RESEARCH ARTICLE


Evaluation of the Effect of Glow Discharge Plasma Surface Treatment on Bonding Cements to Zirconia



Abdulelah M. Binmahfooz1, Ghadeer I. Basunbul1, *, Aws S ArRejaie2
1 Faculty of Dentistry - King Abdulaziz University, Jeddah, Saudi Arabia
2 Department of Prosthetic Dental Sciences, King Saud University, Riyadh, Saudi Arabia


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Creative Commons License
© 2018 Binmahfooz et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address Correspondence to this author at the Faculty of Dentistry - King Abdulaziz University, Jeddah, Saudi Arabia; Tel: +966555595707; E-mail: dr_basunbul@yahoo.com


Abstract

Background:

The major difference in the chemical composition of Y-TZP ceramics, as compared with conventional porcelain, led researchers to develop alternative solutions for achieving durable and long term bonding with the zirconia surface.

Objective:

The study aims to evaluate the effects of glow discharge treatment on the bonding between cement and zirconia.

Methods:

The zirconia rings and rods were prepared with the Zirconia Y-TZP powder and TZ-3YSB-E (Tosoh-Zirconia) through auto-mix to investigate the glow discharge and thermo-cycling. An orientation Teflon mold was used to centralize each rod into the zirconia ring, and aided as a cementation jig during the cementation procedure.

Results:

Cohesive failure (2/3 or more of luting agent remained on the zirconia surface) has been majorly observed with RelyX Ultimate, while adhesion failure (less than 1/3 of the luting agent remained on the zirconia surface) has been primarily observed in Ketac-Cem. Mixed failure was observed among the three specimen including Rely X Unicem 2, Multilink Auto-mix and Ceramir.

Conclusion:

The glow discharge surface treatment procedure had a major impact on bond strength to zirconia.

Keywords: Glow discharge plasma, Bonding cement, Zirconia, Cohesive failure, Adhesive failure, Y-TZP ceramics.