Does Sandblasting Improve Bond Strength between Nano-ceramic Resin and Two Different Luting Composites?
Augusti Davide, Augusti Gabriele*, Cerutti Francesca and Re Dino
Department of Biomedical, Surgical and Dental Sciences, University of Milan, Division of Oral Rehabilitation, Istituto Stomatologico Italiano, Milan, Italy
- Corresponding Author:
- Augusti Gabriele
Division of Oral Rehabilitation, School of Dentistry
Prosthodontics Division, University of Milan
Via Pace 21, 20122, Milan, Italy
E-mail: [email protected]
Received date: September 18, 2015 Accepted date: October 26, 2015 Published date: November 05, 2015
Citation: Augusti D, Gabriele A, Francesca C, Dino R (2015) Does Sandblasting Improve Bond Strength between Nano-ceramic Resin and Two Different Luting Composites? Bioceram Dev Appl 5:086. doi:10.4172/2090-5025.1000086
Copyright: © 2015 Augusti D, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Purpose: To assess how sandblasting influences shear bond strength (SBS) between nano-ceramic-resin and two resin cements. Methods: 40 nano-ceramic-resin blocks were divided into two groups (n=20): a control (C) and a test group (S_50) where air abrasion (50 µm, 0.28 MPa,10 s) was applied. Each group was divided into two subgroups (n=10) according to the applied luting material: a self-etch dual-cure resin cement (LP) and a dual-cure resin cement (LR). SBSs were determined with a universal testing machine at a crosshead speed of 0.5 mm/min. Fracture patterns were evaluated by a stereomicroscope (25x) and classified into adhesive, cohesive and mixed. One-way ANOVA test (α=.01) was used to establish differences between groups, considering SBS as dependent and the type of surface treatment as independent variable. Results: Mean SBS (MPa) obtained for P were 8.68 ± 1.16 for C and 13.91 ± 2.58 for S_50. Sandblasting positively affected (p<0.01) the self-adhesive cement adhesion to nano-ceramic resin. Group C_LP showed 100% of adhesive fractures, while S_50_LP had some cohesive (20%) and mixed fractures (10%). The fracture pattern of group C_LR was 60% cohesive, 20% adhesive and 20% mixed, while group S_50-LR showed 100% of cohesive failure. Conclusion: Sandblasting is suggested when luting nano-ceramic resin with LP.