The Effect of Surface Preparation and Luting Agent on Bond Strength to a Zirconium-based Ceramic

Abstract

©Operative Dentistry, 2007, 32-6, 623-630 DP Senyilmaz • WM Palin ACC Shortall • FJT Burke Clinical RelevanceAlthough clinical situations may exist where the adhesive luting of high-density milled ceramics for crown or fixed partial dentures are not required, certain clinical situations, such as the chairside repair of existing ceramic restorations, poor retention or inadequate abutment tooth size, will require a durable adhesive layer between the resin and ceramic. This study investigates the efficacy of modern "self-adhesive" luting cements on a zirconia-based ceramic following various surface preparations SUMMARY Objectives: To investigate the bond strength of modern "self-adhesive" resin cements to a zirconium-based dental ceramic following different surface preparations and storage conditions. Methods: The surface of zirconium-based ceramic discs (12 x 2 mm) were either left untreated, prepared using alumina grit-blasting or tribochemical treatment. Resin composite cylinders were bonded to ceramic specimens using Panavia-F, RelyX Unicem or Maxcem resin cements. The shear bond strength of specimens (n=10) was tested "dry," following 24-hour water immersion or a thermocycling regime.Results: For each surface preparation, a significant reduction in bond strength following 24-hour water immersion and thermocycling compared to "dry" storage conditions was identified for both Panavia-F and Maxcem. However, Unicem specimens exhibited statistically similar SBS values for tribochemically-treated specimens stored dry following 24-hour water immersion or thermocycling (11.7 ± 1.3, 14.1 ± 6.3 and 11.7 ± 4.9 MPa, respectively) (p>0.05). No significant differences in bond strength were identified for Panavia-F or Unicem specimens for any surface preparation following the thermocycling regime (p>0.05). In contrast, for each surface preparation following thermocycling (p<0.001), Maxcem exhibited a significant decrease in SBS Conclusions: The pre-treatment of a zirconiumbased ceramic surface with grit-blasting and tribochemical treatment improves the bond strength of resin cements. Following "wet" storage conditions, Panavia-F and Unicem demonstrated superior bond strength compared with Maxcem. Differences in ceramic surface preparation and the chemistry of resin cements will affect the nature of the bonding mechanism and durability of the adhesive layer.

Effect of ultrashort pulsed laser on bond strength of Y-TZP zirconia ceramic to tooth surfaces

“…To achieve reliable adhesion to ceramics, it is typically necessary to perform surface pretreatments. Roughened ceramic surfaces allow resin cements to flow into the microretentions and create a stronger micromechanical interlock [8][9][10][11][12] .…”

Improving adhesion between luting cement and zirconia-based ceramic with an alternative surface treatment

“…16,17 The silica embedded on the ceramic surface is able to react by silane coupling, and should be more effective than conventional air abrasion. 18,19 This abrasion technique only increases the surface roughness of the zirconia, 20 increasing the bonding surface area, and removes any contaminants from the ceramic surface. 21 Notwithstanding, controversy exists regarding the efficacy any of these treatments.…”

Di̇ş Heki̇mli̇ği̇nde Si̇lan Uygulamalari

“…Rezin kompozitler ile silika kaplı restoratif materyallere silan uygulamasında karşımıza çıkan en önemli problem in-vivo ve in-vitro şartlarda zamana bağlı bağlantı gücünün azalması-dır. 51,52 Bu problemi çözmek için iki yaklaşım mevcuttur. a) Restoratif materyallere yeni yüzey uygulama yaklaşımlarının geliştirilmesi, b) Yeni silan monomerlerinin keşfedilmesi ya da iki yaklaşımın kombinasyonu.…”