Comparison of Micro-Shear Bond Strength of Resin Cement to Zirconia With Different Surface Treatments Using Universal Adhesive and Zirconia Primer

Abstract

Please cite this article as follows: Ranjbar Omidi B, Karimi Yeganeh P, Oveisi S, Farahmandpour N. Comparison of micro-shear bond strength of resin cement to zirconia with different surface treatments using Universal Adhesive and zirconia primer. AbstractIntroduction: Increased demand for metal free fixed partial denture in recent years led to the developing of all ceramic material with excellent mechanical properties. One of the most popular all ceramic is zirconia which shows poor bonding properties. Recently, universal primer contains of silane and phosphate monomer for bond to zirconia have been introduced. The aim of this study is determination of the best method for bonding to zirconia based on the selection of the correct primer, suitable adhesive and best surface pretreatment. Methods: In this in vitro experimental study 16 sintered-zirconia blocks prepared in dimension of (18×6×2 mm) by CAD/CAM technology. Sample cleansed by ultrasonic device contain of 96% ethanol in 6 minutes, after air-drying, based on surface treatment randomly divided into 4 groups which each group divided into 2 sub-groups based on the use of a primer or universal bond: (1) no treatment: (a) cement + zirconia primer, (b) cement + universal bond. (2) Alumina pretreatment: (a) cement + zirconia primer, (b) cement + universal bond. (3) Cojet sand pretreatment: (a) cement + zirconia primer, (b) cement + universal bond. (4) laser pretreatment (a) cement + zirconia primer, (b) cement + universal bond. Composite disc prepared with condensation of composite resin in Tygon tube with integral diminution of 0.7 mm which cured for 40 sconds. Universal bond or zirconia primmer apply on the surface of the zirconia samples then cemented to composite disks by Panavia F2 according manufacture instructions. Microshear bond strength determined with universal testing machine. Failure mode assessed under stereomicroscope. Selected sample based on surface treatment evaluated under SEM. Data were analyzed using one-way analysis of variance (ANOVA).Results: Comparison of the 4 surface treatment groups revealed a significant difference and the highest bond belonged to Cojet and the lowest one to laser group. Conclusion: It seems that Universal Adhesive can to be considered as an alternative to bond to zirconia but the Cojet method is still required.

Effects of Universal Adhesive on Shear Bond Strength of Resin Cement to Zirconia Ceramic with Different Surface Treatments

“…Amaral et al and Ranjbar Omidi et al used a universal adhesive and Z-Prime Plus, similar to our study, and reported that the universal adhesive along with sandblasting was an acceptable option for bonding of zirconia ceramics [ 11 , 20 ]. Their results were in agreement with our findings.…”

An investigation of atomic force microscopy, surface topography and adhesion of luting cements to zirconia: effect of silica coating, zirconia primer and laser

“…Furthermore, wettability of the silane coupling agent into the deep grooves after air-abrasion may not be ideal [18]. Nevertheless, mechanical and chemical benefits of tribochemical silica coating increases the adhesion of resin cements to zirconia depending in the cement type [11,[26][27][28][29][30][31]. On the other hand, silica coating may not always result in a uniform distribution of silica layer on the zirconia surfaces and the chemical bonding with silane coupling agent is prone to hydrolytic degradation [5,9,32,33], resulting in decrease in adhesion of resin cements to zirconia after artificial aging.…”

Effects of Different Laser Treatments on Some Properties of the Zirconia-Porcelain Interface

“…4 Effective bonding relies on micro-mechanical interlocking between zirconia and the veneering porcelain, which is a very essential factor for the longevity of zirconia restorations. 5 Unlike zirconia, veneering porcelain does not have good mechanical properties, and the nonexistence of strong bonding at the interface between zirconia and the veneering porcelain may result in fractures in the dental restoration. 6 Factors affecting bond strength, including mechanical and chemical bonding, residual stress, and wettability, can affect the bonding between zirconia and porcelain.…”