This Patient
presented with a deformity of the jaws called "Apertognathia",
or "open bite. Even in a closed position her
teeth do not meet |
Before surgery,
this patient has difficulty chewing and speaking,
and has a pronounced upper jaw |
After surgery,
her teeth meet correctly |
After surgery,
this patient can chew and speak normally, and has
balanced facial features |
Common
Types Of Orthognathic Deformities and How they are Corrected |
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What
Causes Jaw Deformities? |
An improper bite or "malocclusion" can result
from different rates of growth in the upper and lower
jaws, birth defects, or injury. If only the teeth are
involved, orthodontics is often employed alone to correct
the problem. However, if the jaws themselves need to
be realigned, orthognathic surgery may be prescribed.
In addition, some people have facial abnormalities involving
just the upper face, cheek bones, and nose. These can
also be surgically corrected. The bones are repositioned
so the facial features are more symmetrical.
Orthognathic Surgery | Top
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The following are
some of the conditions that may indicate a need for
orthognathic surgery:
-Difficulty chewing or biting food
-Difficulty swallowing
-Speech problem
-Chronic jaw pain
-Excessive wearing of teeth
-Open bite (space between upper and lower front of
back teeth when mouth is closed)
-Unbalanced facial appearance
-Facial injury or birth defects
-Receding chin
-Protruding jaw
-Inability to make lips meet without effort
-Chronic mouth breathing with dry mouth
-Sleep apnea (breathing problems when sleeping such
as snoring, difficulty breathing, etc.)
Orthognathic Surgery | Top
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What Is Involved
in Corrective Jaw Surgery?
Before your surgery, orthodontic braces move
the teeth into a new position. Because your teeth are being
moved into a position that will fit together after surgery,
you may at first think your bite is getting worse rather than
better. When your Oral and Maxillofacial Surgeon repositions
your jaws during surgery, however, your teeth should fit together
properly.
As your pre-surgical orthodontic treatment
nears completion, additional or updated records, including
x-rays, pictures and models of your teeth, may be taken to
help guide your surgery.
Depending on the procedure, corrective jaw
surgery may be performed under general anesthesia in a hospital,
an ambulatory surgical center or in the oral and maxillofacial
surgery office. Surgery may take from one to several hours
to complete.
Your Oral and Maxillofacial Surgeon will
reposition the jawbones in accordance with your specific needs.
In some cases, bone may be added, taken away or reshaped.
Surgical plates, screws, wires and rubber bands may be used
to hold your jaws in their new positions. Incisions are usually
made inside the mouth to reduce visible scarring; however,
some cases do require small incisions outside of the mouth.
When this is necessary, care is taken to minimize their appearance.
After surgery, your surgeon will provide
instructions for a modified diet, which may include solids
and liquids, as well as a schedule for transitioning to a
normal diet. You may also be asked to refrain from using tobacco
products and avoid strenuous physical activity.
Pain following corrective jaw surgery is
easily controlled with medication and patients are generally
able to return to work or school from one to three weeks after
surgery, depending on how they are feeling. While the initial
healing phase is about six weeks, complete healing of the
jaws takes between nine and 12 months.
*some illustrations
and excerpts of text copyright
2005 by the American Association of Oral and Maxillofacial Surgeons.
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