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Masseter microvascular perfusion after minimally invasive sagittal split ramus osteotomy: A long-term split-mouth
Mert Şahin1, Canay Yılmaz Asan1, Aykağan Çukurluoğlu2
1Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Erciyes University, Kayseri, Türkiye.
Summary
Minimally invasive sagittal split ramus osteotomy (MISSRO) preserves long-term masseter muscle microvascular perfusion better than conventional SSRO. This finding suggests MISSRO may offer advantages for masticatory muscle health after orthognathic surgery.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthognathic Surgery
- Vascular Imaging
Background:
- Sagittal split ramus osteotomy (SSRO) is a common orthognathic procedure impacting masticatory muscles.
- Long-term effects of minimally invasive SSRO (MISSRO) on masseter muscle vascularity are not well understood.
Purpose of the Study:
- To compare long-term masseter muscle microvascular perfusion between conventional SSRO and MISSRO.
- To evaluate the impact of surgical technique on masticatory muscle vascularity post-orthognathic surgery.
Main Methods:
- A split-mouth, cross-sectional observational study involving 21 patients undergoing bilateral SSRO.
- Superb microvascular imaging (SMI) quantified microvascular perfusion (vascular index, VI).
- Masseter muscle thickness was assessed using B-mode ultrasonography.
Main Results:
- The MISSRO side demonstrated significantly higher microvascular perfusion (VI: 13.72 ± 7.43) compared to the conventional SSRO side (VI: 8.24 ± 7.33; p=0.001).
- No significant difference in masseter muscle thickness was observed between the two surgical techniques (p=0.052).
Conclusions:
- MISSRO is associated with superior long-term masseter muscle microvascular perfusion compared to conventional SSRO.
- Further research is needed to determine the clinical significance of enhanced perfusion and its functional implications.
