1. Why does tooth decay starts when the pH of mouth is lower than 5.5
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1. Why does tooth decay starts when the pH of mouth is lower than 5.5
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Answer:
beacuse when pH reaches lower the enamel layer of teeth is not to much resistance to acidic action hence the corrosion of enamel starts which leads to tooth decay
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PLSS MARK BRAINLIEST
Explanation:
Tooth decay starts when the pH of mouth is lower than 5.5 because Tooth enamel , made up of calcium phosphate is the hardest substance in the body . It does not dissolve in water , but corroded when the pH in the mouth is below 5.5 . Bacteria present in the mouth produces acids by degradation of sugar and food particles remaining in the mouth.