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Implant-Retained Auricular Prosthesis: Is Mastoid Cell Perforation Associated With Implant Survival?
Matthias Ureel1, Valerie Van Kelecom2, Benjamin Denoiseux1
1Attending Physician, Department of Oral and Craniomaxillofacial Surgery, Ghent University Hospital, Ghent, East-Flanders, Belgium; Attending Physician, Cancer Research Institute Ghent, Ghent, East-Flanders, Belgium.
Temporal implant perforation into mastoid air cells did not significantly impact implant survival in this study. Higher age, however, was linked to increased implant failure risk, suggesting age as a key factor in reconstructive surgery outcomes.
Area of Science:
- Medical engineering
- Reconstructive surgery
- Otolaryngology
Background:
- Implant-retained auricular prostheses are crucial for reconstructing facial defects.
- Standard temporal implants (3.0-4.0 mm) may have survival limitations.
- Longer implants could improve survival but risk mastoid cell perforation.
Purpose of the Study:
- To evaluate the association between temporal implant perforation into mastoid air cells and implant survival.
- To identify risk factors influencing implant survival in auricular reconstruction.
Main Methods:
- Retrospective cohort study of patients with temporal endosseous implants.
- Assessed implant perforation into mastoid air cells as a predictor variable.
- Used Cox proportional hazards regression to analyze implant survival, controlling for covariates like age and smoking.
Main Results:
- No significant association found between mastoid cell perforation and implant survival (HR 0.31, P = .2).
- Higher age was significantly associated with increased implant failure risk (HR 1.10, P = .006).
- The study included 22 subjects and 46 implants, with a 1-year failure rate of 87%.
Conclusions:
- Mastoid air cell perforation does not appear to compromise implant survival.
- Age is a significant risk factor for implant failure in auricular reconstruction.
- Further prospective studies are recommended to validate these findings.
