Results 11 to 20 of about 25,706 (168)

Strategies to improve bioactive and antibacterial properties of polyetheretherketone (PEEK) for use as orthopedic implants

open access: yesMaterials Today Bio, 2022
Polyetheretherketone (PEEK) has gradually become the mainstream material for preparing orthopedic implants due to its similar elastic modulus to human bone, high strength, excellent wear resistance, radiolucency, and biocompatibility.
Zhi Zheng   +8 more
doaj   +1 more source

Bimetallic ions regulated PEEK of bone implantation for antibacterial and osteogenic activities

open access: yesMaterials Today Advances, 2021
After the surgical implantation of polyetheretherketone (PEEK) orthopedic biomaterials, there are two major clinical challenges, implantation-related pathogen infection and poor osseointegration-caused aseptic loosening, threaten the lifespan and the ...
Lei Wang   +8 more
doaj   +1 more source

Biocompatibility and osteoinductive ability of casein phosphopeptide modified polyetheretherketone

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Polyetheretherketone (PEEK) is a potential implant material for dental application due to its excellent mechanical properties. However, its biological inertness and poor osteoinductive ability limited its clinical application.
Peng Qiu   +17 more
doaj   +1 more source

A Peek Outside Our Universe [PDF]

open access: yesSymmetry, 2022
According to general relativity (GR), a universe with a cosmological constant Λ, like ours, is trapped inside an event horizon, r<3/Λ. What is outside? We show, using Israel (1967) junction conditions, that there could be a different universe outside. Our universe looks like a black hole for an outside observer. Outgoing radial null geodesics cannot
Enrique Gaztañaga, Pablo Fosalba
openaire   +2 more sources

Peek arc consistency

open access: yesTheoretical Computer Science, 2010
This paper studies peek arc consistency, a reasoning technique that extends the well-known arc consistency technique for constraint satisfaction. In contrast to other more costly extensions of arc consistency that have been studied in the literature, peek arc consistency requires only linear space and quadratic time and can be parallelized in a ...
Manuel Bodirsky, Hubie Chen
openaire   +2 more sources

Clinical efficiency of a new allograft cervical cage in treatment of cervical spondylosis

open access: yesDi-san junyi daxue xuebao, 2019
Objective To evaluate the efficacy and reliability of a novel allograft cervical cage in treatment of cervical spondylosis, and observe the effect of subsidence on clinical outcome.
FANG Qing, LI Yang, WU Wenjie, LIU Xun
doaj   +1 more source

DENTAL IMPLANT MATERIAL (POLYETHERETHERKETONE, TITANIUM AND ITS ALLOYS, ZIRCONIA) [PDF]

open access: yesSTED Journal, 2022
The goal of this article is to inform the reader of three distinct types of biomedical materials applied in the production of dental implants, focusing on characteristics and categorizations of biomaterials based on: titanium (Ti + its alloys ...
Zuzana Mitaľová   +4 more
doaj   +1 more source

An In-vitro evaluation of retention force of All PEEK, all zirconia and zirconia–PEEK telescopic attachment for mandibular overdentures

open access: yesJournal of Pharmacy and Bioallied Sciences, 2023
The objective of this study is to compare retention capacity of mandibular implant-supported overdenture with all zirconia, zirconia–PEEK, and all PEEK telescopic attachments. Sixty acrylic resin models of mandible were used. Telescopic attachment system
Gujjalapudi Mahalakshmi   +6 more
doaj   +1 more source

In vitro physicochemical and biological properties of titanium alloy, zirconia, polyetheretherketone, and carbon fiber-reinforced polyetheretherketone

open access: yesFrontiers in Materials, 2022
Implant repair is a common means to restore the normal function of the hard tissues (bone or teeth). At present, the commonly and potentially used implant materials include titanium alloy (Ti), zirconia (Zr), polyetheretherketone (PEEK), and 30% carbon ...
Jingjing Su   +10 more
doaj   +1 more source

Surface Chemistry for Improvement in Load-Carrying Capacity of Poly(Ether-Ether-Ketone)-Based Materials by Poly(Tetrafluoroethylene)

open access: yesTribology Online, 2008
The tribological properties of poly(ether-ether-ketone) (PEEK) against steel was evaluated by a ring-on-flat type tribo-test under rotating motion. Addition of poly(tetrafluoroethlene) (PTFE) as solid lubricants improved the load-carrying capacity of the
Ichiro Minami   +5 more
doaj   +1 more source

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