“ pH change is the cause of tooth decay "
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tooth decay starts when the pH of the mouth is lower than 5.5 tooth enamel made up of calcium phosphate is the hardest substance in the body ..
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Tooth decay occurs if pH of the mouth lowers than 5.5. As we know tooth enamel is made up of calcium phosphate [Ca3(PO4)2] and it decays when mouth pH goes below to 5.5.
Because bacteria present in mouth produce acid by degration of sugar and food particles which remains in the mouth after eating. That's why in order to prevent tooth decaying we use toothpaste which are basic in nature.
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