IADR Abstract Archives
Effects of Sandblasting and Silicoating on Bond Strength Between Titanium and Porcelain
Objectives: Aim of the present study to evaluate the effect of the different sized Al2O3 particles and tribochemical silica-modified Al2O3 particles on titanium surface in order to determine most effective method for increasing the bond strength of porcelain to titanium.
Methods: Thirty rectangular plate of commercially pure titanium were milled using CAD/CAM systems for each group of airborne-particle abrasions. The specimens were divided into 3 groups, which were subjected to one of the following airborne-particle abrasion conditions: 1) Silica-modified 110 mm Al2O3; 2) 150 mm Al2O3 particles; 3) 50 mm Al2O3 particles. The porcelain was applied onto the cleaned titanium plate surfaces. All specimens were prepared for four-point bending test on a universal testing machine. The strain energy release rate (Gc value) was calculated for each test group. The data was then analyzed using a one-way ANOVA and Bonferroni test for multiple comparisons.
Results: Mean and standard deviation values of strain energy release rate (Gc) values of titanium-porcelain complex were presented, respectively: Silica-modified 110 mm Al2O3 24.5 (4.1) J/m2, 150 mm Al2O3 18.6 (5.0) J/m2, 50 mm Al2O3 20.8 (6.1) mm. The one-way ANOVA test indicated that there was a significant difference between the groups. (p=0.048) According to Bonferroni test, there was a statistically significance between the silica-modified 110 mm Al2O3 and 150 mm Al2O3 groups. (p=0.048) There were no significant differences between silica-modified 110 mm Al2O3 -50 mm Al2O3 and 150 mm Al2O3-50 mm Al2O3 groups. (p>0.05)
Conclusions: Within the limitations of this study, the following conclusions were drawn:
1) Airborne-particle abrasion with silica-modified 110 mm Al2O3 indicated higher bond strength than airborne abrasion with 150 mm Al2O3.
2) There was no difference between airborne-particle abrasion with silica-modified 110 mm Al2O3 and airborne abrasion with 150 mm Al2O3.
3) Tribochemical silica coating had an positive effect on particle size used in sandblasting technique.
Methods: Thirty rectangular plate of commercially pure titanium were milled using CAD/CAM systems for each group of airborne-particle abrasions. The specimens were divided into 3 groups, which were subjected to one of the following airborne-particle abrasion conditions: 1) Silica-modified 110 mm Al2O3; 2) 150 mm Al2O3 particles; 3) 50 mm Al2O3 particles. The porcelain was applied onto the cleaned titanium plate surfaces. All specimens were prepared for four-point bending test on a universal testing machine. The strain energy release rate (Gc value) was calculated for each test group. The data was then analyzed using a one-way ANOVA and Bonferroni test for multiple comparisons.
Results: Mean and standard deviation values of strain energy release rate (Gc) values of titanium-porcelain complex were presented, respectively: Silica-modified 110 mm Al2O3 24.5 (4.1) J/m2, 150 mm Al2O3 18.6 (5.0) J/m2, 50 mm Al2O3 20.8 (6.1) mm. The one-way ANOVA test indicated that there was a significant difference between the groups. (p=0.048) According to Bonferroni test, there was a statistically significance between the silica-modified 110 mm Al2O3 and 150 mm Al2O3 groups. (p=0.048) There were no significant differences between silica-modified 110 mm Al2O3 -50 mm Al2O3 and 150 mm Al2O3-50 mm Al2O3 groups. (p>0.05)
Conclusions: Within the limitations of this study, the following conclusions were drawn:
1) Airborne-particle abrasion with silica-modified 110 mm Al2O3 indicated higher bond strength than airborne abrasion with 150 mm Al2O3.
2) There was no difference between airborne-particle abrasion with silica-modified 110 mm Al2O3 and airborne abrasion with 150 mm Al2O3.
3) Tribochemical silica coating had an positive effect on particle size used in sandblasting technique.