Results 151 to 160 of about 1,062 (193)
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Hydroxyapatite whisker-reinforced polyetherketoneketone bone ingrowth scaffolds
Acta Biomaterialia, 2010Hydroxyapatite (HA) whisker-reinforced polyetherketoneketone (PEKK) bone ingrowth scaffolds were prepared and characterized. High levels of porosity (75-90%) and HA whisker reinforcement (0-40 vol.%) were attained using a powder processing approach to mix the HA whiskers, PEKK powder and a NaCl porogen, followed by compression molding at 350-375 ...
Gabriel L Converse, Ryan K Roeder
exaly +3 more sources
New adhesive protocol improves shear bond strength of Polyetherketoneketone (PEKK)
Dental MaterialsInert surface of Polyetherketoneketone (PEKK) jeopardizes resin bonding. This study aimed to present a new adhesive protocol to improve PEKK bonding.A total of 360 PEKK blocks were milled, polished (maximum roughness of 0.20 µm), and randomly assigned to groups. The new protocol was applied (n = 36) and compared to conventional treatments (no treatment;
Kusai Baroudi +2 more
exaly +3 more sources
Strength and flexibility of lithium disilicate bonded to polyetherketoneketone
The Journal of Prosthetic Dentistry, 2023Polyetherketoneketone (PEKK) is a high-performance polymer gaining popularity in dentistry for the fabrication of crowns, fixed partial dentures, removable partial denture frameworks, and frameworks for implant-supported fixed complete dentures. Despite a lack of performance data, lithium disilicate crowns have been bonded to retentive elements in PEKK
Michelle K. Ruse +3 more
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Mica filled polyetherketoneketones for material extrusion 3D printing
Additive Manufacturing, 2022ABSTRACT Polyetherketoneketone (PEKK) has superior physical properties to most available thermoplastics compatible with material extrusion-based 3D printing. The performance of fused filament fabrication (FFF) compatible PEKK has been detailed primarily as a function of varying the isomer ratios composing the co-polymer structure.
Zachary C. Kennedy +10 more
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Enhanced Antibacterial Ability and Bioactivity of Polyetherketoneketone Modified with LL-37
Langmuir, 2022Polyetherketoneketone (PEKK) is considered to be a potential substitute material for metal bone implants because of its advantageous biocompatibility, chemical stability, and mechanical properties, but clinical application has been severely restricted due to PEKK's lack of antibacterial ability and biological activity.
Yabing Jin +5 more
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Taguchi optimization of 3D printed short carbon fiber polyetherketoneketone (CFR PEKK)
Journal of the Mechanical Behavior of Biomedical Materials, 2023In this study, the Taguchi method was utilized to optimize fused filament fabrication (FFF) additive manufacturing with the goal of maximizing the flexural strength of 3D printed polyaryletherketone specimens. We analyzed 3D printed (3DP) carbon fiber reinforced poly-etherketoneketone (CFR PEKK), 3D printed and pressed (3DP + P) CFR PEKK, and injection
Aliza Rabinowitz +4 more
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Mechanical properties of hydroxyapatite whisker reinforced polyetherketoneketone composite scaffolds
Journal of the Mechanical Behavior of Biomedical Materials, 2009The apparent mechanical properties of hydroxyapatite (HA) whisker reinforced polyetherketoneketone (PEKK) scaffolds were evaluated in unconfined, uniaxial compression to investigate the effects of the porosity (75%, 82.5% and 90%), HA content (0, 20 and 40 vol%) and mold temperature (350, 365 and 375 ( composite function)C). Increased porosity resulted
Gabriel L, Converse +2 more
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Preheat Compression Molding for Polyetherketoneketone: Effect of Molecular Mobility
Chinese Journal of Polymer Science, 2021Polyetherketoneketone (PEKK) is a new evolving polymeric material, and is considered as another important member of the polyaryletherketone (PAEK) family in addition to polyetheretherketone (PEEK). Hot compression molding can be used to compact and consolidate the PEKK products, where the temperature and pressure play key roles to affect the molecular ...
Xiao-Hua Zhang +8 more
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Preparation and properties of bisphenol A polyetherketoneketone based phthalonitrile resins
Journal of Applied Polymer Science, 2023AbstractA promising high temperature phthalonitrile (PN) resin composed of a polyetherketoneketone (PEKK) core bridged by two bisphenol A linkers and end capped with PN groups is presented. This PEKK‐PN resin was characterized via differential scanning calorimetry, thermogravimetric analysis, proton nuclear magnetic resonance spectroscopy, scanning ...
Loren C. Brown +4 more
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Wear of polyetherketoneketones — Influence of titanium dioxide content and antagonistic material
Dental Materials, 2018The aim of this laboratory study was to analyze the influence of titanium dioxide (TiO2) content and antagonistic material on the wear of polyetherketoneketones (PEKKs).Twenty-four disk-shaped specimens of two PEKK materials containing either 10wt% or 20wt% TiO2 particles (P10 and P20) were dynamically loaded in a chewing simulator with 49N and ...
Thomas, Kewekordes +2 more
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