RESUMEN
BACKGROUND: Typically, dental implants are placed in irradiated bone after a delay that exceeds 6 months, but it is not known whether longer delays are beneficial. PURPOSE: The purpose of the study is to review the literature comparing the failure rate of dental implants placed in irradiated bone between 6 and 12 months and after 12 months from the cessation of radiotherapy. MATERIALS AND METHODS: Four electronic databases were searched for articles published until February 2013 without language restriction: Lilacs, Medline, Scopus, and the Cochrane Central Register of Controlled Trials. Two reviewers independently assessed the eligibility criteria and extracted data. Fixed effect meta-analysis was performed. RESULTS: Overall, 3,749 observational studies were identified. After the screening of titles and abstracts, 236 publications were selected, and 10 were included in the final analysis. The pooled relative risk (RR) of failure was RRpooled = 1.34 (95% confidence interval [CI]: 1.01-1.79), higher in individuals who had dental implants installed between 6 and 12 months after receiving radiotherapy. I(2) indicated nearly 21% heterogeneity (p = .25). Egger's test indicated no evidence of publication bias (p = .62); however, the removal of one study significantly affected the overall RR (RRpooled = 1.08, 95% CI: 0.77-1.52). CONCLUSIONS: Placing implants in bone within a period shorter than 12 months after radiotherapy may result in a higher risk of failure; however, additional evidence from clinical trials is needed to verify this risk.
Asunto(s)
Proceso Alveolar/efectos de la radiación , Proceso Alveolar/cirugía , Implantación Dental Endoósea , Implantes Dentales , Fracaso de la Restauración Dental , Neoplasias de Cabeza y Cuello/radioterapia , HumanosRESUMEN
A reunião anual da Sociedade Brasileira de Pesquisa Odontológica (SBPqO) é um evento representativo para a divulgação das pesquisas cientificas na área de odontologia realizadas no Brasil. O objetivo do presente trabalho foi realizar o levantamento das publicações realizadas pelo corpo docente e discente do Curso de Odontologia da Universidade Luterana do Brasil/ULBRA (Campus Canoas, Cachoeira do Sul e Torres) nos Suplementos da Brazilian Oral Research, periódico científico oriundo das apresentações dos painéis na SBPqO. Para isso, os resumos publicados foram acessados por meio de consulta on line no site da instituição e catalogados conforme o ano da reunião, o código da pesquisa, os autores (por sobrenome), a categoria do painel e o delineamento do estudo. Os dados foram transferidos para uma tabela a partir da primeira publicação e analisados em relação ao número de publicações/ano e quanto ao delineamento do estudo. O ano de 2006 apresentou o maior número de publicações (50), entretanto a produtividade apresenta-se em declínio nos últimos três anos (2007, 2008 e 2009). O delineamento da maioria das pesquisas no período analisado são laboratoriais (in vitro) e transversais, ou seja, estudos com baixo poder de gerar evidência científica.
The Brazilian Society for Dental Research (SBPqO) is an annual meeting for the publishing of the dentistry scientific research in Brazil. The aim of this study was to search publications by students and professors of School of Dentistry, Lutheran University of Brazil / ULBRA (Canoas, Cachoeira do Sul, Torres) in the Brazilian Oral Supplements Research, a scientific journal dedicated to publication of SBPqO research banners. Published abstracts were accessed by online searching on site of SBPqO and organized according to: year, code research, authors (surname), banner category and the study design. Data were organized in a table from the first publication and analyzed in relation to the frequency of publications per year and study design. In 2006 there was the highest number of publications (50). However, the publications are decreasing on last three years (2007, 2008 e 2009). The design of most publications at period was in vitro and cross-sectional. These studies have low capacity to generate scientific evidence.
