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Variables Related to Plate Removal Needs Following Mandibular Sagittal Split Osteotomy
Erick Vargas1,2, Víctor Ravelo3,4, Alejandro Unibazo5
1Division of Oral and Maxillofacial Surgery, Hospital C.H.M., Chillan.
The Journal of Craniofacial Surgery
|May 5, 2025
Summary
Osteosynthesis removal after mandibular sagittal split ramus osteotomy (SSRO) is often due to plate exposure, particularly in women and skeletal class II patients. Removal should be selective.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthognathic Surgery
Background:
- Mandibular sagittal split ramus osteotomy (SSRO) is a common procedure for correcting jaw deformities.
- Osteosynthesis hardware removal is sometimes necessary, but factors influencing this are not fully understood.
Purpose of the Study:
- To identify factors associated with osteosynthesis plate removal after mandibular SSRO.
- To evaluate the incidence and reasons for hardware removal in SSRO patients.
Main Methods:
- Retrospective analysis of 116 patients (232 SSROs) between 2022 and 2024.
- Evaluation of variables including age, sex, skeletal class, type of movement, and time to removal.
- Statistical analysis using Spearman and Mann-Whitney tests (P<0.05 significance).
Main Results:
- 21.55% of patients required plate removal, with higher prevalence in women (P<0.02).
- Plate exposure (with or without infection) was the primary reason for removal (80.39%).
- Skeletal class II patients showed a higher complication rate (P<0.03), especially with larger mandibular movements.
Conclusions:
- Osteosynthesis removal after SSRO should be selective.
- Hardware removal is primarily associated with patients presenting with skeletal class II facial deformities.
