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Tooth decay starts rapidly when the pH falls below which value?

Answer and explanation

Correct answer: About 5.5

Mouth bacteria break down sugars and produce acids. As the pH decreases, the acidic environment begins to dissolve the mineral component of tooth enamel. Tooth decay becomes rapid when the pH falls below about 5.5, making option A correct. A pH of 7 is neutral, while 8.5 and 14 are alkaline values and do not represent the acidic condition that attacks enamel. Regular cleaning helps limit this process.

Related tags

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

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