Influence of surface treatment of contaminated zirconia on surface free energy and resin cement bonding

Abstract

Influences of contamination and cleaning methods on the bonding of resin cement to zirconia ceramics were examined. Airborne particle-abraded zirconia (IPS e.max ZirCAD) specimens were contaminated with saliva and cleaned with tap water (SC) or by application of 37% phosphoric acid (PA), Ivoclean (IC), or additional airborne particle abrasion (AB). Specimens without contamination served as controls. After application of Monobond Plus to the surface of the specimens, resin cement was mixed and inserted into a mold. Surface free energies of the specimens were determined by measuring contact angles. Surface treatment and storage conditions significantly influenced bond strength, while there was no significant interaction between the two factors. Surface free energies of the SC and IC groups were significantly lower than those of the other groups. Additional AB of saliva-contaminated zirconia increased the strength of bonding with the resin cement as well as increased surface free energy.

Influence of surface treatment of contaminated lithium disilicate and leucite glass ceramics on surface free energy and bond strength of universal adhesives

“…It has been reported that the γ S d values of oxidized surfaces measured using this method were approximately 40 mN/m 18,20) , whereas those of surfaces coated with polytetrafluoroethylene were approximately 20 mN/m. The total surface free energy, γ S p , and γS h values of the SC group were significantly lower than those of the control, TE and CE groups.…”

“…The wettability of the surface is important for 18) . The strength of the bond between the ceramic and the resin depends on several factors, including the surface treatment of ceramics and the ability of the resin to wet the bonding surface 6) .…”

Bonding effectiveness of self-adhesive and conventional-type adhesive resin cements to CAD/CAM resin blocks. Part 2: Effect of ultrasonic and acid cleaning

“…The effect of surface contamination with saliva and subsequent cleaning with phosphoric acid has been described 11,12) and the authors recommend that restorations be sandblasted to increase bonding effectiveness. To clean the bonding surface of restoration, ultrasonic cleaning, which is safe and easy, is frequently 13,14) .…”

Improvement in the Tensile Bond Strength between 3Y-TZP Ceramic and Enamel by Surface Treatments

“…Sandblasting also increases surface roughness as well as surface area and surface energy, thus making it possible to achieve stronger mechanical durability of the restoration. Moreover, it can also increase wettability of resin cements or silane primers [20,21]. …”