and 2 (p = 1.131), Groups 1 and 3 (p = 0.037), Groups 1 and 4 (p = 0.020), Groups 2 and 3 (p = 0.468), Groups 2 and 4 (p = 0.375), Groups 3 and 4 (p = 0.922) | SUM* | mean ± SD | Kruskal-Wallis H, H [3] = 8.028, p = 0.045; intergroup comparison: Mann-Whitney test: Groups 1 and 2 (p = 0.311), Groups 1 and 3 (p = 0.021), Groups 1 and 4 (p = 0.044), Groups 2 and 3 (p = 0.087), Groups 2 and 4 (p = 0.191), Groups 3 and 4 (p = 0.724) | SUM* | mean ± SD | ||
Group 1. Deionised water | 5.43 | 0.27 ± 0.28 | 0.22 | 0.04 ± 0.04 | 1.52 | 0.12 ± 0.07 | -1.30 | -0.08 ± 0.06 | ||||
Group 2. BG with 540 ppm F | 5.93 | 0.30 ± 0.30 | 0.88 | 0.10 ± 0.08 | 0.98 | 0.09 ± 0.06 | -0.10 | 0.01 ± 0.07 | ||||
Group 3. 1,450 ppm F | 5.25 | 0.26 ± 0.21 | 1.47 | 0.12 ± 0.10 | 0.34 | 0.04 ± 0.03 | 1.13 | 0.08 ± 0.06 | ||||
Group 4. 5,000 ppm F | 4.17 | 0.21 ± 0.18 | 1.79 | 0.13 ± 0.08 | 0.28 | 0.04 ± 0.03 | 1.51 | 0.09 ± 0.05 | ||||