Push-out bond strengths of fiber-reinforced composite posts with various resin cements according to the root level.
- Author:
Hoon Sang CHANG
1
;
Young Sin NOH
;
Yoon LEE
;
Kyung San MIN
;
Ji Myung BAE
Author Information
- Publication Type:Original Article
- Keywords: Fiber reinforced-composite post; Resin cements; Bond strength; Root level
- MeSH: Adhesives; Bicuspid; Boron Compounds; Collodion; Composite Resins; Dental Cements; Dentin; Humans; Methacrylates; Methylmethacrylates; Resin Cements
- From:The Journal of Advanced Prosthodontics 2013;5(3):278-286
- CountryRepublic of Korea
- Language:English
- Abstract: PURPOSE: The aim of this study was to determine whether the push-out bond strengths between the radicular dentin and fiber reinforced-composite (FRC) posts with various resin cements decreased or not, according to the coronal, middle or apical level of the root. MATERIALS AND METHODS: FRC posts were cemented with one of five resin cement groups (RelyX Unicem: Uni, Contax with activator & LuxaCore-Dual: LuA, Contax & LuxaCore-Dual: Lu, Panavia F 2.0: PA, Super-Bond C&B: SB) into extracted human mandibular premolars. The roots were sliced into discs at the coronal, middle and apical levels. Push-out bond strength tests were performed with a universal testing machine at a crosshead speed of 0.5 mm/min, and the failure aspect was analyzed. RESULTS: There were no significant differences (P>.05) in the bond strengths of the different resin cements at the coronal level, but there were significant differences in the bond strengths at the middle and apical levels (P<.05). Only the Uni and LuA cements did not show any significant decrease in their bond strengths at all the root levels (P>.05); all other groups had a significant decrease in bond strength at the middle or apical level (P<.05). The failure aspect was dominantly cohesive at the coronal level of all resin cements (P<.05), whereas it was dominantly adhesive at the apical level. CONCLUSION: All resin cement groups showed decreases in bond strengths at the middle or apical level except LuA and Uni.
