Submitted in partial fulfillment of the requirements for the degree of Master in the
Science of Dentistry, in the department of Oral and Maxillofacial Surgery, at the
University of the Witwatersrand, Johannesburg. / The correction of most skeletal class II mandibular deficient cases require the surgical
advancement of the mandible for the treatment of the malocclusion. Often genioplasty is
included to the procedure to improve the soft tissue profile.2,30 Long term skeletal
stability is an important goal for the surgeon and orthodontist following Bilateral Sagittal
Split Osteotomy (BSSO) and is influenced by the muscles attached to the mandible.
Following the surgical advancement of the mandible the suprahyoid muscle complex is
certainly stretched and even more so when the procedure is combined with surgical
advancement of the chin.10,11
This retrospective comparative study determined the long term skeletal stability of 29
patients, whom had undergone surgical advancement of the mandible by means of BSSO
with advancement genioplasty, compared to 29 patients whom had undergone mandibular
advancement surgery (BSSO) without advancement genioplasty.
All the subjects were evaluated using pre-operative (T1), 1 week post-operative (T2)
and at least 6 months (T3) follow-up cephalometric radiographs.
This research report concluded that the post-operative hard tissue relapse following
BSSO advancement, with or without genioplasty, was clinically insignificant.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/13948 |
| Date | 03 1900 |
| Creators | Van der Linden, Carina |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | application/pdf |
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