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Why is a basic toothpaste useful for teeth?

Answer and explanation

Correct answer: It can neutralise acid formed in the mouth

Bacteria in the mouth can break down sugars and produce acids. These acids lower the local pH and may gradually demineralise tooth enamel, causing tooth decay. A mildly basic toothpaste can react with and neutralise some of the excess acid, helping protect the enamel. Thus option A expresses the correct acid-base principle. Toothpaste does not dissolve enamel immediately, convert sugar into acid, or make the mouth’s pH zero; those statements are chemically incorrect.

Related tags

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

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