Table 3.
Surface roughness values of the PUL, PUC, PUZ, and PET groups at baseline and after repeated toothbrushing (n = 5).
| Group | Baseline | After repeated toothbrushing | ||||||
|---|---|---|---|---|---|---|---|---|
| Mean | S.D. | Median | Min–max | Mean | S.D. | Median | Min–max | |
| PUL | 1.69a | 0.18 | 1.69 | 1.46–1.92 | 1.79a | 0.16 | 1.88 | 1.59–1.95 |
| PUC | 1.65a | 0.14 | 1.63 | 1.49–1.86 | 1.67a | 0.08 | 1.68 | 1.58–1.77 |
| PUZ | 1.76a | 0.27 | 1.81 | 1.37–2.02 | 1.71a | 0.08 | 1.73 | 1.61–1.78 |
| PET | 0.94b | 0.07 | 0.91 | 0.88–1.04 | 0.95b | 0.16 | 0.89 | 0.82–1.22 |
| Significance | *** | *** | ||||||
Statistical significances were tested by ANOVA and multiple comparisons with the Tukey test at the significance level of p < 0.05. Superscript letters (a, b, c) indicate results of post hoc comparisons; groups sharing the same letter are not significantly different (p > 0.05). ***p < 0.001.