How tooth decay occurs??
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this occur when the people eat like junk food ,chocolate hope it helps
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ardra5:
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Tooth decay starts when the pH of the mouth is lower than 5.5.
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but pls explain
actually tooth enamel ,made of up of calcium phosphate. it is the hardest substance in the body .it does note it does note dissolve in water , but it corroded when pH in mouth is below 5.5
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