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Patient Specific Intraoral Inverted-L Osteotomy Modified With Inferior Alveolar Nerve Relocation in Corrective Mandibular Surgery

Class III Malocclusion Clinical Trial

Official title:
Patient Specific Intraoral Inverted-L Osteotomy Modified With Inferior Alveolar Nerve Relocation in Corrective Mandibular Surgery

Clinical Trial Summary

Bilateral sagittal split osteotomy (BSSO) is considered the main osteotomy design in corrective mandibular surgery, however abnormal anatomical configuration of the posterior mandible with rolled out inferior border and thin mandibular rami with cortically adherent inferior alveolar nerve may interfere with the utilization of this osteotomy. The aim of this study is to introduce a novel modification of the intraoral inverted L ramus osteotomy (ILRO) to overcome these limitations in mandibular setback surgery. preoperative CBCT was requested for virtual planning and fabrication of cutting and drilling guides. Cutting lines were outlined to be consisted of four cuts; lateral ostectomy to uncover and lateralize the inferior alveolar nerve (IAN), posterior cut run horizontally from the anterior border of the ramus to a point just above the mandibular foramen, two anterior vertical cuts run from the anterior end of the lateral ostectomy to the inferior mandibular border. The guide was removed and the osteotomy lines were completed then the mandibular setback was oriented and fixed using pre-bent plates osteosynthesis. Inferior alveolar nerve function was regained perfectly one year post-operatively. This procedure introduces a robust alternative to the BSSO osteotomy in some cases of mandibular setback surgery.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05397002
Study type Interventional
Source Cairo University
Contact
Status Completed
Phase N/A
Start date October 1, 2020
Completion date April 10, 2022
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