RESUMO

This systematic review aimed to assess if the use of fiber posts reinforces weakened immature teeth. A systematic review was conducted of laboratory studies that evaluated the fracture resistance of simulated immature teeth restored with fiber posts compared to teeth restored exclusively with resin. An electronic search was performed using the following databases: PubMed/MEDLINE, Web of Science, Scopus and LILACS, BBO, and grey literature. Two independent researchers screened the titles and abstracts of the retrieved studies for relevance to the research question. Subsequently, the full texts of potentially relevant studies were screened based on the exclusion criteria. Ten out of 1792 unique records were included in this systematic review. Risk of bias was assessed using an adapted tool based on the Cochrane risk of bias tool. The laboratory studies included in this systematic review were performed on both human and bovine teeth. Eight studies concluded that fiber posts reinforce the structure of weakened roots, and two studies reported that fiber posts did not strengthen the radicular structure compared to teeth exclusively restored with resin composite. The highly heterogeneous data made it challenging to synthesize the results into a summary estimate, and thus no meta-analysis was undertaken. A summary effect could not be estimated without a meta-analysis. Although the laboratory literature suggests that fiber posts reinforce the structure of immature teeth, the results should be interpreted with caution, as most of the studies had an unclear or high risk of bias.

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RESUMO

O objetivo do presente estudo foi avaliar o impacto do tratamento na expressão do heterodímero S100A8/A9 e nos parâmetros clínicos em pacientes com mucosite peri-implantar e peri-implantite. Quarenta e sete pacientes foram avaliados e divididos em dois grupos: (1) Mucosite peri-implantar (n=27) e (2) Peri-implantite (n=20). Os parâmetros clínicos avaliados foram: profundidade de bolsa (PB), nível de inserção clínica (NIC), porcentagem de placa (%placa) e sangramento à sondagem (%sangramento). A saliva não estimulada foi coletada na consulta inicial (T0) e três meses após o tratamento (T1). A mucosite peri-implantar foi tratada com raspagem supra gengival e profilaxia; a peri-implantite com terapia cirúrgica ressectiva. Os níveis de S100A8/A9 foram mensurados através do ELISA. Os resultados das características clínicas de boca toda demonstraram que, no grupo 1, houve redução significativa na PB (p=0,001), %placa (p=0,005) e %sangramento (p<0,001) e não no NIC (p=0,740) após o tratamento. No grupo 2, houve redução significativa em PB(p<0,001) e %sangramento (p=0,001) após o tratamento, o que não aconteceu no NIC(p=702) e %placa (p=0,469). Nos parâmetros peri-implantares do grupo 1, houve redução da PB (p<0,001), NIC (p<0,001), %placa (p=0,022) e %sangramento (p<0,001). No grupo 2, também houve redução significativa em PB (p=0,02), %placa (p=0,017), %sangramento (p=0,002) e não houve diferença no NIC(p=0,052). A análise imunológica revelou que, após o tratamento, houve redução significativa na expressão de S100A8/A9 na mucosite peri-implantar (p=0,004) e na peri-implantite (p=0,010). Nas consultas de T0 (p=0,153) e T1 (p=0,982), não houve diferença signitificativa nessa expressão entre o grupo 1 e grupo 2. Assim, pôde-se concluir que o tratamento foi eficaz, uma vez que houve melhora clínica significante dos parâmetros clinicos e redução significativa na expressão de S100A8/A9 na saliva após o tratamento (AU)

We aimed to evaluate the impact of treatment on S100A8 / A9 heterodimer expression in patients with peri-implant mucositis and peri-implantitis. Forty-seven patients were evaluated and divided into two groups: (1) Peri-implant mucositis, with a mean age (MI) of 63.1 years (Standard Deviation [SD] ± 7.7) and (2) Peri-implantitis with MI 61.2 (SD ± 7.0). The clinical parameters evaluated were: pocket depth (PD), clinical attachment level (CAL), percentage of visible plaque (%plaque), and percentage of bleeding on probing (%bleeding). Unstimulated whole saliva was collected at baseline (T0) and three months after treatment (T1). Peri-implant mucositis was treated with supra-gingival scaling and prophylaxis. Peri-implantitis was treated with open flap debridement. S100A8 / A9 levels were measured by ELISA. Our results showed that, in the mucositis group, there was a significant reduction in PD (p=0.001),% plaque (p=0.005) and % bleeding (p <0.001) after treatment. In the peri-implantitis group, there was a significant reduction in PD (p <0.001) and % bleeding (p=0.001) after treatment. Regrading only the Peri-implant parameters, the mucositis group showed a reduction in PD (p <0.001), CAL (p <0.001), %plaque (p=0.022) and %bleeding (p<0.001). In Peri-implantitis group, there was also a significant reduction in PD (p=0.02), %plaque (p=0.017), and % bleeding (p=0.002). S100A8/A9 expression reduced significantly after treatment both in peri-implant mucositis (p=0.004) and peri-implantitis (p=0.010). Therefore, we concluded that the treatment was effective to improve the clinical parameters and to reduce significantly the expression of S100A8 / A9 in patients having peri-implant diseases (AU)

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