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Skeletal relapse following sagittal split ramus osteotomy advancement
Nanda Kishore Sahoo1, Balakrishnan Jayan1, Ankur Thakral2
1Department of Dental Surgery, Armed Forces Medical College, Pune, 411040 Maharashtra India.
Journal of Maxillofacial and Oral Surgery
|June 2, 2015
Summary
Sagittal split ramus osteotomy (SSRO) for mandibular advancement is a stable surgical procedure. This study found minimal relapse after SSRO, indicating predictable long-term outcomes for patients.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthognathic Surgery
- Craniofacial Development
Background:
- Sagittal split ramus osteotomy (SSRO) is a standard surgical technique for correcting mandibular deficiency.
- Post-surgical relapse following mandibular advancement negatively impacts both patients and clinicians.
Purpose of the Study:
- To evaluate hard tissue changes after SSRO.
- To investigate the skeletal relapse rates following SSRO mandibular advancement.
Main Methods:
- Retrospective analysis of 21 patients undergoing bilateral SSRO.
- Lateral cephalograms analyzed at pre-treatment, pre-surgery, 2 months, and 2 years post-surgery.
- Comparison of immediate postoperative changes (T2-T3) and long-term relapse (T3-T4).
Main Results:
- Mean mandibular advancement of 5.1 mm at pogonion with significant improvements in facial growth parameters.
- Minimal mean relapse of 0.2 mm at pogonion after 2 years.
- Stable mandibular corpus length, anterior, and posterior facial heights with no significant relapse.
Conclusions:
- Sagittal split ramus osteotomy is a stable procedure for mandibular advancement within the studied range.
- SSRO offers predictable skeletal stability and favorable long-term results.
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