The Effect of Surface Treatments on the Micro-shear Bond Strength of a Resin Luting Agent and Four All-ceramic Systems

Abstract

SUMMARYObjective. The current study evaluated the micro-shear bond strength between a resin luting agent and four strengthened all-ceramic systems under different surface treatments.Methods. Rectangular specimens of IPS Empress 2 (Ivoclar-Vivadent), Cergogold (DeguDent), In Ceram Alumina (Vita) and Cercon (DeguDent) ceramics were fabricated and randomly divided into three groups: 1-no treatment; 2-etched with 9.5% hydrofluoric acid and 3-airborne-particle abraded with 50 µm aluminum oxide particles. The ceramic surfaces of the specimens were coated with a silane agent (Clearfil Porcelain Bond, Kuraray), then bonded with a resin-luting agent (Panavia F, Kuraray). A micro-shear bond test was carried out to measure the bond strength. Moreover, each ceramic surface was observed morphologically by scanning electron microscopy. The results were submitted to analysis of variance and Tukey's posthoc analysis (p<0.05). SMP Torres • GA Borges • AM Spohr AADB Cury • S Yadav • JA Platt Clinical RelevanceThe bond strength between ceramics and a resin luting agent is affected by the ceramic surface treatment, which is dependent on the ceramic composition. Laboratory ResearchResults. The bond strength of all ceramic systems evaluated was affected by the surface treatments (p<0.05). The highest values for bond strength of IPS Empress 2 were found when the surface treatment used was hydrofluoric acid etching, followed by airborne particle abrasion treatment. On the other hand, airborne particle abrasion treatment and acid etching were not different for Cergogold and In Ceram Alumina ceramics, but they were higher when compared to the control (p<0.05). The highest bond strength to Cercon was found when it was treated with airborne particle abrasion with aluminum oxide. The SEM photographs showed that the hydrofluoric acid etching treatment affected the surface of IPS Empress 2 and Cergogold; however, Cercon and In Ceram surface morphology were not changed by the hydrofluoric acid etching. The airborne particle abrasion treatment altered the Cercon ceramic morphology but it did not change the other ceramic's surface.

A Review of Surface Treatment Methods to Improve the Adhesive Cementation of Zirconia-Based Ceramics

“…This procedure is generally followed by application of a silane coupling agent, that is able to bond with the silicone dioxide (SiO 2 ) and copolymerizes with the organic matrix of the resin cement [2]. The lack of a glassy matrix and the absence of SiO 2 make acid etching plus silane application incapable of modifying and treating the zirconia surface [9][10][11][12], with no apparent improvement in bond strength [7,8,13].…”

The effect of five kinds of surface treatment agents on the bond strength to various ceramics with thermocycle aging

“…All-ceramic restorations have many advantages in terms of color appearance including translucence and fluorescence and in biocompatibility [1][2][3] . Various all-ceramic restorative materials fabricated by distinct laboratory techniques have been introduced 4) . Feldspathic porcelain ceramics composed mostly of glass exhibit the highest esthetics, in which a reduction in filler particle composition increases translucence, but decreases the mechanical properties 5,6) .…”

The Influence of Surface Standardization of Lithium Disilicate Glass Ceramic on Bond Strength to a Dual Resin Cement

“…[1][2][3] According to the manufacturer's literature, IPS Empress 2 (Ivoclar Vivadent) is based on one main crystalline phase with elongated lithium disilicate crystals, a secondary crystalline phase with lithium orthophosphate, and a glass phase surrounding the crystalline phase. Hydrofluoric acid reacts with the glass and secondary crystalline phases, creating surface irregularities and increasing the microretentive surface area into which the bonding agent can flow, thus optimizing the interaction between the resin bonding agent and glass ceramic.…”

“…1,2 Pressable lithium disilicate-based glass ceramic is a partially crystallized glass obtained from the controlled growth and nucleation of crystals in the glassy phase. It can be defined as a ceramic composed of one glassy phase and at least one crystalline phase.…”