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Below which pH can tooth decay start more rapidly?

Answer and explanation

Correct answer: About 5.5

Bacteria in the mouth can convert food sugars into acids. When the pH around the teeth falls below about 5.5, the mineral hydroxyapatite in enamel can begin to dissolve more readily, increasing the risk of dental caries. Hence option B is correct. A pH of 7 is neutral, while 10 and 14 are alkaline and do not represent the critical acidic threshold.

Related tags

Tooth DecayPhEnamelAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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