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प्रश्न
Heshna and Keerthi are friends. Keerthi’s teeth are white without caries, but Heshna has teeth with caries. Why? How is it formed?
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उत्तर
- Caries are caused by the action of acids on the enamel surface.
- The acid is produced when sugar in foods or drinks reacts with bacteria present on the tooth surface.
- Heshna has not cleaned her teeth well after sipping sugary drinks and snacking.
- She has to brush after meals and before bed.
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संबंधित प्रश्न
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