Surface Characteristics and Adhesion of Veneering Composite Resin to PAEK‐Based Substructure Restorative Materials. Issue 2 (12th April 2022)

• Record Type: Journal Article
• Authors: Alsadon, Omar; Moorehead, Robert; Almansour, Haitham; Bangalore, Durgesh; Alageel, Omar; Wood, Duncan
• Is Part Of: Journal of prosthodontics. Volume 32:Issue 2(2023)
• Page Start: 147
• Page End: 153
• Publication Date: 2022-04-12
• Subjects: adhesion strength -- PEEK -- PEKK -- polyetherketoneketone -- polyetheretherketone -- zirconia; Prosthodontics -- Periodicals; Dental implants -- Periodicals; Dentistry -- Periodicals; 617.69
• DOI: 10.1111/jopr.13511
• Languages: English
• ISSNs: 1059-941X

Abstract

Abstract: Purpose: To evaluate and compare the shear bond strength (SBS) of composite veneering material to polyetherketoneketone (PEKK), polyetheretherketone (PEEK), zirconia (YZ), and nickel‐chromium alloy (NiCr) substructure restorative materials. Materials and methods: Forty samples (12 × 2 mm) were prepared from four materials: PEKK, PEEK, zirconia, and NiCr alloy (n = 10). The Vickers hardness was evaluated before preparing the surface for bonding by shot‐blasting using 110 μm Al2 O3 particles. The surface roughness (Ra) of each sample was determined using a noncontact optical profilometer. The veneering resin was bonded onto each sample following primer application. The prepared samples were then subjected to an SBS test using a universal testing machine at 0.5 mm/min crosshead speed. Failure modes and surface topography following debonding were assessed. The data were statistically analyzed using ANOVA and Tukey's post‐hoc comparison test ( p < 0.05). Results: The highest and lowest mean surface roughness was observed in PEEK (3.45 ±0.13 μm) and NiCr (1.87 ±0.07 μm) materials, respectively. A significant difference in roughness values was observed between the materials except for NiCr and YZ ( p = 0.547). Concerning SBS, PEEK and NiCr exhibited the highest (16.23 ±0.96 MPa) and lowest (10.1 ±0.63 MPa) values. The mean difference in SBS indicated a statistically significant difference between the material groups ( p < 0.01). Conclusions: PEKK materials demonstrated significantly lower SBS than PEEK and significantly higher SBS values than conventional zirconia and alloy materials. A positive and significant correlation between mean roughness and SBS was observed, but the causality could be either intrinsic to the material or the roughness.