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Materials and their composition used in this study
| Products and manufactures | Composition |
|---|---|
| Sodium fluoride (NaF) Wako Pure Chemical, Osaka, Japan | Sodium fluoride |
| Shofu Hi‐Lite Shofu, Kyoto, Japan |
Powder Potassium peroxohydrogensulphate, Potassium hydrogensulphate, Manganese sulphate, Hydrated amorphous silica, Poly gantrez Ms‐955, Guinea green dye Liquid 35% hydrogen peroxide |
