Implant-prosthetic rehabilitation after radiation treatment in head and neck cancer patients: a case-series report of outcome
Kategoria artykułu: Research Article
Data publikacji: 07 lut 2016
Zakres stron: 94 - 100
Otrzymano: 27 lis 2015
Przyjęty: 06 sty 2016
DOI: https://doi.org/10.1515/raon-2016-0005
Słowa kluczowe
© 2017 Jasna Cotic, Jure Jamsek, Milan Kuhar, Natasa Ihan Hren, Andrej Kansky, Mutlu Özcan, Peter Jevnikar
This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background
Slovenia has a high burden of head and neck cancer. Patients are mostly treated with surgery followed by radiation therapy. Advanced surgical and prosthodontic techniques have expanded the rehabilitation options. The aim of the study was to review the outcome of implant-prosthetic treatment after radiation therapy.
Patients and methods
Twenty irradiated head and neck cancer patients who received a removable implant-supported denture at the University Medical Centre Ljubljana were included in the study. Kaplan-Meier survival analysis, Cox proportional hazard models and logistic regression were used to assess the implant survival and success rate.
Results
Twenty patients had 100 implants inserted. The estimated implant survival rate was 96% after 1 year and 87% after 5 years. Failures were mostly observed before loading (91.2%). Implants inserted in the transplanted bone were significantly more likely to fail. Out of 89 implants supporting the dentures, 79 implants (88.7%) were successful, meaning that they were functionally loaded and exhibited no pain, radiolucency or progressive bone loss. Prosthetic treatment was significantly less successful in older patients. The attachment system and the number of implants did not have a statistically significant influence on the success rate.
Conclusions
Implant-supported dentures have been shown to be a reliable treatment modality after head and neck cancer surgery and radiation therapy. Possible early failures should be communicated with the patients.