Evaluation of Masseter Electric Activity following Bilateral Sagital Split Osteotomy in Patients with Mandibular Retrognathism
نویسندگان
چکیده
Bilateral sagittal split osteotomy (BSSO) in order or advance mandible is a common surgery for patients with mandibular retrognathism. While various complications could result after this surgery, the aim of the present study was to evaluate the effect of BSSO surgery on electric activity and function of masseter muscle. 36 patients in need of mandibular advancement with BSSO technique participated in the present study. At three time points including prior the surgery, 3months, and 6 months after electromyography (EMG) of the masseter was recorded. The results indicated that the electric function of the muscle decreased significantly after 3 months (P-value < 0.05); however, no significant difference was observed between baseline and 6 month follow up EMG values (P-value > 0.05). According to the results of the present study, orthognathic surgery of retrognathic mandible lead to transient alterations of masseter muscle activity which would be resolved after 6 months.
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Complications of Bilateral Sagittal Split Osteotomy in Patients with Mandibular Prognathism
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