Many adults 65 and older who didn't learn the importance of oral hygiene earlier in life don't understand the importance of preventive dental care. For denture-wearers, the buildup of plaque can irritate the tissues under the dentures. Clean dentures thoroughly every day. Also, see a dentist at least once a year to be sure dentures fit properly and that gum tissues are disease free. While people commonly associate cavities with children, tooth decay can occur at any age.
Bacteria stick to the teeth and form a sticky, colorless film called plaque.
In children, cavities affect the crown of the tooth. In older people, decay occurs more often at the root surface. Root cavities tend to grow quickly in older adults with receded gum lines, a condition that occurs with advancing age. Regular brushing and flossing can protect against tooth decay. Dry mouth can be a side effect of certain medications and can lead to tooth decay, gum disease and sore mouth.