Effect of the Surface Treatment Method Using Airborne-Particle Abrasion and Hydrofluoric Acid on the Shear Bond Strength of Resin Cement to Zirconia

Abstract

The purpose of this study was to evaluate the shear bond strength (SBS) of two different resin cements (Panavia F 2.0 (Kuraray Medical Inc, Okayama, Japan) and Variolink N (Ivoclar Vivadent AG, Schaan, Liechtenstein)) to 112 zirconia specimens with airborne-particle abrasion and 20%, 30%, or 40% hydrofluoric acid (HF) for 1 or 2 h. A total of eight specimens were used to observe the phase transformation after surface treatments. Six specimens were treated only with HF etching and the average surface roughness (Ra) was analyzed. A one-way ANOVA test was applied for SBS and the effect of HF concentration on Ra. An independent t-test was performed for the comparison of Panavia F 2.0 and Variolink N, and the influence of the HF application time on Ra. A higher HF solution increased SBS and Ra. HF etching produced a lower rate of monoclinic phase transformation. Panavia F 2.0 showed a higher SBS than Variolink N.

Effect of Low-Concentration Hydrofluoric Acid Etching on Shear Bond Strength and Biaxial Flexural Strength after Thermocycling

“…In the present study, phase transformation occurred before and after the thermocycling for all groups subjected to the surface treatment, which is similar to previous studies; this suggests that airborne-particle abrasion and etching can lead to a phase transformation [7,34,42]. In particular, the increased monoclinic phase before and after thermocycling in the etching surface treatment can be presumed to be due to the structural deformation caused by heat treatment during etching.…”

“…Zirconia restorations are not silica-based ceramics; therefore, resin bonding is difficult. Numerous researchers have focused on characterizing the effects of zirconia surface treatment methods (STMs) on the adhesions between resin cement and zirconia [4][5][6][7]. STMs include the following five micro-mechanical and chemical bonding techniques: mechanical treatment, chemical treatment, lasers, silicon coatings, and coupling agents [8].…”

Shear Bond Strength of Aged Monolithic Zirconia Veneers Using Different Types of Bonding agent

“…The phosphate ester group of the MDP was reported to directly bond to metal oxide 7 . Another reaction might have been formed between the hydroxyl group in the MDP monomer and the hydroxyl group on the zirconia surface 8 . But it is not obvious whether there is a true chemical bond with zirconia or there is a micro-retentive bond promoted by sand blasting.…”

Influence of chemical etching on bond strength of translucent zirconia to resin cement

“…12,13 Resin cement with MDP (10-methaacryloyloxyidecldihyidrogen-phosphate) monomer is recommended to get the best bond to zirconia ceramics. 10,14,15 Surface pre-treatments are needed for longterm bonding between the indirect restoration and the tooth structure, moreover, the cementation technique influences the clinical success of a ceramic restoration. 16,17 To strengthen the bonding of zirconia restorations, various surface pretreatment approaches have been suggested.…”