Influence of multimode universal adhesives and zirconia primer application techniques on zirconia repair.

Bruno Seabra, Sofia Arantes-Oliveira, Jaime Portugal

Journal: The Journal of prosthetic dentistry 2015;112(2):182-7

PMID: 24445031

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Abstract

STATEMENT OF PROBLEM

More information is needed on the efficacy of the new universal adhesives and on the best 10-methacryloyloxydecyl dihydrogen phosphate- (MDP)-containing primer protocol to promote adhesion to zirconia.

PURPOSE

The aim of this study was to evaluate the influence of 2 new multimode MDP-containing adhesives and several application protocols of a zirconia primer on the shear bond strength (SBS) of composite resin to zirconia.

MATERIAL AND METHODS

Sixty zirconia (3Y-TZP) blocks were abraded (50 μm Al2O3) and divided into 6 experimental groups (n=10): one Z-Prime Plus coat without light polymerization; one Z-Prime Plus light-polymerized coat; two Z-Prime Plus coats without light polymerization; two Z-Prime Plus light-polymerized coats; All-Bond Universal; and ScotchBond Universal Adhesive. Multimode adhesives were applied according to the manufacturers' recommendations. After composite resin (Filtek Z250) light polymerization, the specimens were stored in distilled water (37°C/48 hours) and tested in shear (1 mm/min). Failure mode was classified as adhesive or mixed. Statistical analysis of the SBS data was performed with 1-way ANOVA followed by the Student-Newman-Keuls post hoc tests. Nonparametric tests (Kruskal-Wallis) were used to analyze the failure mode data (α=.05).

RESULTS

The ScotchBond Universal Adhesive, All-Bond Universal, and two Z-Prime Plus light-polymerized coats groups showed a higher mean SBS than the other experimental groups (P<.05). The 3 groups with the lowest mean SBS registered 100% of adhesive failures.

CONCLUSIONS

The new multimode adhesives tested were effective in promoting adhesion between composite resin and zirconia. Z-Prime Plus should be applied in 2 light-polymerized coats to promote SBS values similar to those of the new multimode adhesives.

Address: Assistant Professor, Department of Dental Materials and Imagiology, Faculty of Dental Medicine, University of Lisbon, Lisbon, Portugal. Electronic address: [email protected].; Associate Professor and Head, Department of Geriatric Dentistry, Faculty of Dental Medicine, University of Lisbon, Lisbon, Portugal.; Associate Professor and Head, Department of Dental Materials, Faculty of Dental Medicine, University of Lisbon, Lisbon, Portugal.

DOI: 10.1016/j.prosdent.2013.10.008

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MeSH Terms: Aluminum Oxide, Ceramics, Composite Resins, Dental Bonding, Dental Etching, Dental Materials, Dental Prosthesis Repair, Dental Stress Analysis, Humans, Light-Curing of Dental Adhesives, Materials Testing, Methacrylates, Polymerization, Resin Cements, Shear Strength, Stress, Mechanical, Surface Properties, Temperature, Time Factors, Water, Yttrium, Zirconium