Abstract
The testing method for bonding strength of dental adhesive materials such as composite resins and resin cements were investigated. Two types of test specimens were examined, namely butt joints and single lap joints. Circular and square cross-sectional adherends for butt joints specimens were utilized. For lap joints specimens, the tension-shear test and the compression-shear test for the evaluations of bonding strength were conducted. It is found that the cross-sectional shape of adherends did not affect significantly the bonding strength in butt joints specimens. For lap joints specimens, the compression-shear test gave higher and less scattered bonding strength compared with the tension-shear test.
