Table 1 Compositions of dentifrices used in the current study

CPP dentifrice

Beyond/Gobrite Desensitizing Paste (Beyond International Inc. Sugar Land, TX, USA)

Sodium Fluoride 0.32% (w/w), Casein Phosphopeptide, Sorbitol, Calcium Lactate, Dipotassium Phosphate, Hydrated silica (8 μm on average), Potassium Nitrate, Vegetable Glycerin, Calcium Nitrate, Xylitol, Sodium Hydroxide, Hydroxyethyl Cellulose, Titanium Dioxide, Hydroxyapatite, Cellulose Gum, Potassium Sorbate, Aroma, Sucralose, Thymol, Deionized Water,

PVM/MA dentifrice

Beyond/Gobrite Whitening Toothpaste Sensitivity Formula (Beyond International Inc. Sugar Land, TX, USA)

Sodium Fluoride 0.24% (w/w), PVM/MA Copolymer, Sorbitol, Titanium Dioxide, Potassium Nitrate, Silicon Dioxide (0.2 – 0.3 μm), Deionized Water, Propylene Glycol, PEG-1450, Sodium Lauryl Sulfate, Cellulose Gum, PEG-400, Hydroxyethyl Cellulose, Sodium Hydroxide, Aroma, Sodium Saccharin, Sodium Benzoate

Control dentifrice

Crest Regular Cavity Protection (Proctor & Gamble Inc., Cincinnati, OH, USA)

Sodium fluoride 0.243% (0.15% w/v Fluoride Ion), sorbitol, water, hydrated silica, sodium lauryl sulfate, trisodium phosphate, flavor, sodium phosphate, cellulose gum, sodium saccharin, carbomer 956, mica, titanium dioxide, Blue 1.