| Dental
Sealants
Since the 1950s, dental sealants have served as an
effective and preventative measure to help ensure the sound structure
of teeth. Sealants are made of a thin plastic material, and they
provide a physical barrier between the grooved surfaces on the teeth
and the bacteria that attack and cause cavities. Sealants differ
from fluoride in that fluoride strengthens and remineralizes the
smooth surfaces of teeth, while sealants protect the grooved exterior.
Because they do not involve drilling or resculpting the original
structure of the tooth, dental sealants are a popular and painless
alternative to these more involved procedures. Dental sealants save
time and money by eliminating the need for future fillings and dental
visits.
The Process
The dentist or dental assistant first thoroughly
cleans the teeth to be sealed with special toothpaste. In order
to allow the sealant to bond to the teeth, a solution is applied
that etches the grooves of the teeth. The solution is then completely
wiped from the teeth. The dentist then applies the sealant by "painting"
it into the grooves of each tooth. After approximately one minute,
the sealant dries and forms a protective bonding with the tooth.
Effectiveness of Dental Sealants
Sealants are most effective in teeth that have
recently erupted through the gumline and have not yet been exposed
to decay. Children between the ages of 5 and 15 are typically the
best candidates since their permanent teeth are growing into their
mouths. Teeth that are marked by deep grooves or curves are less
receptive to the bonding material. Dental sealants are typically
not visible except at close range. On average, they are effective
for five to ten years, at which time they may need to be reapplied.
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