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How does basic toothpaste help protect teeth?

Answer and explanation

Correct answer: By neutralising acids formed in the mouth

After food is eaten, bacteria in the mouth can break down sugars and produce acids. These acids lower the local pH and may dissolve minerals from tooth enamel, increasing the risk of decay. A mildly basic toothpaste reacts with and neutralises some of these acids, helping restore a safer pH. Therefore option A is correct. The other choices would damage teeth or describe chemically impossible effects.

Related tags

ToothpasteNeutralisationTooth DecayAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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