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Bonding Polycrystalline Zirconia With 10-MDP-containing Adhesives

Bonding Polycrystalline Zirconia With 10-MDP-containing Adhesives

A E Llerena-Icochea, R M Costa, Afs Borges, Jfs Bombonatti, A Y Furuse

Oper Dent. May/Jun 2017;42(3):335-341.

PMID: 28467265

Abstract:

Objective:
The objective of this study was to evaluate the influence of adhesives with different 10-MDP concentrations on the shear bond strength of a resin cement to zirconia.
Methods and materials:
Six experimental adhesives were prepared with the following composition: camphorquinone, 1,2-diaminobenzene, butylhydroxytoluene, diphenyliodonium hexafluorophosphate, 2-hydroxyethyl methacrylate triethylene glycol dimethacrylate, ethoxylated bisphenol A glycol dimethacrylate, urethane dimethacrylate, bisphenol A diglycidyl methacrylate, and ethanol. The 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) monomer was added at 0wt%, 3wt%, 6wt%, 9wt%, 12wt%, or 15wt%. Three commercially available adhesives were evaluated: Single Bond Universal, Single Bond 2, and Signum Zirconia Bond. Resin cement cylinders made with RelyX Ultimate were bonded to yttria-stabilized tetragonal zirconia polycrystal with one of the evaluated adhesives and were subjected to the shear bond strength evaluation. Failure modes were analyzed with a stereoscopic loupe. Statistical analyses were performed with one-way analysis of variance and the Tukey's Honestly Significant Difference test (α=0.05). Pearson's was used to correlate the percentage of 10-MDP in the experimental adhesives and shear bond strength.
Results:
There were significant differences between adhesives (p<0.00001). The highest shear bond strength values were obtained with the Signum Zirconia Bond and Single Bond Universal. Single Bond 2 showed the lowest values. There were no differences between experimental adhesives. All groups showed adhesives failures. A nonlinear correlation was found between bond strength and percentage of 10-MDP in experimental adhesives (r=0.872).
Conclusions:
The commercially available adhesives indicated for bonding to zirconia showed the highest bonding values.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP58109403	Diphenyliodonium hexafluorophosphate		58109-40-3	Price

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