Table 2.
Mean values (standard deviation) of surface hardness analysis according to the different treatments
| Product | SH0 | SH1 | SH2 |
|---|---|---|---|
| NC | 373.5 (9.4)a,A | 31.9 (5.4)b,B | 38.1 (3.7)c,A |
| PC | 376.6 (15.6)a,A | 31.5(4.0)b,B | 96.5 (11.9)c,B |
| RDC | 384.4 (14.3)a,A | 32.8 (4.4)b,B | 112.5 (27.3)c,B |
| RES | 382.2 (16.5)a,A | 31.4 (2.6)b,B | 89.5 (11.7)c,B |
| SRP | 377.0 (13.8)a,A | 32.6 (4.1)b,B | 81.8 (4.3)c,B |
Means followed by distinct letters, lower case for rows, upper cases for columns: significant, p < 0.05
SH0, surface hardness (baseline); SH1, post-demineralization surface hardness; SH2, surface hardness after pH cycling; NC, fluoride-free toothpaste colgate; PC, Colgate total 12; RDC, regenerador + sensitive; RES, regenerate enamel science; SRP, sensodyne repair an protect