Why does tooth decay start when the pH of mouth is lowervthan 5.5
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6
Answer:
because it starts to corrode our outermost and hardest substance ...which is enamel ...then penetrating the deeper layers and finally rupturing the blood vessels
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3
Answer:
because when pH of our mouth less than 5.5 then in our mouth acid is formed.this is the main reason for tooth decay and second reason is that when we do not.brush then also pH of our mouth became less which causes of tooth decay.
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