EVALUATION OF THE EFFECT OF SANDBLASTING WITH DIFFERENT SAND PARTICLES ON THE BONDING OF IMPLANT, ABUTMENT AND RESIN CEMENT BY TENSILE BOND STRENGHT

Aim: The aim of this study was to evaluate the effects of different sizes of sand particles to investigate the tensile bond strength between titanium implant abutment and resin cement. Material and Methods: Forty titanium implant abutments were selected. The specimens were divided into 4 different groups according to different surface treatments. These groups are; the untreated surface was named as (control), 30 µm silica coated airborne-particle abrasion, 50 µm Al2O3 airborne-particle abrasion and 110 µm Al2O3 airborne-particle abrasion groups. After surface treatments, all implant abutments were cemented with dual cured resin cement to metal substructures with an occlusal ring. Implant abutment-metal substructure samples, which were applied 500 thermal cycles, were then subjected to tensile bonding strenght at a speed of 0.5 mm / min in a conventional crushing device. Post-fracture types of refraction were evaluated with a stereomicroscope (×35) and the cause in the surface topography under a scanning electron microscope (SEM) at (×1000) magnification. Statistical analysis of the data obtained was made with 1-way ANOVA and comparisons between groups were made by the Tukey post hoc test. Results: According to the results of the study, the highest tensile bond strength was seen in 30 µm silica (254.42 ±13.38) group, while the lowest tensile bond strength value was seen in the control (198.24 ±15.32) group. It was found that tensile bond strength values were statistically significantly increased in all surface treatment groups. (p<0,5) Conclision: The bonding between the different sand particles applied on both the implant-abutment and the implant abutment-metal substructure showed significant differences.