Sagittal Split Osteotomy Orthognathic surgery

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oral palate unit.


this procedure used correct mandible retrusion , mandibular prognathism (over , under bite). first, horizontal cut made on inner side of ramus mandibulae, extending anterally anterior portion of ascending ramus. cut made inferiorly on ascending ramus descending ramus, extending lateral border of mandible in area between first , second molar. @ time, vertical cut made extending inferior body of mandible, inferior border of mandible. cuts made middle of bone, bone marrow present. then, chisel inserted pre existing cuts , tapped gently in areas split mandible of left , right side. here, mandible can moved either forwards or backwards. if sliding backwards, distal segment must trimmed provide room in order slide mandible backwards. lastly, jaw stabilized using stabilizing screws inserted extra-orally. jaw wired shut approximately 4–5 weeks.



facial anatomy.








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