Table 1. Fluoride concentration (μg F/g) on enamel and dentine, according to the treatments (mean ± SD; n = 12), and values of regression analyses between treatments by substrate.
| Treatmentsα (ppm F) | Fluoride concentration (μg F/g) | |
|---|---|---|
| Enamel | Dentine | |
| 0 (control) | 256.4±65.8 A,a | 1105±331 B,a |
| 150 | 439.4±200.0 A,b | 3896±964 B,b |
| 450 | 588.2±223.4 A,bc | 4697±1113 B,bc |
| 1,350 | 760.7±241.9 A,c | 6133.±1280 B,c |
| Linear regression | r = 0.665; p < 0.001 | r = 0.688p; p < 0.001 |
Distinct capital letters indicate differences (p < 0.05) between enamel and dentine (values within lines)
Distinct lower case letters indicate differences (p < 0.05) among fluoride treatments (values in columns for enamel and dentine
α Concentrations to simulate brushing with toothpaste from low to high F concentration, considering the dilution (1:3) by saliva
All values transformed by log 10 to statistical analysis.