J Adv Prosthodont.  2016 Oct;8(5):339-344. 10.4047/jap.2016.8.5.339.

Shear bond strength of veneering ceramic to coping materials with different pre-surface treatments

• Tarib NA
• Anuar N
• Ahmad M

• KMID: 2355437
• DOI: http://doi.org/10.4047/jap.2016.8.5.339

Abstract

PURPOSE
Pre-surface treatments of coping materials have been recommended to enhance the bonding to the veneering ceramic. Little is known on the effect on shear bond strength, particularly with new coping material. The aim of this study was to investigate the shear bond strength of veneering ceramic to three coping materials: i) metal alloy (MA), ii) zirconia oxide (ZO), and iii) lithium disilicate (LD) after various pre-surface treatments.
MATERIALS AND METHODS
Thirty-two (n = 32) discs were prepared for each coping material. Four pre-surface treatments were prepared for each sub-group (n = 8); a) no treatment or control (C), b) sandblast (SB), c) acid etch (AE), and d) sandblast and acid etch (SBAE). Veneering ceramics were applied to all discs. Shear bond strength was measured with a universal testing machine. Data were analyzed with two-way ANOVA and Tukey's multiple comparisons tests.
RESULTS
Mean shear bond strengths were obtained for MA (19.00 ± 6.39 MPa), ZO (24.45 ± 5.14 MPa) and LD (13.62 ± 5.12 MPa). There were statistically significant differences in types of coping material and various pre-surface treatments (P<.05). There was a significant correlation between coping materials and pre-surface treatment to the shear bond strength (P<.05).
CONCLUSION
Shear bond strength of veneering ceramic to zirconia oxide was higher than metal alloy and lithium disilicate. The highest shear bond strengths were obtained in sandblast and acid etch treatment for zirconia oxide and lithium disilicate groups, and in acid etch treatment for metal alloy group.

Keyword

Shear bond strength; Pre-surface treatment; Metal alloy; Zirconia; Lithium disilicate

MeSH Terms

Alloys
Ceramics*
Lithium
Alloys
Lithium

Figure

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  Fig. 1 The effects of pre-surface treatments and coping material on shear bond strength of veneering ceramic.

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