CC BY 4.0 · Eur J Dent
DOI: 10.1055/s-0045-1806933
Original Article

The Effect of Cement Thickness on Shear Bond Strength of Zirconia with Three Different Self-Adhesive Resin Cements

1   Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Pathumwan, Bangkok, Thailand
,
Suparaksa Yamockul
1   Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Pathumwan, Bangkok, Thailand
,
Niyom Thamrongananskul
1   Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Pathumwan, Bangkok, Thailand
,
Atikom Surintanasarn
1   Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Pathumwan, Bangkok, Thailand
,
2   Division of Restorative Dentistry, Faculty of Dentistry, Thammasat University, Pathum Thani, Thailand
› Institutsangaben
Funding This study was supported by the Dental Research Fund, Faculty of Dentistry, Chulalongkorn University.

Abstract

Objectives

This study aimed to evaluate the influence of resin cement thickness on the shear bond strength (SBS) of zirconia bonded with three different self-adhesive resin cements (SACs).

Materials and Methods

One hundred and twenty zirconia specimens were prepared. Zirconia disks were milled into a cuboidal shape of size 8 × 8 × 6 mm3 using a milling machine, sintered according to the manufacturer's instruction, polished with sandpaper, airborne particle abraded with 50 μm aluminum oxide particles, and randomly divided into 12 groups (n = 10), according to the cement thickness (50, 100, 150, and 200 μm) and SAC (RelyX U200, PANAVIA SA LUTING Multi, and Maxcem Elite Chroma). The specimens were cemented to the resin composite blocks with SAC, stored in water at 37°C for 24 hours, and subjected to the SBS test. Mode of failure was evaluated under a stereo microscope. The data were statistically analyzed using two-way ANOVA and the Tukey HSD test to compare the differences in mean SBSs between groups at 95% confidence level.

Results

Statistical analysis revealed significant differences in SBS (p < 0.05) across the SACs, with the highest mean observed in the 50 μm cement thickness group and decreased as cement thickness increased. PANAVIA SA LUTING Multi exhibited the highest SBS, followed by the RelyX U200 groups, with the lowest SBS observed in Maxcem Elite Chroma groups (p < 0.05). In addition, the predominant mode of failure in all groups, except RelyX U200 and Maxcem Elite Chroma groups with the thickness of 200 μm, was score 4 (no resin cement remained on the zirconia surface).

Conclusion

The difference in cement thickness and the type of SAC affected the SBS to zirconia. The lesser the cement thickness, the higher the SBS. 10-MDP-based cements, which provide the highest bond strength to zirconia and low cement thickness, are suggested for zirconia cementation to achieve a strong bond between zirconia and resin cement.



Publikationsverlauf

Artikel online veröffentlicht:
01. Mai 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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