J Adv Prosthodont.  2016 Aug;8(4):267-274. 10.4047/jap.2016.8.4.267.

Shear bond strength of indirect composite material to monolithic zirconia

Affiliations
  • 1Department of Prosthodontics, Faculty of Dentistry, University of Gaziantep, Gaziantep, Turkey. acarasli@hotmail.com
  • 2Department of Prosthodontics, Faculty of Dentistry, University of Adiyaman, Adiyaman, Turkey.
  • 3Department of Restorative Dentistry, Faculty of Dentistry, University of Gaziantep, Gaziantep, Turkey.

Abstract

PURPOSE
This study aimed to evaluate the effect of surface treatments on bond strength of indirect composite material (Tescera Indirect Composite System) to monolithic zirconia (inCoris TZI).
MATERIALS AND METHODS
Partially stabilized monolithic zirconia blocks were cut into with 2.0 mm thickness. Sintered zirconia specimens were divided into different surface treatment groups: no treatment (control), sandblasting, glaze layer & hydrofluoric acid application, and sandblasting + glaze layer & hydrofluoric acid application. The indirect composite material was applied to the surface of the monolithic zirconia specimens. Shear bond strength value of each specimen was evaluated after thermocycling. The fractured surface of each specimen was examined with a stereomicroscope and a scanning electron microscope to assess the failure types. The data were analyzed using one-way analysis of variance (ANOVA) and Tukey LSD tests (α=.05).
RESULTS
Bond strength was significantly lower in untreated specimens than in sandblasted specimens (P<.05). No difference between the glaze layer and hydrofluoric acid application treated groups were observed. However, bond strength for these groups were significantly higher as compared with the other two groups (P<.05).
CONCLUSION
Combined use of glaze layer & hydrofluoric acid application and silanization are reliable for strong and durable bonding between indirect composite material and monolithic zirconia.

Keyword

Zirconia; Composite resin; Shear strength; Scanning electron microscopy; Surface properties

MeSH Terms

Hydrofluoric Acid
Lysergic Acid Diethylamide
Microscopy, Electron, Scanning
Shear Strength
Surface Properties
Hydrofluoric Acid
Lysergic Acid Diethylamide
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