Wisdom Teeth
Wisdom teeth, also known as third molars, are the last teeth to erupt in your mouth. This generally occurs between the ages of 17 and 25, a time of life that has been called the "Age of Wisdom."
Anthropologists note that the rough diet of early humans resulted in the excessive wear of their teeth. Normal drifting of the teeth to compensate for this wear ensured that space was available for most wisdom teeth to erupt by adolescence. The modern diet, which is much softer, and the popularity of orthodontic tooth straightening procedures produce a fuller dental arch, which quite commonly doesn't leave room for the wisdom teeth to erupt, thereby setting the stage for problems when the final four molars enter the mouth.
What is an Impacted Tooth?
A tooth becomes impacted when there
is a lack of space in the dental arch and
its growth and eruption are prevented
by overlying gum, bone or another tooth.
A tooth may be partially impacted, which
means a portion of it has broken through
the gum, or totally impacted and unable
to break through the gum at all.
a.Infection
How Serious is an Impacted Tooth?
Impacted and partially impacted teeth can
be painful and lead to infection.They may
also crowd or damage adjacent teeth or roots.

More serious problems may occur if the sac
surrounding the impacted tooth becomes filled
with fluid and enlarges to form a cyst. As the
cyst grows it may hollow out the jaw and
permanently damage adjacent teeth, the
surrounding bone and nerves. Rarely, if a
cyst is not treated, a tumor may develop from
its walls and a more serious surgical procedure may be required to remove it.
b. Crowding, damage
Despite the considerable concern regarding
impacted third molars, a recent study sponsored
by the American Association of Oral and Maxillo-
facial Surgeons and the Oral and Maxillofacial Surgery
Foundation finds that third molars which have broken
through the tissue and erupted into the mouth in a
normal, upright position may be as prone to disease
as those third molars that remain impacted.
Must the Tooth Come Out if it
Hasn't Caused Any Problems Yet?
Not all problems related to third molars
are painful or visible. Damage can occur
without your being aware of it.
As wisdom teeth grow, their roots become
longer, the teeth become more difficult to
remove and complications become more
likely. In addition, partially or totally impacted
wisdom teeth are more likely to cause problems
patients as they age. c. cysts
Complications may occur from
partially impacted teeth (fig. a,
No one can predict when third molar complications b.) and totally impacted teeth
will occur, but when they do, the circumstances can (fig. c.)
be much more painful and the teeth more difficult to
treat. It is estimated that about 85% of third molars
will eventually need to be removed.
When Should I Have My Wisdom Teeth Removed?
It isn't wise to wait until your wisdom teeth start to
bother you. In general, earlier removal of wisdom
teeth results in a less complicated healing process.
The AAOMS/OMSF study strongly recommends
that wisdom teeth be removed by the time the patient
is a young adult in order to prevent future problems
and to ensure optimal healing.The researchers found
that older patients may be at greater risk for disease,
including periodontitis, in the tissues surrounding the
third molars and adjacent teeth. Periodontal infections,
such as those observed in this study, may affect
your general health.
Wisdom Teeth Growth By Age
12 years 14 years
17 years 25 years
Wisdom teeth are easier to remove when the patient is younger,
since their roots are not completley formed, the surrounding bone
is softer,and there is less chance of injuring nearby nerves or other
structures. Removal of wisdom teeth at a later age becomes more
complicated as the roots have fully developed (may involve the nerve),
and the jawbone is denser.
What Happens During and After Surgery?
Before surgery, Dr.Homrighausen will discuss
with you what to expect. This is a good time to
ask questions or express your concerns. It is
especially important to let Dr. Homrighausen know
about any illness you have and medications you are taking.
The relative ease with which a wisdom tooth may be
removed depends on several conditions, including the
position of the tooth and root development. Partially
or totally impacted wisdom teeth may require a more
involved surgical procedure.
Most wisdom tooth extractions are performed in the
oral and maxillofacial surgery office under local
anesthesia, intravenous sedation or general anesthesia.
Dr. Homrighausen will discuss the anesthetic option that
is right for you.
Following surgery, you may experience some swelling
and mild discomfort, which are part of the normal healing
process. Cold compresses may help decrease the swelling,
and medication prescribed by Dr. Homrighausen can help
manage the discomfort. You may be instructed to modify
your diet following surgery and later progress to more normal foods.