Each group represents situations presenting high caries risk,except one.Which is the exception?

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Although vegans are often deficient in protein,they are not at high risk for caries.Their strict adherence to plant-based diets generally precludes foods highly associated with increased caries risk.Note that polypharmacy is a term referring to patients taking numerous medications.Xerostomia,or dryness of the oral tissues,is a frequent side effect of multiple medications,which significantly increases caries risk.

Each Group Represents Situations Presenting High Caries Risk,except One