Shear Bond Strengths of a luting Glass Ionomer Cement and a Self-Adhesive Universal Resin Cement to a Base Metal Alloy

Background:The bond between the luting cement and the metal at the metal-cement interface of a fixed dental prosthesis is critical for its clinical success. Objective: To evaluate the shear bond strengths of type 1 GIC luting cement and a self-adhesive universal resin cement to a nickel chromium based base metal alloy. Design:Wiron alloy was taken and cast in the form of cylinders (10mm length x 8mm diameter). The base of each cylinder was joined with either a Type 1 luting glass Ionomer cement (group 1) or a self-adhesive universal resin cement (group 2) to form a bonded assembly.This bonded assembly was used for shear bond strength testing with INSTRON Universal Testing Machine. Statistical Evaluation:The data were analyzed using Kruskal Wallistest establish whether there was a significant difference among the two groups. The significance was set at a P value <0.05. Results:There was a significant difference in the shear bond strengths between group 1 and group 2.(p=0.0345) Conclusion:The self-adhesive universal resin cement showed significantly higher shear bond strengths to a nickel chromium based base metal alloy compared to type 1 glass Ionomer cement.