What are dental
sealants?
Dental sealants are thin, plastic films painted on the
chewing surfaces of the back teeth -- molars and
premolars -- and are highly effective in the prevention
of tooth decay (caries and cavities). Dental sealants are
particulary effective on the back teeth, as the back
teeth contain more hard-to-reach pits and grooves that
serve as a host to food debris and plaque build-up.How effective are dental
sealants?
Because the sealants act as a physical barrier to decay
and plaque build-up, in most cases, they provide 100
percent protection -- with the most important variable
being how well the dental sealant adheres to the teeth.
In addition, research has shown that sealants actually
stop cavities when placed on top of a slightly decayed
tooth. This action seals off the supply of nutrients to
the bacteria that causes the cavity. The dental sealant
becomes ineffective when all or part of the bond between
the tooth and the sealant is broken.
Who are likely
candidates for dental sealants?
Sealants are especially beneficial for children because
their newly erupted, permanent teeth are most susceptible
to cavities and least benefited by fluoride. However,
patients of all ages can benefit from dental sealants.
What does the
procedure involve?
The procedure starts with cleaning the surface of the
tooth, rinsing the surface to remove all traces of the
cleaning agent, and drying the tooth. A solution or gel
is applied to the surface of the tooth, including the
pits and grooves, to make the surface of the tooth rough.
After several seconds, the solution is thoroughly rinsed
away with water and the site is dried. The liquid sealant
is then applied and allowed to harden.
With proper oral hygiene,
sealants may last 5 to 10 years
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