Effect of different core build-up materials on strength of post restored teeth

Canay S., ERSU B., Yuzugullu B., Sukuroglu E.

MATERIALS RESEARCH INNOVATIONS, vol.15, no.1, pp.9-12, 2011 (SCI-Expanded) identifier identifier


The aim of the present paper is to determine shear bond strengths (SBSs) of core build-up materials placed on post retained endodontically treated teeth. Following endodontic treatment, prefabricated posts were placed on 84 extracted maxillary first molar teeth. Core materials including high copper admixed silver amalgam (Duralloy; control group), dual cured adhesive core materials (Bis-Core, LuxaCore Dual and Rebilda DC), organically modified ceramic (Admira), light cured resin composite (Filtek Z250) and silver reinforced glass ionomer cement (Argion Molar) were placed. Shear bond strength was tested in a universal testing machine (crosshead speed=1 mm min(-1)). The Mann-Whitney U test followed by Bonferroni post hoc correction was used for statistical analysis (significance level=0.05). While Filtek Z250 exhibited the highest SBS values (p < 0.05), Argion Molar showed the lowest values (p < 0.05). Bis-Core, LuxaCore Dual, Rebilda DC and Admira groups had similar bond strengths (p > 0.05). Duralloy revealed higher SBS values in comparison to Rebilda DC group (p < 0.05). According to SBS values, dual or light cured resin composites may be used as alternatives to amalgam.