Survival of dental implants in native and grafted bone in irradiated head and neck cancer patients: A retrospective analysis.
Artigo
em Inglês
| IMSEAR
| ID: sea-140102
ABSTRACT
Aim:
To study the long-term survival of dental implants placed in native or grafted bone in irradiated bone in subjects who had received radiation for head and neck cancer. Materials andMethods:
A retrospective chart review was conducted for all patients who received dental implants following radiation treatment for head and neck cancer between May 1, 1987 and July 1, 2008. Only patients irradiated 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:
A total of 48 patients who had prior head and neck radiation had 271 dental implants placed during May 1987-July 2008. There was no statistically significant difference between implant failure in native and grafted bone (P=0.76). Survival of implants in grafted bone was 82.3% and 98.1% in maxilla and mandible, respectively, after 3 years. Survival of implants in native bone in maxilla and mandible was 79.8% and 100%, respectively, after 3 years. For implants placed in the native bone, there was a higher likelihood of failure in the maxilla compared to the mandible and there was also a tendency for implants placed in the posterior region to fail compared to those placed in the anterior region.Conclusion:
There was no significant difference in survival when implants were placed in native or grafted bone in irradiated head and neck cancer patients. For implants placed in native bone, survival was significantly influenced by the location of the implant (maxilla or mandible, anterior or posterior).
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Dosagem Radioterapêutica
/
Idoso de 80 Anos ou mais
/
Idoso
/
Feminino
/
Humanos
/
Masculino
/
Carcinoma de Células Escamosas
/
Implantes Dentários
/
Modelos de Riscos Proporcionais
/
Análise de Sobrevida
Tipo de estudo:
Estudo de etiologia
/
Estudo observacional
/
Estudo prognóstico
/
Fatores de risco
Limite:
Aged80
Idioma:
Inglês
Ano de publicação:
2011
Tipo de documento:
Artigo
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