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Push-out bond strengths of fiber-reinforced composite posts with various resin cements according to the root level
The Journal of Advanced Prosthodontics ; : 278-286, 2013.
Article in English | WPRIM | ID: wpr-181917
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); 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.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Bicuspid / Boron Compounds / Adhesives / Collodion / Composite Resins / Resin Cements / Dental Cements / Dentin / Methacrylates / Methylmethacrylates Limits: Humans Language: English Journal: The Journal of Advanced Prosthodontics Year: 2013 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Bicuspid / Boron Compounds / Adhesives / Collodion / Composite Resins / Resin Cements / Dental Cements / Dentin / Methacrylates / Methylmethacrylates Limits: Humans Language: English Journal: The Journal of Advanced Prosthodontics Year: 2013 Type: Article