Adhesive bonding of a lithium disilicate ceramic material with resin‐based luting agents

Abstract

This study evaluates the bonding characteristics of a lithium disilicate-based ceramic material (IPS Empress 2). Two sizes of disk specimens of the material were made, and three groups of disk pairs were separately surface-prepared using three techniques; etching with phosphoric acid, etching with hydrofluoric acid, and air-abrasion with alumina. Each group was further divided into four sub-groups; group (i) was bonded with the Variolink II composite, (ii) was treated with the Monobond-S silane primer and bonded with the Variolink II composite, (iii) was bonded with the Super-Bond acrylic adhesive and (iv) was treated with the Porcelain Liner M silane primer and bonded with the Super-Bond acrylic adhesive. Shear bond strengths were determined before and after 100 000 thermocycles. Bond strength varied from 10.6 to 71.5 MPa before thermocycling, whereas post-thermocycling bond strength ranged from 0 to 61.2 MPa. Among the three surface preparations, hydrofluoric acid etching (HF) was most effective in enhancing bond strength of both luting materials, especially for unsilanized specimens. Application of the silane primer elevated bond strength of both luting agents regardless of surface preparation method. It can be concluded, for both luting agents, that durable bond to the Empress 2 ceramic material can be achieved through the combined application of HF and the proprietary silane primer.

Fracture strength, failure type and Weibull characteristics of lithium disilicate and multiphase resin composite endocrowns under axial and lateral forces

“…While some authors found no significant effect on adhesion [31,32], others did [33,34]. Its effect on bond strength is contradictory and seems to depend on the number of cycles [35,36], size of the specimens [36,37] and the C-factor [38,39].…”

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

“…Durable adhesion between dental tissues and ceramics plays a crucial role in the success of restorations that do not have retentive properties [2][3][4][5][6]. When bonding ceramic restorations to dental substrates, it is crucial to ensure optimal adhesion of resin cement to both the dentin and ceramic surface [7][8][9]. Thus, the integrity of dentin-cement and cement-ceramic interface is essential for the survival of bonded restorations [10,11].…”

Evaluación In vitro de la Resistencia a la Fractura de los Pilares Individualizados en Disilicato de Litio

“…Además de ser una alternativa reciente de gran disponibilidad en nuestro medio, presenta un costo moderado. El material ofrece una resistencia de 400±40 MPa y, por medio del acondicionamiento con ácido fluorhídrico y silano, es posible la adhesión a su restauración definitiva lo que podría aumentar su resistencia (Nagai et al, 2005;Ivoclar Vivadent, 2008;Fischer et al, 2008).…”