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Below which pH range is the risk of tooth enamel dissolving considered higher?

Answer and explanation

Correct answer: Below about 5.5

Tooth enamel is mainly a calcium-containing mineral that is vulnerable to acidic conditions. Oral bacteria can convert sugars into acids, lowering the pH at the tooth surface. When the pH falls below approximately 5.5, demineralisation of enamel becomes more likely and tooth decay risk increases. Therefore option A is correct. Values above neutral or strongly alkaline values do not represent this usual acid-dissolution threshold.

Related tags

Tooth EnamelCritical PhTooth DecayAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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