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Screw fixation after mandibular sagittal split osteotomy: an intra-oral approach
J P Shepherd1, C N Dohvoma, N W Harradine
1Department of Oral Medicine, Oral Surgery and Oral Pathology, University of Bristol Dental School.
The British Journal of Oral & Maxillofacial Surgery
|October 1, 1991
Summary
This study shows that intra-oral screw fixation for sagittal split osteotomies is a stable and reliable method. This technique avoids external incisions and offers comparable results to transbuccal screw fixation.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthognathic Surgery
- Surgical Fixation Techniques
Background:
- Sagittal split osteotomy is a common procedure for correcting jaw deformities.
- Traditional fixation methods often involve external approaches, leading to potential complications.
- There is a need for minimally invasive and stable fixation techniques.
Purpose of the Study:
- To evaluate the feasibility and stability of intra-oral rigid, non-compressive screw fixation for sagittal split osteotomies.
- To compare the outcomes of intra-oral fixation with traditional transbuccal screw fixation.
Main Methods:
- A feasibility study involving 10 consecutive sagittal split osteotomies.
- Intra-oral fixation using 3.5 or 2.7 mm AO screws.
- Stability assessed via digitized cephalometry at multiple time points (pre-op, 24-48h, 6 months).
Main Results:
- The intra-oral fixation method was straightforward and reliable.
- Horizontal relapse at 6 months was minimal (mean 0.6 mm, 8% of operative movement).
- Stability was comparable to transbuccal screw fixation, with no external incisions required.
Conclusions:
- Stable screw fixation for sagittal split osteotomies can be achieved using an intra-oral approach.
- This technique offers a viable alternative to external fixation methods.
- Further investigation may be warranted for specific patient populations or complex cases.