J Oral Med Oral Surg
Volume 24, Number 3, October 2018
|Page(s)||103 - 106|
|Section||Article original / Original article|
|Published online||10 October 2018|
Long-term implant failure in patients treated for oral cancer by external radiotherapy: a retrospective monocentric study
Head and Neck Unit, Surgical Oncology Department, Léon Bérard Regional Center for the Fight Against Cancer,
28 rue Laennec,
2 Oral Surgery, Faculty of Odontology, Claude Bernard University, 11 rue Guillaume Paradin, 69008 Lyon, France
* Correspondence: firstname.lastname@example.org
Accepted: 26 December 2017
Introduction: The placement of dental implants in irradiated bone has allowed functional rehabilitation for many oral cancer patients. Nonetheless, there is only few data about implant failure in irradiated tissues and their consequences. This retrospective study aims to highlight the rate and circumstances of implant failure. Material and method: Patients treated with external radiotherapy for oral carcinoma and who received dental implants were included. Patients reconstructed with free bone flaps were excluded. Results: Eighteen patients were included. Forty implants were placed between 2004 and 2007, 8 failed, of whom one osteoradionecrosis was observed. Time interval between radiotherapy and implantation was 44.6 (6–182) months. Mean dose was 51.8 (50–66) Gy. Discussion: In the series, the implant failure rate is 20%, which corroborates the literature's data. Failures occur more often for doses over 50 Gy. The placement of dental implant in irradiated bone leads to soft tissue complications but also increases the risk of osteoradionecrosis. The recent reimbursement of dental implants in oral cancer patients by the National Social Health system will probably increase the indications. Multidisciplinary staffs should be aware of benefit/risk ratio for each patient.
Key words: dental implants / failure / radiotherapy
© The authors, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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