Protruding jaw (Prognathia) is a situation where the lower jaw is too large and grows too far forward. Jaw surgery can be used to slide the lower jaw back.
Protruding jaw surgery is done to rectify abnormalities of the lower jaw (mandible), which may be too large or too small. The jaw can be advanced or repositioned surgically.
The most common operation to advance or retract the jaw is called a sagittal split osteotomy. This type of surgery allows for the placement of bone screws or plates. Consequently, the jaws do not have to be wired together at the end of the procedure. The operation is performed almost entirely from inside the mouth to minimize visible scars on your face. It is performed under general anaesthesia.
When your oral and maxillofacial surgeons complete the evaluations, they may prepare a treatment plan according to the patient's body language. Once they have discussed your treatment plan with you, take time to weigh the benefits and risks of surgery and then make your decision. Before making your commitment, remember that braces move your teeth for the bite you will have after surgery. Changing your mind in the middle could make your bite worse.
People who can potentially benefit from orthognathic surgery include those with an improper bite or those with jaws that are in disposition. Jaw growth is a slow and gradual process and in some instances the upper and lower jaws may grow at different rates. The result can be a host of problems that may affect chewing function, long-term oral health, speech and appearance. Injury to the jaw and birth defects can also affect jaw alignment.