Premium
Shear bond strength of luting agents to fixed prosthodontic restorative core materials
Author(s) -
Capa N,
Özkurt Z,
Canpolat C,
Kazazoglu E
Publication year - 2009
Publication title -
australian dental journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.701
H-Index - 71
eISSN - 1834-7819
pISSN - 0045-0421
DOI - 10.1111/j.1834-7819.2009.01159.x
Subject(s) - materials science , bond strength , crosshead , glass ionomer cement , post and core , adhesive , composite material , universal testing machine , ultimate tensile strength , cement , luting agent , dental bonding , flexural strength , crown (dentistry) , layer (electronics)
Background: Bonding properties of luting cements are important for retention of restorative core materials. The aim of this study was to compare the bonding performance of a resin‐modified glass ionomer cement and a self‐adhesive resin cement to various fixed prosthodontic core materials. Methods: Cylindrical specimens with a thickness of 2 mm and a diameter of 5 mm were fabricated from Au‐Pd‐Ag, Co‐Cr, Ni‐Cr‐Mo, Ni‐Cr‐Fe alloys, titanium, zirconia and Empress II (n = 20). Each group was divided into two subgroups to be luted with two different luting agents. Composite resin blocks were cemented onto specimens with RelyXUnicem and FujiCem. A shear bond strength machine with 50 kg load cell and 0.50 mm/min crosshead speed was used. Kruskal Wallis test, Dunn’s Multiple Range test and Mann‐Whitney‐U test were used for statistical analysis. The results were evaluated in a confidence interval of p < 0.05. Results: The highest bond strength was obtained between Ni‐Cr‐Fe‐RelyXUnicem (8.22 ± 2.15 MPa) and the lowest was between Empress II‐FujiCem (1.48 ± 0.9 MPa). In FujiCem groups, Co‐Cr and Ni‐Cr‐Fe showed significantly higher bond strength than Au‐Pd‐Ag and Empress II. In RelyX Unicem groups, Ni‐Cr‐Fe showed higher bond strength than Empress II. Conclusions: The types of luting agents and restorative core materials may have a significant influence on bond strength.