Effect of zirconia surface treatments on the shear strength of zirconia/veneering ceramic composites

Fischer, Jens; Grohmann, Philipp; Stawarczyk, Bogna (2008). Effect of zirconia surface treatments on the shear strength of zirconia/veneering ceramic composites. Dental materials journal, 27(3), pp. 448-54. Tokyo: Japanese Society for Dental Materials and Devices 10.4012/dmj.27.448

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Aim of the investigation was to assess the effect of different surface treatments on the bond strength of veneering ceramics to zirconia. In a shear test, the influences of polishing, sandblasting, and silica-coating of the zirconia surface on bonding were assessed with five different veneering ceramics. In addition the effect of liner application was examined. With one veneering ceramic, the impact of regeneration firing of zirconia was also evaluated. Statistical analysis was performed with one-way ANOVA and post hoc Scheffé's test. Failure in every case occurred in the veneering ceramic adjacent to the interface with a thin layer of ceramic remaining on the zirconia surface, indicating that bond strength was higher than the cohesive strength of the veneering ceramic. Shear strength ranged from 23.5 +/- 3.4 MPa to 33.0 +/- 6.8 MPa without explicit correlation to the respective surface treatment. Regeneration firing significantly decreased the shear strength of both polished and sandblasted surfaces. Findings of this study revealed that bonding between veneering ceramics and zirconia might be based on chemical bonds. On this note, sandblasting was not a necessary surface pretreatment to enhance bond strength and that regeneration firing was not recommended.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Prosthodontics [discontinued]
04 Faculty of Medicine > School of Dental Medicine > Division of Fixed Prosthodontics [discontinued]

UniBE Contributor:

Fischer, Jens

ISSN:

0287-4547

Publisher:

Japanese Society for Dental Materials and Devices

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

04 Oct 2013 15:02

Last Modified:

25 Jan 2017 12:16

Publisher DOI:

10.4012/dmj.27.448

PubMed ID:

18717175

Web of Science ID:

000257977000017

URI:

https://boris.unibe.ch/id/eprint/26770 (FactScience: 87961)

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