Table 1.
Ingredients and concentration of pH conditioner (mmol/L) in each experimental group
| Group | pH conditioner | Other ingredients | Concentration of pH conditioner (mmol/L) | pH | Experiment | |
|---|---|---|---|---|---|---|
| HP | BT | |||||
| NaHCO3 |
Sodium bicarbonate 0.33 g |
35% Hydrogen peroxide 10‐ml Deionized water 5‐ml Carboxymethyl cellulose sodium salt 0.35 g (all groups) |
260 | 7.0 (all groups) | ○ | ○ |
| NaOH |
Sodium hydroxide 0.005 g |
8.30 | ○ | ○ | ||
| Na2CO3 | Potassium sodium carbonate 0.01 g | 6.20 | ○ | ○ | ||
| KHCO3 | Potassium hydrogen carbonate 0.30 g | 200 | ○ | ○ | ||
| KOH |
Potassium hydroxide 0.01 g |
10.0 | ○ | x | ||
| K2CO3 |
Potassium carbonate 0.01 g |
4.80 | ○ | x | ||
Note. BT: Experiment using artificially discolored bovine tooth model; HP: Experiment using hematoporphirin‐stained paper.