Cedrone Aristea1, Comba Allegra1, Tempesta Riccardo1, Beruø Elio1 ...
# 0173
Effect of Er-‐YAG or bur on bond strenght with different adhesive procedures 1 1 1 1 1 Cedrone Aristea , Comba Allegra , Tempesta Riccardo , BeruF Elio , ScoF Nicola 1University of Turin, Department of Surgical Sciences, Dental School
PURPOSE:
RESULTS:
The aim of this in vitro study is to evaluate the bond strength obtained with different adhesive strategies on coronal dentin cutted with Er-YAG laser or bur
The statistical analysis showed that CT influenced the bond strength only when etch&rinse techniques where employed to bond composite to coronal dentin. Any differences were fond between laser and bur when self-etch approach, either 2 step or 1 step, was employed
METHODS AND MATERIALS: 40 molars crowns were flattened and standardized smear layer was created. Samples were divided in two groups according to the dentin cutting technique ( n=20 ): Er-YAG laser or bur. Every group was then divided in subgroups ( n=5 each) according to the adhesive technique: SG1:dentin etching for 15sec and universal adhesive application (AllBond Universal, Bisco) SG2: Universal adhesive application (AllBond Universal, Bisco) SG3: 2step self-etch adhesive application (Clearfil SEBond 2, Kuraray) SG4: 3step etch-and-rinse adhesive application (Optibond FL, Kerr) Adhesives were all cured for 60sec at 1400mW with Valo. Then resin composite was applied. Specimens were serially sectioned to obtain 1-mmthick beams in accordance with μTBS test technique. Beams were stressed to failure after 7 days of storage in artificial buffer. Two-way ANOVA was performed to evaluate the effects of cutting technique (CT) and adhesive technique (AT) and their interaction on the coronal dentin bond strength. Significance was set at p
Effect of Er-‐YAG or bur on bond strenght with different adhesive procedures 1 1 1 1 1 Cedrone Aristea , Comba Allegra , Tempesta Riccardo , BeruF Elio , ScoF Nicola 1University of Turin, Department of Surgical Sciences, Dental School
PURPOSE:
RESULTS:
The aim of this in vitro study is to evaluate the bond strength obtained with different adhesive strategies on coronal dentin cutted with Er-YAG laser or bur
The statistical analysis showed that CT influenced the bond strength only when etch&rinse techniques where employed to bond composite to coronal dentin. Any differences were fond between laser and bur when self-etch approach, either 2 step or 1 step, was employed
METHODS AND MATERIALS: 40 molars crowns were flattened and standardized smear layer was created. Samples were divided in two groups according to the dentin cutting technique ( n=20 ): Er-YAG laser or bur. Every group was then divided in subgroups ( n=5 each) according to the adhesive technique: SG1:dentin etching for 15sec and universal adhesive application (AllBond Universal, Bisco) SG2: Universal adhesive application (AllBond Universal, Bisco) SG3: 2step self-etch adhesive application (Clearfil SEBond 2, Kuraray) SG4: 3step etch-and-rinse adhesive application (Optibond FL, Kerr) Adhesives were all cured for 60sec at 1400mW with Valo. Then resin composite was applied. Specimens were serially sectioned to obtain 1-mmthick beams in accordance with μTBS test technique. Beams were stressed to failure after 7 days of storage in artificial buffer. Two-way ANOVA was performed to evaluate the effects of cutting technique (CT) and adhesive technique (AT) and their interaction on the coronal dentin bond strength. Significance was set at p
