OBJECTIVES: This study evaluated the bond strength of luting systems for bonding glass fiber posts to root canal dentin. The hypothesis tested was that there are no differences in bond strength of glass fiber posts luted with different cement systems. METHODS: Forty bovine incisors were randomly assigned to five different resin cement groups (n=8). After endodontic treatment and crown removal, translucent glass fiber posts were bonded into the root canal using five different luting protocols (self-cured cement and etch-and-rinse adhesive system; dual-cured cement and etch-and-rinse adhesive system; self-cured cement and self-etch adhesive system; dual-cured cement and self-etch adhesive system; and dual-cured self-adhesive cement). Push-out bond strength was evaluated at three different radicular levels: cervical, middle, and apical. The interface between resinous cement and the post was observed using a stereoscopic microscope. RESULTS: Analysis of variance showed a statistically significant difference among the cements (p<0.05) and the root canal thirds (p<0.05). The self-adhesive resinous cement had lower values of retention. CONCLUSIONS: The resin cements used with etch-and-rinse and self-etch adhesive systems seem to be adequate for glass fiber post cementation.
OBJECTIVES: This study evaluated the bond strength of luting systems for bonding glass fiber posts to root canal dentin. The hypothesis tested was that there are no differences in bond strength of glass fiber posts luted with different cement systems. METHODS: Forty bovine incisors were randomly assigned to five different resin cement groups (n=8). After endodontic treatment and crown removal, translucent glass fiber posts were bonded into the root canal using five different luting protocols (self-cured cement and etch-and-rinse adhesive system; dual-cured cement and etch-and-rinse adhesive system; self-cured cement and self-etch adhesive system; dual-cured cement and self-etch adhesive system; and dual-cured self-adhesive cement). Push-out bond strength was evaluated at three different radicular levels: cervical, middle, and apical. The interface between resinous cement and the post was observed using a stereoscopic microscope. RESULTS: Analysis of variance showed a statistically significant difference among the cements (p<0.05) and the root canal thirds (p<0.05). The self-adhesive resinous cement had lower values of retention. CONCLUSIONS: The resin cements used with etch-and-rinse and self-etch adhesive systems seem to be adequate for glass fiber post cementation.
Authors: Mohammad Esmaeel Ebrahimi Chaharom; Amir Ahmad Ajami; Mehdi Abed Kahnamouei; Elmira Jafari Navimipour; Pardis Tehranchi; Vahid Zand; Mohammad Reza Sadeghi; Aydin Sohrabi Journal: J Dent Res Dent Clin Dent Prospects Date: 2014-12-03
Authors: Paulo E de Oliveira Moreira; Lucianne S Pamplona; Gláucia C R Nascimento; Renata A Esteves; Oscar F Pessoa; Cecy M Silva Journal: Open Dent J Date: 2015-12-10
Authors: Mariana Benedetti Ferreira Webber; Silvia Masae de Araújo Michida; Fabiano Carlos Marson; Giovani Corrêa de Oliveira; Cleverson de Oliveira E Silva Journal: J Int Oral Health Date: 2015-04