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Dental sealants act as a
barrier, protecting the teeth against decay-causing
bacteria. The sealants are usually applied to the chewing
surfaces of the back teeth (premolars and molars) where
decay occurs most often.
How does a sealant help prevent decay?
A sealant is a plastic material that is usually applied
to the chewing surfaces of the back teeth — premolars
and molars. This plastic resin bonds into the depressions
and grooves (pits and fissures) of the chewing surfaces
of back teeth. The sealant acts as a barrier, protecting
enamel from plaque and acids.
Thorough brushing and flossing help remove food particles
and plaque from smooth surfaces of teeth. But toothbrush
bristles cannot reach all the way into the depressions
and grooves to extract food and plaque. Sealants protect
these vulnerable areas by "sealing out" plaque
and food.
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Is sealant application a complicated procedure?
Sealants are easy for your dentist to apply, and it
takes only a few minutes to seal each tooth. The teeth
that will be sealed are cleaned. Then the chewing surfaces
are roughened with an acid solution to help the sealant
adhere to the tooth. The sealant is then 'painted' onto
the tooth enamel, where it bonds directly to the tooth
and hardens. Sometimes a special curing light is used
to help the sealant harden.
As long as the sealant remains intact, the tooth surface
will be protected from decay. Sealants hold up well
under the force of normal chewing and usually last several
years before a reapplication is needed. During your
regular dental visits, your dentist will check the condition
of the sealants and reapply them when necessary.
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Sealants are just for kids, right?
The likelihood of developing pit and fissure decay
begins early in life, so children and teenagers are
obvious candidates. But adults can benefit from sealants
as well.
Key ingredients in preventing tooth decay and maintaining
a healthy mouth are twice-daily brushing with an ADA-accepted
fluoride toothpaste; cleaning between the teeth daily
with floss or interdental cleaners; eating a balanced
diet and limiting snacks; and visiting your dentist
regularly. Ask your dentist about whether sealants can
put extra power behind your prevention program.
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