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Tooth decay may begin when the pH in the mouth falls below 5.5. Which type of toothpaste is most suitable for cleaning teeth in this situation?

Answer and explanation

Correct answer: A mildly basic toothpaste

A pH below 5.5 indicates an acidic condition in which acids can dissolve or weaken tooth enamel. A mildly basic toothpaste helps neutralise some of these acids and raises the pH toward a safer value, so option A is correct. Strongly acidic toothpaste would worsen the condition, distilled water has little neutralising ability, and concentrated salt solution is not the appropriate treatment.

Related tags

Acids Bases SaltsPh ScaleTooth DecayNeutralisationDaily Life ChemistryAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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