Oral Health and Dental Management

Survival of implants in irradiated head and neck cancer patients

12^th World Congress on Dentistry and Oral Health

August 04-05, 2016 Manchester, UK

Aravind Buddula

Dentistry Gentle Dental, USA

Posters & Accepted Abstracts: Oral Health Dent Manag

Abstract:

Objective: To study the long-term survival of dental implants placed in irradiated bone in subjects who received radiation for head and neck cancer. Methods: A retrospective chart review was conducted for all patients who received dental implants following radiation treatment for head and neck cancer from May 1st, 1987 to July 1st, 2008. Only patients who had been treated with a radiation dose of 50 Gy or greater and those who received dental implants in the irradiated field after head and neck radiation were included in the study. The associations between implant survival and patient/implant characteristics were estimated by fitting univariate marginal Cox proportional hazards models. Results: The estimated survival at one, five and 10 years were 98.9%, 89.9% and 72.3%, respectively. Implants placed in the maxilla were more likely to fail than implants placed in the mandible (p=0.002). At one and two years after placement, the survival of implants placed in the maxilla was 80.5%. There was also a tendency for implants placed in the posterior region to fail compared to those placed in the anterior region (p=0.051). We were unable to identify a statistically significant association of radiation dosage or time span between radiation and placement with implant failure. There was no statistically significant association between the length and diameter of implant and its survival. Conclusions: Based on this retrospective study, the estimated survival at one, five and 10 years were 98.9%, 89.9%, and 72.3%, respectively. Implants placed in maxilla were more likely to fail compared to the ones placed in mandible. Implants placed in the posterior region were more likely to fail compared to the ones placed in the anterior region. No association was identified between survival and length, diameter, type of bone and radiation dose received.

Biography :

Email: arvimayo@yahoo.com