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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
Is failure of condylar neck osteosynthesis predictable based on orthopantomography?
Rudolf Seemann1, G Undt, G Lauer
1University Hospital of Craniomaxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria. rudolf.seemann@meduniwien.ac.at
Summary
Reduced ramus height significantly lowers osteosynthesis failure risk in mandibular condyle fractures. Postoperative orthopantomographs can identify factors predicting these failures.
Area of Science:
- Orthopedic surgery
- Oral and maxillofacial surgery
- Radiology
Background:
- Previous studies reported varying osteosynthesis failure rates (11.3% with 1 miniplate, 6.7% with 2 miniplates, 4.4% with a single Medartis condyle plate).
- Current research often focuses on osteosynthesis materials, with conventional radiographs being the primary method for detecting failures.
- This study investigated factors in postoperative orthopantomographs that may increase osteosynthesis failure risk.
Purpose of the Study:
- To identify factors in postoperative orthopantomographs that predict osteosynthesis failure in mandibular condyle fractures.
- To evaluate the association between specific radiographic parameters and the risk of osteosynthesis failure.
Main Methods:
- A total of 136 patients (22 with osteosynthesis failure, 114 without) with 151 mandibular condyle fractures were analyzed.
- Eight parameters were assessed using postoperative orthopantomographs.
- Statistical analysis was performed to determine predictors of osteosynthesis failure.
Main Results:
- Reduced or normal ramus height was the strongest predictor, significantly reducing the odds of osteosynthesis failure (P = .000001).
- Isolated fractures were found to be significantly more prone to failure (P = .0009).
Conclusions:
- Postoperative orthopantomographs are valuable for identifying factors that increase the risk of osteosynthesis failure.
- Ramus height and fracture type are significant predictors of osteosynthesis failure in mandibular condyle fractures.