Effect of Different Surface Treatments and Two Porcelain Repair Systems on the Shear Bond Strength of Composite to Zirconia
Introduction: Porcelain veneer fracture is one of the problems of zirconia restorations. Intraoral repair of composites can be an alternative for restorations. A stable bond between the composite and zirconia is necessary for the durability of the restoration. The present study aimed to evaluate the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | fas |
| Published: |
Mashhad University of Medical Sciences
2021-12-01
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| Series: | Journal of Mashhad Dental School |
| Subjects: | |
| Online Access: | https://jmds.mums.ac.ir/article_19231_f342af797083b28a7f1d30c047a3184c.pdf |
| Summary: | Introduction: Porcelain veneer fracture is one of the problems of zirconia restorations. Intraoral repair of composites can be an alternative for restorations. A stable bond between the composite and zirconia is necessary for the durability of the restoration. The present study aimed to evaluate the effect of different surface treatments and two porcelain repair systems on shear bond strength (SBS) of composite to zirconia.Materials and methods: In this in-vitro study, 80 zirconia discs (3mm thickness,6 mm diameter) were randomly divided into four groups included 1) control 2) sandblast with Cojet system 3) Er: YAG 4) and Nd: YAG laser irradiation. Samples in each group were treated with two repair systems (Bisco & Clearfil). The composite was placed on zirconia discs and cured. After thermocycling, SBS was determined by a universal testing machine. The data were analyzed with two-way ANOVA and Tukey HSD (α=0.05).Results: Mean SBS values ranged from 4/52± 1/26 to 13/79± 3/56 Mpa. The effect of surface treatment on the SBS was significant (p<0.001) but the difference of SBS values based on the repair system was not significant (p=0.56).Conclusion: Zirconia Sandblast with Cojet system increased SBS to composite. Treatment with two lasers failed to affect bond strength values. Two porcelain repair systems (Clearfil & Bisco) had a similar effect on the bond strength. |
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| ISSN: | 1560-9286 2008-2347 |