Impact of air-abrasion pressure and adhesive systems on bonding parameters for polyetheretherketone dental restorations

Luemkemann, Nina; Strickstrock, Monika; Eichberger, Marlis; Zylla, Isabella-Maria und Stawarczyk, Bogna (2018): Impact of air-abrasion pressure and adhesive systems on bonding parameters for polyetheretherketone dental restorations. In: International Journal of Adhesion and Adhesives, Bd. 80: S. 30-38

Abstract

Objectives: To investigate the impact of polyetheretherketone (PEEK) surface modification on tensile bond strength (TBS), acidity parameters (D) and surface properties. Methods: For TBS, 486 PEEK specimens were fabricated and air-particle abraded with 50 pm Al2O3 according to varying pressure: 0.05, 0.2 or 0.4 MPa. Specimens were directly conditioned (n = 18/group): 1. Scotchbond Universal (SBU);2. Clearfil Universal Bond (CUB);3. Futurabond U (FBU), 4. Adhese Universal (AU), 5. G-Premio Bond (GPB), 6. Pekk Bond (PB), 7. visio.link (PCG/positive-control-group), 8. without conditioning (NCG/negative-control-group) and luted with Clearfil SA Cement. After thermal cycling (5,000x) TBS was measured. On air-particle abraded PEEK surfaces and different adhesive systems (n = 6/pretreatment) D was analysed by contact angle measurement, surface roughness tactile by profilometer and optical by SEM with 3D-images followed by surface topography, EDX- and XRD-analysis. Data was analysed using 2-/1-way ANOVA, Kruskal-Wallis H-, Mann-Whitney-U-, Kaplan-Meyer-, Chi(2)- and Spearman-Rho-test. Results: PCG followed by SBU and AU showed the highest TBS and survival rates. PB air-particle abraded with 0.4 MPa presented comparable TBS with PCG. NCG and GPB showed lowest TBS. Specimens air-particle abraded with 0.05 MPa presented lower D-values than those with 0.2 or 0.4 MPa. PCG followed by PB showed higher D values compared to SBU, CUB, FBU, AU and GPB. All air-particle abraded specimens showed embedded Al2O3 particles and for 0.2 and 0.4 MPa more roughened surface areas. Significance: The pressure during air-particle abrasion of PEEK restorations must be matched to the adhesive system. A general recommendation is not possible. Universal adhesives might be an alternative conditioning for cementation of PEEK compared to PCG.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Medizin
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• ISSN: 0143-7496
• Sprache: Englisch