IADR Abstract Archives
The Surface Treatments Differences On Shear Bond Strength Composite-Resin Repair
Objectives: Composite-resin is a tooth colour restoration that often be used in dental practice. Composite-resin restoration can suffer any damage. Repair of the restoration is one of treatment choice of composite-resin restoration’s damage. Repair of composite-resin restoration is a conservative approach than replace it. Surface treatment is a procedure that can enhance repair bond strength. The purpose of this study was to determine the effect of different surface roughness methods to repair bond strength.
Methods: Thirty-six disk-shaped speciments were exposed to Streptococcus mutans for 2 weeks. Speciments were divided into 1 control group and 3 treatment groups (n=6). The treatment groups were treated with phosphoric acid 35%, diamond bur and sandblasting. Each group was repaired with universal adhesive and new composite-resin. All speciments were tested with universal testing machine. The data were analyzed with Kruskal-Wallis and Mann-Whitney tests.
Results: According to Kruskal-Wallis test, there are difference among speciment’s groups (p<0,05). Mann-Whitney test’s results showed that there are significant different between control group and diamond bur group, control-sandblasting, phosphoric acid 35%-diamond bur and phosphoric acid 35%-sandblasting.
Conclusions: The conclusion of this study were there are differences of repair bond strength among the groups. Phosphoric acid 35% didn’t gave any difference on repair bond strength. Diamond bur and sandblasting were surface roughness methods that can be done in composite-resin repair.
Methods: Thirty-six disk-shaped speciments were exposed to Streptococcus mutans for 2 weeks. Speciments were divided into 1 control group and 3 treatment groups (n=6). The treatment groups were treated with phosphoric acid 35%, diamond bur and sandblasting. Each group was repaired with universal adhesive and new composite-resin. All speciments were tested with universal testing machine. The data were analyzed with Kruskal-Wallis and Mann-Whitney tests.
Results: According to Kruskal-Wallis test, there are difference among speciment’s groups (p<0,05). Mann-Whitney test’s results showed that there are significant different between control group and diamond bur group, control-sandblasting, phosphoric acid 35%-diamond bur and phosphoric acid 35%-sandblasting.
Conclusions: The conclusion of this study were there are differences of repair bond strength among the groups. Phosphoric acid 35% didn’t gave any difference on repair bond strength. Diamond bur and sandblasting were surface roughness methods that can be done in composite-resin repair.