Special Concerns for Older Adults Along with those gray hairs and inevitable smile lines, your mouth undergoes natural changes over the years, as well. Among them: Cutting edge of teeth are worn flat by chewing or grinding. Remember to keep regularly scheduled hygiene appointments to check for cavities. Consider dental sealants to prevent decay, or a nighttime mouthguard if you experience grinding (bruxism). Jawbones supporting teeth or dentures can shrink [...]