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Q: Which areas of our teeth are prone to decay, and what preventative
measures are there?
A: Dental decay, also called dental caries, can develop on three
specific areas of the tooth: in the pits and fissures that are
generally on the chewing, or occlusal, portion of the tooth; in
the smooth enamel sides of the tooth; and in the root. In children,
about 60 percent of all cavities occur in pits and fissures, either
on the chewing surface or in pits and grooves in teeth that didn't
form properly. Sealants can help prevent decay in pits and fissures.
Smooth surface decay usually occurs in the sides of teeth that
face each other. Those are called the proximal surfaces. Since
toothbrush bristles don't effectively reach these surfaces, flossing
is important to break up the plaque that holds the acid against
the enamel.
Root caries, as the name states, occurs on the tooth's root. This
normally afflicts older people whose gums have receded, exposing
the root to the perils of the oral environment. Cancer patients
who have had radiation treatment of the head and neck are also
especially prone to root cavities. Talk with your dentist for more
information on the process of tooth decay and how you can avoid
it.
June 29, 2009
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