Vertical Ramus Osteotomy With Iliac Graft Versus Sagittal Split Osteotomy

Condition(s) studied

Investigational drug(s) / intervention(s)

vertical ramus osteotomy with iliac graft: in the VRO group all patient will undergo vertical ramus osteotomy surgery with iliac graft to correct the sever mandibular defficiency

bilateral sagittal splitting osteotomy: all patients in this group will undergo to bilateral sagittal split osteotomy to correct the sever mandibular deficiency

Study summary

* Patients will be collected from faculty of dentistry
* bilateral vertical ramus osteotomy (VRO )with iliac graft group (group I):- 10 patients will be treated via VRO and iliac crest or
* bilateral sagital spilt osteotomy (BSSO) group (group II):- 10 patients will be treated via BSSO
* All patients will be studied by comprehensive clinical oral and maxillofacial examination and lateral cephalometric radiographic analyses, within 1 week before the surgery (T0), immediately after the surgery (T1), and 6 months after surgery (T2).
* All lateral cephalometric radiographs and clinical photographs must be standardized for all cases.
* After pre-surgical orthodontic treatment , a lateral cephalograph Will be obtained for planning the surgical movement of both jaws
* Surgical models and surgical stent will be fabricated.
* All surgical procedures will be performed under nasal intubation and general anesthesia to surgically reposition the maxilla in standard LeFort I setback fosteotomy; the BSSO group will be underwent BSSO, and VRO group will be underwent VRO
* The bony segments will be fixed in the new position with the use of custom made plates (specific for each patient )

Eligibility

Primary outcome measure(s)

• skeletal stability — 6 months
  Skeletal stability will be assessed by lateral cephalometric x-ray. It will be done pre operatively, immediate postoperative, and 6 months later

Trial sites (1)

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