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Wisdom
teeth, or third molars, do not always erupt properly when they
decide to make an appearance. It’s wise to get an early
opinion from your dentist on getting wisdom teeth pulled before they
become impacted, causing pain, swelling, infection, cavities or gum
disease.
Why don’t wisdom teeth grow in right?
The shape of the modern
human mouth is often too small to accommodate wisdom teeth which
make their first appearance in young adults between
the ages of 15 to 25. Over the course of time, humans learned to
harness fire for cooking foods and developed blade tools to better
process food before consumption, they reduce the need for strong
jaws to chew food. According to studies of ancient skull specimens,
over time, a full set of teeth in a smaller jaw caused crowding in
permanent teeth because of lack of space.
What does “impacted’ mean?
When wisdom teeth don’t
have room to grow or they haven’t
reached their final position by 25, they are considered impacted-
no place to go and no plans to grow. Third molar impaction is the
most prevalent medical developmental disorder. A full set of healthy
teeth sometimes doesn’t leave much room for wisdom teeth to
erupt.
What kind of problems can impacted third molars cause?
Partially
erupted wisdom teeth are breeding grounds for bacteria and germs
that may cause infection, and cysts and tumors may grow
on a trapped wisdom tooth. Jaw pain and gum disease may occur. Not
all wisdom teeth cause problems, however.
Can’t I just use and
antibiotic?
Antibiotics only sooth infected wisdom teeth for a
short time. Since people frequently use a wide variety if antibiotics,
the
infection
may be resistant to such medication and doesn’t solve the
problem: the tooth can’t fit in your mouth.
When is removal
necessary?
It isn’t wise to wait until wisdom teeth bother
you. Early removal, as advised by your dentist, is generally recommended
to
avoid problems, such as an impacted tooth that destroys the second
molar. People younger than 16 heal easier too. At an early age,
people should be evaluated by their dentist who can track third
molar development
with the help of x-rays. Second molars should be visible to lessen
the chance of damaging them during surgery. This occurs at age
11 or 12, so wisdom teeth should be removed when the decision has
been
made that they cannot erupt into an acceptable position.
What if
I don’t have any symptoms?
People with symptoms of impaction,
such as pain, swelling and infection should have heir wisdom
teeth pulled immediately. However, those
with no symptoms can avoid the chance of ever suffering from
the pain of impacted wisdom teeth or achieve better orthoontic
treatment
results by having them removed. Asymptomatic impacted wisdom
teeth also should be removed to reduce the chance of unexplained
pain,
accommodate prosthetic appliances, or avoid cavities, periodontal
disease, bone shrinkage and tumor development.
How is the tooth
removed?
Surgery for impacted wisdom teeth consists of removing
of the gum tissue over the tooth, gently stripping
connective tissue away from the tooth and bone, removing
the tooth and sewing
the gum back up.
Updated July 1997
Sources: William howard, DMD, MAGD; “the
management of third molar teeth,” Dentoalveolar Surgery,
Feb. 1993; “Impacted
lower wisdom tooth: To remove of to leave a lone,” Dental
Update, July/August 1994; “Surgical removal of third molars,” British
Medical Journal, sept. 1994; “Impactions: Observe or treat?” West
Virginia Dental Journal, Oct. 1994; “Diseases and lesions
associated with third molars,” Oral Surgery Oral Medicine
Oral Pathology, Feb. 1995; “Early removal of wisdom teeth
can prevent an array of problems,” Georgia Dental Assoc.
Action, March 1994; “Patient’s anxieties with third
molar surgery,” British Journal of Oral and Maxillofacial
Surgery. Dec. 1994; “Infections in elderly patients associated
with impacted third molars,” oral Surgery oral Medicine Oral
Pathology, Feb. 1995
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