RESEARCH AND EDUCATION

Shear bond strength between resin cement and colored zirconia made with metal chlorides Ga-Hyun Kim, MSD,a Sang-Won Park, DDS, PhD,b Kwangmin Lee, PhD,c Gye-Jeong Oh, PhD,d and Hyun-Pil Lim, DDS, PhDe INTRODUCTION

ABSTRACT

Statement of problem. Although the application of zirconia in esthetic prostheses has increased, Zirconia is widely used as the the shear bond strength (SBS) between colored zirconia and resin cement has not been core for ceramic crowns. It has investigated. high wear resistance and fracPurpose. The purpose of this study was to compare the SBS between resin cement and colored ture toughness as well as a zirconia made with metal chlorides. high flexural strength of 900 to 1400 MPa.1,2 Moreover, zircoMaterial and methods. Sixty-four zirconia specimens were divided into 2 groups: one in which the nia does not promote inflamspecimens were bonded with resin cement, including 4-META (4-methacryloxyethyl trimellitic anhydride), and one in which the specimens were bonded with resin cement (SEcure, Sun matory or allergic reactions.3 Medical) after being processed with zirconia primer (Zirconia Liner), including 4-META. Each Because of its biocompatibility group was then divided into 4 subgroups depending on the coloring liquid. The subgroups were and these physical properties, noncolored (control), commercial coloring liquid VITA In-Ceram 2000 YZ LL1, aqueous chromium zirconia is often used in clinichloride solution 0.1 wt%, and aqueous molybdenum chloride solution 0.1 wt%. Composite resin cal situations as an alternative cylinders (Filtek Z250, 3M ESPE) were fabricated and bonded to the surface of the zirconia to metals.4 However, the color specimen with resin cement (SEcure). All specimens were stored in 37 C distilled water for 24 of zirconia is opaque white, hours, and the SBS was measured with a universal testing machine. All data were analyzed statistically with 2-way ANOVA and tested post hoc with the Tukey test (a=.05). which makes it difficult to fabricate esthetic prostheses. This Results. Significant differences were observed among the SBS values of the colored zirconia esthetic limitation can be overdepending on the coloring liquid (P

Shear bond strength between resin cement and colored zirconia made with metal chlorides.

Although the application of zirconia in esthetic prostheses has increased, the shear bond strength (SBS) between colored zirconia and resin cement has...
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