Results 21 to 30 of about 3,071 (184)

Polyetherketoneketone (PEKK): An emerging biomaterial for oral implants and dental prostheses

open access: yesJournal of Advanced Research, 2021
Background: The polyetherketoneketone (PEKK) and polyetheretherketone (PEEK) are the two most well-known of the polyaryletherketone (PAEK) family. PEKK is a new evolving polymeric material.
Hatim Alqurashi   +5 more
doaj   +1 more source

New synthetic PEKK/bioceramic hybrids and their surface sulfonation counterparts have increased cellular osteogenic capacity and promoted osseointegration

open access: yesMaterials & Design, 2022
PEKK has good biocompatibility as an implantable material, but its mechanical properties and osseointegration are not satisfied enough. Aluminum oxide (Al2O3) is highly wear-resistant, while hydroxyapatite (HA) is a biologically active.
Pengzhen Gu   +12 more
doaj   +1 more source

Parametric Study of PEKK Based Fiber Metal Laminates Used in Aerospace Applications [PDF]

open access: yesEngineering and Technology Journal, 2023
Numerical analyses offer a cost-effective and efficient alternative to experimental investigations, and Finite Element (FE) models have become a popular tool to simulate the behavior of Fiber metal laminates (FMLs) under impact loads. This study verified
Nassier Nassir, R. Birch, A. Haldar
doaj   +1 more source

Implantable PEKK/tantalum microparticles composite with improved surface performances for regulating cell behaviors, promoting bone formation and osseointegration

open access: yesBioactive Materials, 2021
Polyetherketoneketone (PEKK) exhibits admirable biocompatibility and mechanical performances but bioinert while tantalum (Ta) possesses excellent osteogenesis and osseointegration but high elastic modulus and density, and processing is too difficult and ...
Xinglong Hu   +8 more
doaj   +1 more source

High Porosity Poly(ether ketone ketone): Influence of Solvents on Foam Properties

open access: yesMacromolecular Materials and Engineering, 2023
Poly(ether ketone ketone) (PEKK) is a semicrystalline high‐performance polymer with exceptional mechanical properties, high continuous operation temperature, and is insoluble in most common solvents.
Dmitrii Rusakov   +2 more
doaj   +1 more source

Reliability of Polyetherketoneketone as Definitive Implant-Supported Bridges in the Posterior Region—An In Vitro Study of the Ultimate Fracture Load and Vertical Marginal Discrepancy after Artificial Aging

open access: yesApplied Sciences, 2022
Purpose: This study aims to investigate the ultimate fractural strength and marginal integrity of a three-unit implant-supported fixed partial denture (FPD) framework fabricated of polyetherketoneketone (PEKK) after simulated five-year clinical aging ...
Surakit Visuttiwattanakorn   +3 more
doaj   +1 more source

Preparation and Characterization of a Polyetherketoneketone/Hydroxyapatite Hybrid for Dental Applications

open access: yesJournal of Functional Biomaterials, 2022
Here, we developed a new synthetic method for the production of a new class of polymeric inorganic hybrid biomaterial that has potential for dental implant applications and, in general, other orthopedic applications owing to its excellent mechanical ...
Wenhsuan Lu   +7 more
doaj   +1 more source

Inflammatory response to implantation of transparent nanocrystalline yttria-stabilized zirconia using a dorsal window chamber model. [PDF]

open access: yes, 2016
The long-range goal of the windows to the brain (WttB) is to improve patient care by providing a technique for delivery and/or collection of light into/from the brain, on demand, over large areas, and on a chronically-recurring basis without the need for
Aguilar, Guillermo   +4 more
core   +1 more source

Direct iminization of PEEK [PDF]

open access: yes, 2011
Semi-crystalline poly(ether ketone)s are important high-temperature engineering thermoplastics, but are difficult to characterize at the molecular level because of their insolubility in conventional organic solvents.
Attwood T. E.   +17 more
core   +1 more source

Permutation graphs, fast forward permutations, and sampling the cycle structure of a permutation [PDF]

open access: yes, 2003
A permutation P on {1,..,N} is a_fast_forward_permutation_ if for each m the computational complexity of evaluating P^m(x)$ is small independently of m and x. Naor and Reingold constructed fast forward pseudorandom cycluses and involutions.
Boaz Tsaban, Naor, Schneier, Shepp
core   +2 more sources

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