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Per NCERT 'Dental caries' box, what causes tooth decay?
ABacteria acting on sugars produce ACIDS that demineralise (soften) the enamel and dentine; plaque traps the acids
BDrinking too much water
CHot drinks alone
DGenetics only
Answer & Solution
Correct answer: A. Bacteria acting on sugars produce ACIDS that demineralise (soften) the enamel and dentine; plaque traps the acids
Per NCERT §5.2.4 Dental Caries box, bacterial acids on sugars erode enamel + dentine; plaque exacerbates.
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