BSSO SURGERY PDF
Orthognathic surgery); also known as corrective jaw surgery or simply jaw surgery, is surgery designed to correct conditions of the jaw and face related to. Faculty of Dental Medicine Al-Azhar UniversityOrthognathic surgery is the Bilateral sagittal split osteotomy (BSSO) has a wide range of. Mandibular osteotomies in Orthognathic Surgery Mandibular Recently good stability after BSSO is also shown by polylactate bone plates and.
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SuiteHouston, TXude. A potentially significant long-term outcome of orthognathic surgery is impaired maxillary growth, due to scar tissue formation. Surgical procedures to correct mandibular prognathism and reshaping of the chin.
Hullihen and the origin of orthognathic surgery. Maintaining the surgical dissection subperiosteally and adequate retraction of soft tissue prevent minor intraoperative oozing and most cases of major hemorrhage. Care must be taken as to not injure the inferior palatine artery. Common analyses include Steiner, Ricketts, and Delaire; however, these are beyond the scope of this overview.
The dental osteotomy allows surgeons to visualize the jawbone, and work accordingly. A modified intraoral sagittal splitting technic for correction of mandibular prognathism. Surgical movements of the maxilla and mandible inherently alter the maxillary-mandibular dental occlusion, and as such, careful analysis of the dental models with the orthodontist is essential. Instead, the surgeon is often able to go through the interior of the mouth.
For this procedure cuts are made behind the molarsin between the skrgery and second molarsand lengthwise, detaching the front of the jaw so the palate including the teeth and all can move as one unit. Effects of age, amount of advancement, and genioplasty on neurosensory disturbance after a bilateral sagittal split osteotomy. A disproportionately grown upper or lower jaw causes dentofacial deformities.
Rigid internal fixation was introduced in by Spiessel to promote healing, restore early function, and decrease relapse. Prior to the procedure, the orthodontist has an orthopedic appliance attached to the maxilla teeth, bsao, extending over the palate with an attachment so the surgeon may use a hex-like screw to place into the device to push from anterior to posterior to start spreading the bony segments.
A point is identified at just above halfway up the anterior border of the ramus, and the mucosa is incised with electrocautery continuing inferiorly, lateral to the external oblique ridge, to the second molar, where the incision continues more laterally into the vestibule down to the distal first molar. From Wikipedia, the free encyclopedia.
Numerous cephalometric analyses exist, each emphasizing particular skeletal and dental elements. Patients also may not drive or operate vehicles or large machinery during the consumption of painkillers, which are typically bsdo for six to eight days after the surgery, depending on the pain experienced.
Views Read Edit View history. Orthognathic surgery Relationship between mandible and maxilla. These blocks are infiltrated into the submucosa anteriorly in the buccal vestibule and along the ascending ramus.
Trauner R, Obwegeser H. Int J Oral Maxillofac Surg. The most common of the LeFort procedures, this procedure corrects problems such as a “gummy” smile, long face or overbite by repositioning the upper jaw. Once the osteotomy is complete, check that each segment is free of the other and that the condylar head is still attached to the proximal segment.
However, several cases have been reported in the literature.
BSSO | Lower Jaw Advancement Surgery » Profilo° Surgical
Proffit ; Raymond P. Obtain quantitative measurements based on key anatomic landmarks cephalometric analysis. During this surgery, the upper jaw, as well as some of the facial bone, is repositioned. This procedure is commonly used to enhance the results of a jaw lengthening procedure or to improve facial balance following a nose surgery. Proximal segment fractures occur most often as a result of failure to completely cut the inferior border; this results in a fracture line that propagates along the buccal side of the inferior border.
The jaw is then wired shut for approximately 4—5 weeks. Then, soft tissue of the mandible is detached from the bone; done by stripping attaching tissues. The patient is placed in supine position on the operating table with general nasotracheal intubation and is prepared and draped for an intraoral procedure, with the entire face and neck within the field.
A bilateral sagittal split osteotomy BSSO is a surgery aimed at correcting a lower jawbone that is too short or too long.
Undertaking the correction of these deformities bssso a thorough knowledge of the indications, technique, and complications of the sagittal split osteotomy. Background Orthognathic surgery involves the surgical correction of the components of the facial skeleton to restore the proper anatomical and functional relationship in patients with dentofacial skeletal abnormalities. History The history of orthognathic surgery of the mandible started with Hullihen inwho performed an osteotomy of the mandibular body bsxo the correction of prognathism.
There are several determinants of the optimal modification for BSSO in an individual patient, including the position of the mandibular foramen lingualcourse of the inferior alveolar nerve in the mandible, presence of the mandibular third molars, and planned direction and magnitude of distal segment movement.
Standardized photos are required not only for documentation and photometric analysis, but for evaluation of outcomes as well. The operative surgeon should be well versed in the history, anatomy, technical aspects, and complications of the bilateral sagittal split osteotomy to fully understand the procedure and to counsel the patient. The osteotomy is then finished with small curved osteotomes, taking care to direct the curve buccally and to protect the soft tissues with a channel retractor.
As the split is opening, check the position of the inferior alveolar nerve, if it is hung up either on the lateral or proximal segment, use a blunt elevator to gently release it. Operating on the upper jaw requires surgeons to make incisions below both eye sockets, making it a bilateral osteotomy, enabling the whole upper jaw, along with the roof of the mouth and upper teeth, to move as one unit.
MonsonMD 1. Also, a total maxilla osteotomy is used to treat the “long face syndrome,” known as the skeptical open bite, idiopathic long face, hyper divergent face, total maxillary alveolar hyperplasia, and vertical maxillary excess.
The cut is made through the cortical bone and into the cancellous bone, and then the saw is turned and the cut continued anteriorly down the external oblique ridge to the level of the second molar.
Impacted third molars are another cause of unfavorable fractures and should ideally be removed 6 months to 1 year prior to mandibular surgery.
Your teeth may need to be orthodontically aligned before undergoing Lower Jaw Surgery. All dentofacial osteotomies are performed under general anesthesiacausing total unconsciousness. Oscillating saws are angled, to different degrees, in order to make deep curved cuts sugrery certain osteotomies like mandible angle reduction.