What is sagittal split Ramus osteotomy?
Sagittal split mandibular ramus osteotomy is one of the most frequently employed surgical procedures in orthognathic surgery, and is used to advance, set-back and rotate the distal (tooth-bearing) segment of the mandible. The original technique, described by Trauner and Obwegeser,1 has seen a number of modifications.
What is Ramus osteotomy?
The vertical ramus osteotomy is a procedure whereby full thickness osteotomies of the rami are performed. When performed bilaterally they divide the mandible into two smaller condyle bearing segments and a large segment consisting of the anterior ramus and mandibular body including the teeth and chin.
How long does mandibular osteotomy take?
During surgery Most surgeries take 2 to 5 hours, but the exact length of time depends on the specific procedure being performed. During jaw surgery, most of the incisions are made inside your mouth, although in some cases very small incisions will be made on the outside.
What is a LeFort procedure?
During the LeFort I surgery, the upper jaw (or maxilla) is separated from the rest of the face and repositioned. This repositioning of the bones of the face is also called orthognathic surgery. Once separated, the upper jaw can be moved up, down, forward, backward, tilted, or turned.
What is the alveolar nerve?
The superior alveolar nerves are all branches of the maxillary nerve, which is the second branch of the trigeminal nerve. The inferior alveolar nerve, which is small in length, is a branch of the mandibular nerve, which is the third branch of the trigeminal nerve.
What is facial Prognathism?
Prognathism is an extension or bulging out (protrusion) of the lower jaw (mandible). It occurs when the teeth are not properly aligned due to the shape of the face bones.
What is osseous Genioplasty?
Osseous genioplasty, the alteration of the chin through skeletal modification, can lead to significant enhancement of the overall facial profile.
What is Ramus of mandible?
The rami are two vertical processes located on either side of the body; they join the body at the angle of the mandible. At the superior aspect of each ramus, the coronoid and condylar processes articulate with the temporal bone to create the temporomandibular joint which permits mobility.
How does a Genioplasty work?
The surgeon cuts along the border of the lower gums and the inside of the lower lip. The surgeon makes an incision in the layer of soft tissue to access the chin bone. Once the chin bone is exposed, the surgeon makes a small vertical cut in the chin, which they use as a reference point during the operation.
How long does it take to recover from Maxillofacial surgery?
Initial jaw healing typically takes about six weeks after surgery, but complete healing can take up to 12 weeks. After initial jaw healing — at about six weeks — your orthodontist finishes aligning your teeth with braces.
What is Genioplasty surgery?
A genioplasty is when you get surgery to alter your chin. You may get this surgery to reconstruct your chin or jaw. Your doctor might suggest a genioplasty if you have problems with your upper airways. Or you may want a genioplasty for esthetic reasons. Genioplasty is typically done by plastic surgeons.
What is a 3 piece LeFort?
LeFort 3 distraction is surgery to reposition the cheek bones, orbits and upper jaw. “Distraction” means the bones are moves slowly over several weeks, in order to achieve a larger movement and less relapse.
What is bilateral Sagittal Split Osteotomy?
The bilateral sagittal split osteotomy is an indispensable surgical procedure for the correction of mandibular deformities. Undertaking the correction of these deformities requires a thorough knowledge of the indications, technique, and complications of the sagittal split osteotomy.
What are the indications for a bilateral sagittal split?
Indications for a bilateral sagittal split include horizontal mandibular excess, deficiency, and/or asymmetry. It is the most commonly performed procedure for mandibular advancement and can also be utilized for a mandibular setback of small to moderate magnitude.
What is the history of mandibular osteotomy?
The first mandibular osteotomy is considered to be Hullihen’s1procedure in 1849 for the correction of a protruded alveolar mandibular segment. The first osteotomy of the whole mandibular body for the correction of prognathism was performed by Blair2in 1897. He was also the first author to present a classification of jaw deformities.