Question

a)Explain about PH change as the cause of tooth decay.​

Answer 1

Answer:

 Tooth decay starts when the pH of the acid formed in the mouth falls below 5.5 because the acid becomes strong enough to attack the enamel of the teeth and corrode it. ... Calcium carbonate is added to acidic lake water to neutralise the acid and this prevents the fish from being killed.

Explanation:

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Answer 2

Tooth decay begins because of two bacteria: streptococcus usually and lactobacillus. If left untreated, this disease can result in pain, tooth loss, infection, and even death under extreme conditions. Dental caries at present continue to be the most common disease all over the world......