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How does basic toothpaste protect teeth?

Answer and explanation

Correct answer: By neutralising acid formed in the mouth

After food is eaten, bacteria in the mouth may produce acids from sugars. These acids lower the pH and can gradually demineralise tooth enamel. Basic toothpaste contains mildly alkaline substances that react with and neutralise excess acid, helping to keep the mouth less acidic. Hence option A is correct. Dissolving enamel would worsen decay, pH zero is extremely acidic, and increasing acid cannot protect teeth.

Related tags

ToothpasteNeutralisationTooth DecayPhAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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