A tooth may be extracted
for many reasons. It may be too badly damaged or decayed,
to be saved by root canal therapy.
It could be causing crowding or malocclusion. It may be preventing
a tooth from erupting, or be loose from advanced periodontal disease.
A local anesthetic
is used to completely numb the area. In a simple extraction,
the dentist will grasp the tooth with forceps and rock it back
and forth to loosen the tooth from the alveolar bone by breaking
the ligaments that holds the tooth in place. When the tooth
is pulled, a blood clot will usually form in the socket.
If the tooth is not
fully erupted, it may be necessary to first remove some of the
overlying gum and bone tissue in order to access the tooth.
After the extraction,
the initial healing period typically takes from one to two weeks,
and some swelling and residual bleeding should be expected in
the next 24 hours.
It is important not
to dislodge the blood clot that forms on the wound. Occasionally,
this clot can break down leaving what is known as a dry socket.
This can cause temporary pain and discomfort that will subside
as the socket heals through a secondary healing process.
Proper care of the
area will affect the healing process. Smoking and allowing
food particles to pack into the socket should be avoided. In addition,
it is important to take any medication that the dentist prescribes.
Eventually, new bone
and gum tissue will grow into the gap left by the extraction.
The problem caused
by extraction is "bone colaps". This can be prevented by
placing an artifical bone substance when the tooth is extracted.
(This procedure can not be done in all cases. It should
be considered especially in front or side teeth, so the replacement
looks natural.)
Consequences:
Having a missing tooth can lead to several problems such as shifting
teeth, difficulty chewing, and malocclusion. Often a dentist
will attempt to restore the area with an implant,
fixed bridge, or a denture.