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Which condition is more favourable for the beginning of tooth decay?

Answer and explanation

Correct answer: Mouth pH is below 5.5

Tooth enamel is damaged more readily when the mouth becomes acidic. A pH below about 5.5 is commonly taken as the critical level at which enamel minerals begin to dissolve more significantly, increasing the risk of decay. Therefore, option B is correct. A neutral pH near 7 and absence of acid are less favourable for decay, while pH 14 is strongly alkaline and not the stated condition.

Related tags

Tooth-DecayEnamelPhToothpasteClass10AcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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