Effects of Internal Bleaching on the Adhesion of Glass-Fiber Posts

OBJECTIVE: We evaluated the effects of internal bleaching on the adhesion of glass-fiber posts (GFPs) luted with different resin cements. METHODS: Forty extracted human single-root teeth were endodontically treated and divided into four groups (n=10): G1- conventional resin cement (CRC); G2- self-ad...

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Detalles Bibliográficos
Autores principales: de Oliveira Moreira, Paulo E., Pamplona, Lucianne S., Nascimento, Gláucia C. R., Esteves, Renata A., Pessoa, Oscar F., Silva, Cecy M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Bentham Science Publishers 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4763955/
https://www.ncbi.nlm.nih.gov/pubmed/26962369
http://dx.doi.org/10.2174/1874210601509010375
Descripción
Sumario:OBJECTIVE: We evaluated the effects of internal bleaching on the adhesion of glass-fiber posts (GFPs) luted with different resin cements. METHODS: Forty extracted human single-root teeth were endodontically treated and divided into four groups (n=10): G1- conventional resin cement (CRC); G2- self-adhesive resin cement (SARC); G3- bleaching + CRC; and G4- bleaching + SARC. Specimens were sectioned transversally into three slices to perform the push-out test at the coronal, middle and apical regions of the root canals. Data were analyzed using analysis of variance and Tukey's test (p<0.05). RESULTS: The push-out bond strength of GFPs luted with SARC after bleaching (G4) was significantly lower than that of the other groups (p<0.001). We found no statistically significant differences in push-out bond strength among the other groups. SIGNIFICANCE: Internal bleaching reduced the adhesion of GFPs luted with SARC. The adhesion of GFPs luted with CRC was not decreased after bleaching.

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