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CC BY-NC-ND 4.0 · Eur J Dent 2019; 13(02): 222-228
DOI: 10.1055/s-0039-1696076
Original Article
Dental Investigation Society

Bonding Strength of Luting Cement to Zirconia-Based Ceramic Under Different Surface Treatments

Fabio Mendes
1   Department of Prosthodontics, Western State University of Paraná - Dental School, Cascavel, Paraná, Brazil
,
Mauricio M. Zanini
2   Department of Restorative Dentistry, Dental Materials Division, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
,
Jamille Favarão
2   Department of Restorative Dentistry, Dental Materials Division, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
,
Veridiana Camilotti
3   Department of Restorative Dentistry, Western State University of Paraná–UNIOESTE, Dental School, Cascavel, Paraná, Brazil
,
Mario A. C. Sinhoreti
2   Department of Restorative Dentistry, Dental Materials Division, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
,
Marcio J. Mendonça
1   Department of Prosthodontics, Western State University of Paraná - Dental School, Cascavel, Paraná, Brazil
,
Simonides Consani
2   Department of Restorative Dentistry, Dental Materials Division, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
› Author Affiliations
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Publication History

Publication Date:
01 October 2019 (online)

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Abstract

Objectives The aim of this study was to evaluate the bonding strength of self-adhesive luting cement to zirconia under different surface treatments.

Materials and Methods Thirty-two zirconia samples were randomly divided into eight experimental groups based on the surface treatment employed (Control: no surface treatment; PMM: wear with diamond bur; JAT: blasting with glass beads; PMA: wear with a medium-roughness milling machine; Primer: primer application on the surface without treatment; PMM +Primer: PMM treatment plus primer application; JAT+Primer: JAT treatment plus primer application; and PMA+Primer: PMA treatment plus primer application). Cement cylinders were built on the ceramic surfaces, and the groups were subdivided according to the storage time employed (i.e., 24 hours or 60 days). After storage, the samples were subjected to microshear testing.

Statistical Analysis The Kruskal–Wallis test followed by the Dunn test was employed for comparison between the groups (p < 0.05).

Results The PMM group yielded the optimal results and the mean values increased after both storage times following the primer application. The Control, PMA, and JAT groups gave similar results after 24 hours, while the JAT group gave superior results following primer application over this storage time. After 60 days of storage, all groups gave improved results following chemical treatment with a primer.

Conclusion It was concluded that mechanical preparation using the diamond bur followed by primer application significantly improved the bond strength between the ceramic and the luting cement.

Keywords

ceramics - shear strength - dental prostheses - zirconium
 

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