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What is the main role of bacteria in tooth decay?

Answer and explanation

Correct answer: They produce acids from sugar

The governing concept is pH-dependent demineralisation. Bacteria in dental plaque metabolise sugars left in the mouth and release organic acids. These acids lower the local pH; when it becomes sufficiently low, minerals in enamel dissolve more readily, beginning tooth decay. Option A is correct. Bacteria do not turn teeth or saliva into metals, nor do they fill teeth with chlorine.

Related tags

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

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