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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
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Comparative study of stability between two different fixation systems after orthognathic surgery in mandibular
Pawaris Chanachol1, Net-Nada Chongruangsri2, Sirida Arunjaroensuk3
1Department of oral and maxillofacial surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
Journal of Stomatology, Oral and Maxillofacial Surgery
|March 13, 2023
Summary
Bioabsorbable and titanium fixation systems show comparable skeletal stability after mandibular prognathism surgery. This suggests bioabsorbable systems offer a viable alternative to titanium, potentially reducing patient discomfort from second surgeries.
Area of Science:
- Orthognathic surgery
- Biomaterials science
- Craniofacial surgery
Background:
- Mandibular prognathism correction often involves orthognathic surgery.
- Titanium fixation systems are standard but may require hardware removal.
- Bioabsorbable systems offer potential advantages in reducing complications.
Purpose of the Study:
- To compare the skeletal stability of bioabsorbable versus titanium fixation systems.
- To evaluate long-term outcomes in patients undergoing bilateral sagittal split ramus osteotomy (BSSRO) for mandibular prognathism.
Main Methods:
- Retrospective study of 28 patients with mandibular prognathism.
- Comparison of titanium and bioabsorbable fixation groups.
- Lateral cephalometric analysis at immediate postoperative, 1, 3, 6, and 12 months using Dolphin imaging software.
Main Results:
- No statistically significant differences in skeletal stability were found within each group.
- Significant differences between groups were observed in specific linear and angular measurements at various time points (T0-T1, T0-T2, T0-T3).
- Observed differences remained within normal ranges, indicating comparable stability.
Conclusions:
- Bioabsorbable fixation systems provide skeletal stability comparable to titanium systems after orthognathic surgery.
- Bioabsorbable systems may offer a patient-friendly alternative by eliminating the need for a second surgery to remove hardware.
