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Sagittal split technique. III. Postoperative rest conditions. A radiographic follow-up study
International Journal of Oral Surgery
|April 1, 1979
Summary
Sagittal split osteotomy can lead to significant increases in mandibular angle and decreases in ramus width in many patients. These morphological changes suggest unsatisfactory outcomes, warranting technique modifications.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthognathic Surgery
- Radiology
Background:
- Sagittal split osteotomy is a common procedure in orthognathic surgery.
- Assessing long-term postoperative changes is crucial for evaluating surgical outcomes.
Purpose of the Study:
- To evaluate the long-term radiological changes following sagittal split osteotomy.
- To determine the frequency and magnitude of mandibular angle and ramus width alterations.
Main Methods:
- Radiological assessment of 26 patients 11-53 months post-surgery.
- Comparison of postoperative measurements with pretreatment values.
- Statistical analysis of changes in mandibular angle and ramus width.
Main Results:
- 75% of patients showed a statistically significant increase in mandibular angle.
- In 70% of cases, the mandibular angle increased by 1-10 degrees.
- 25% experienced no change or a decrease in mandibular angle; ramus width decreased in many cases.
Conclusions:
- Postoperative radiological findings indicate significant morphological changes after sagittal split osteotomy.
- The observed changes, including increased mandibular angle and decreased ramus width, are considered unsatisfactory.
- Modification of the sagittal split osteotomy technique may be necessary to improve outcomes.