IADR Abstract Archives
Shear Bond Strength of Cements on Celtra Duo in Self-Cure Mode
Objectives: To compare the shear bond strengths of commercially available cements to a new zirconia reinforced lithium silicate (Celtra Duo) in self-cure only mode.
Methods: Celtra Duo blocks were sectioned into 3mm×3.5mm slabs (n=72) and mounted in acrylic. The surface was ground with 320 and 600 grit abrasive paper. A thin layer of IPS Ceramic Etching Gel was applied(20sec), rinsed(60sec), placed in ultrasonic bath(10min) and blot dried(10sec) and cemented as in table below . The specimens were allowed to self-cure at 37°C for 10 minutes and debonded after 24hr water storage. Shear bond strength (SBS) values were obtained with Universal tester/Instron 4400 at crosshead speed of 1 mm/min. A one-way ANOVA and Tukey post-hoc analysis were performed for each group.
Results: There is no statistically significant difference (p>.05) between the bond strengths of tested cements on Celtra Duo in self-cure mode.
Conclusions: Within the limitations of the study, all cements bonded satisfactorily to the new Celtra Duo glass ceramic even in self-cure mode. This gives clinicians additional confidence regardless of the light curing in certain clinical situations. Further research is needed in evaluating the bond strengths when cured through the actual crown.
Methods: Celtra Duo blocks were sectioned into 3mm×3.5mm slabs (n=72) and mounted in acrylic. The surface was ground with 320 and 600 grit abrasive paper. A thin layer of IPS Ceramic Etching Gel was applied(20sec), rinsed(60sec), placed in ultrasonic bath(10min) and blot dried(10sec) and cemented as in table below . The specimens were allowed to self-cure at 37°C for 10 minutes and debonded after 24hr water storage. Shear bond strength (SBS) values were obtained with Universal tester/Instron 4400 at crosshead speed of 1 mm/min. A one-way ANOVA and Tukey post-hoc analysis were performed for each group.
Results: There is no statistically significant difference (p>.05) between the bond strengths of tested cements on Celtra Duo in self-cure mode.
Conclusions: Within the limitations of the study, all cements bonded satisfactorily to the new Celtra Duo glass ceramic even in self-cure mode. This gives clinicians additional confidence regardless of the light curing in certain clinical situations. Further research is needed in evaluating the bond strengths when cured through the actual crown.