Author/Authors :
SUKUMARAN, PREMA Guy’s Hospital - King’s College London, Dental Institute - Department of Restorative Dentistry, UK , SUKUMARAN, PREMA university of malaya - Faculty of Dentistry - Department of Restorative Dentistry, Malaysia , FOXTON, RICHARD Guy’s Hospital - King’s College London, Dental Institute - Department of Restorative Dentistry, UK , WILSON, RON Guy’s Hospital - King’s College London, Dental Institute - Department of Restorative Dentistry, UK , MALLETT, RICHARD Guy’s Hospital - King’s College London, Dental Institute - Department of Biomaterials, Biomimetics and Biophotonics, UK , FENLON, MICHAEL Guy’s Hospital - King’s College London, Dental Institute - Department of Restorative Dentistry, UK
Abstract :
This study evaluated the effect of disinfectants on the tensile bond strength of Nickel-Chromium alloy bonded with resin cement. 180 pairs of Nickel-Chromium dumbbells were prepared. The dumbbells were divided into 3 groups (n=60), which received one of the following treatments: Sandblasted only (control), sandblasted and Perform®-ID or sandblasted and sodium hypochlorite (SH) before bonding with resin cement. All bonded specimens were stored in distilled water for 24 h and half of the specimens were subsequently thermocycled (500 cycles) before debonding. Tensile bond strength was recorded and each dumbbell was examined for failure mode. Two-way ANOVA analysis indicated that overall there was a statistically significant difference between 24 h and thermocycling test, but no differences between sandblasted only, sandblasted and Perform-ID or sandblasted and SH groups. Post-ANOVA contrasts indicated that only the sandblasted and SH group showed a significant difference between the 24 h and thermocycling test. Disinfectants did not significantly decrease tensile bond strength between Nickel-Chromium dumbbells bonded with resin cement.
Keywords :
Adhesion , alloys , cements , disinfectants
