Comparison of the bond strength of composite resin to zirconia and composite resin to polyether ether ketone: An in vitro study

Abstract

A BSTRACT Aim: The aim of the study was to compare the shear bond strength of composite resin bonded to polyether ether ketone (PEEK) and zirconia, and also to evaluate the effect of thermocycling on the shear bond strength. Materials and Methods: A total of 22 zirconia (Group 1) and 22 PEEK (Group 2) specimens (disks of 10 mm in diameter and 10 mm in thickness) were machine milled using computer-aided design (CAD)/computer-aided manufacturing (CAM) from commercially available zirconia and PEEK. These specimens were air abraded with 110-μm aluminum oxide. Following which these two groups were subdivided into four groups, that is, Group 1A: 11 zirconia specimens before thermocycling, Group 1B: 11 zirconia specimens after thermocycling, Group 2A: 11 PEEK specimens before thermocycling, and Group 2B: 11 PEEK specimens after thermocycling. These four groups of specimens were embedded in an acrylic block, and bonding agent was applied over the upper surfaces of the disks of each of these specimens. Composite resin was then cured, and then Group 1B and group 2B were thermocycled under a standard temperature. The bond strength of the specimen was tested using universal testing machine. Result: The result showed that there was no significant difference in shear bond strength between the groups, although higher shear bond strength was observed in the PEEK group. Conclusion: Shear bond strength of PEEK is similar to zirconia. The results suggest that the pretreatment method and primers used were effective in improving the bonding of resin cements to zirconia ceramic and the bonding properties of the veneering resin to the PEEK surface.

Applications and Clinical Behavior of BioHPP in Prosthetic Dentistry: A Short Review

“…2020 [27] The shear bond strength of PEEK is similar to that of zirconia. As an alternative to metal, BioHPP can thus be recommended as a framework to be veneered with composite resin.…”

“…The main PEEK characteristics are due to its low elastic modulus, similar to that of bone, its low hardness, which will not cause an abrasion of the opposing tooth, which does occur in the case of ceramic [26]. Rasheed et al state that the shear bond strength of PEEK is similar to that of zirconia, showing the advantage that with the right surface treatments it is also the best adhesive solution [12,27]. Furthermore, the PEEK crowns showed minimal abrasion, better stress modulation through plastic deformation, and good color stability, which makes it a promising alternative to zirconia for fabrication of the crown [28][29][30][31].…”

Determination of Shear Bond Strength between PEEK Composites and Veneering Composites for the Production of Dental Restorations

“…The hydrophobic surface of PEEK has to be pretreated before veneering to increase its hydrophilicity, which is necessary for achieving an adequate bond strength with the veneering composite. One of the most efficient methods of surface pretreatment, in addition to etching with sulfuric acid, according to the literature, is sandblasting with aluminium oxide (Al 2 O 3 ) and the use of adhesives based on methyl methacrylate (MMA) and dimethacrylates (DMA) [3,5,8,9,12,17,18,23,24,[26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42].…”

“…Different veneering composites have been applied: Crea.lign, SR Nexco and different cements. Some authors measured the surface roughness after different surface pretreatments [8,9,28,30,34,41,43,44].…”

Effect of coping materials zirconia or polyetheretherketone with different techniques of fabrication on vertical marginal gap and fracture resistance of posterior crowns with composite veneering

“…Veneering of a zirconia framework results in even more esthetically acceptable restorations [ 10 ]. However, covering the zirconia core with porcelain veneering exposes the restoration to chipping or lamination of the veneer layer as one of the most frequent problems with zirconia restorations [ 11 ].…”