The pH of toothpaste ranges from 3 to 10 depending on the additives it contains. Regular toothpaste has an average pH of 8. Whitening toothpaste has an average pH of 6.83.
pH is the measure of the acidity or alkalinity of a solution. A lower pH indicates acidity while a higher pH indicates alkalinity. A pH value of 7 is considered neutral. Research on the effects of pH on enamel suggests that low pH and high acid concentrations lead to adverse side effects such as enamel erosion. Tooth demineralization can start at a pH of 6.5 for the root and 5.5 for the enamel.