Bonding Behavior Between Polyetheretherketone and Polymethylmethacrylate Acrylic Denture Polymer

Mayinger, Felicitas; Fiebig, Maximilian; Roos, Malgorzata; Eichberger, Marlis; Lümkemann, Nina und Stawarczyk, Bogna (2021): Bonding Behavior Between Polyetheretherketone and Polymethylmethacrylate Acrylic Denture Polymer. In: Journal of Adhesive Dentistry, Bd. 23, Nr. 2: S. 145-158

Abstract

Purpose: To investigate the impact of pretreatment and conditioning on shear bond strength (SBS), surface free energy (SFE) and surface roughness (SR) between polyetheretherketone (PEEK) and cold-cured polymethylmethacry-late (PMMA). Materials and Methods: PEEK substrates (Dentokeep PEEK Disc, nt-trading) were air abraded with Al2O3 particles of different grain sizes applied with varying pressure at 1) 0.2 MPa - 50 mu m Al2O3;2) 0.4 MPa - 50 mu m Al2O3;3) 0.2 MPa - 110 mu m Al2O3;4) 0.4 MPa - 110 mu m Al2O3;or 5) without air abrasion (n = 172/group). Surface properties were quantified using SFE and SR (n = 10/group), and scanning electron microscope imaging (n = 2/group). Substrates were conditioned with a) Visio.link (VL, Bredent);b) Scotchbond Universal (SU, 3M Oral Care);c) Bonding Fluid (BF, Schutz Dental);or d) without conditioning (WC;n = 40/ subgroup) and bonded to the polymer (Futura Jet, Schutz Dental). SBS and fracture types were determined before and after 10,000 thermal cycles (n = 20/subgroup). Univariate ANOVA, Kruskal-Wallis test, Mann-Whitney U-test, Kaplan-Meier survival estimates, and Weibull distribution were computed (p < 0.05). Ciba-Geigy tables and the chi-squared test were used to analyze fracture type distributions. Results: An increase in particle size and pressure resulted in similar or increased SBS, Weibull characteristic strength, and Weibull moduli (p < 0.001 - 0.046). The lowest results were observed for the control group (without air abrasion), while pretreatment with 0.4 MPa - 110 mu m Al2O3 presented the highest values (p < 0.001). In comparison with the other conditioning procedures, VL showed high (p < 0.001 - 0.03), and SU and WC low SBS (p < 0.001 - 0.006). Although it did not influence SFE, an increase in particle size and pressure led to an increased SR (p < 0.001). Conclusion: Pretreatment with 0.4 MPa - 110 mu m Al2O3 can be recommended to increase bonding properties between PEEK and PMMA. Application of adhesives such as VL can enhance SBS further.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Medizin
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• ISSN: 1461-5185
• Sprache: Englisch