Results 21 to 30 of about 469 (162)

Liver‐Inspired Polyetherketoneketone Scaffolds Simulate Regenerative Signals and Mobilize Anti‐Inflammatory Reserves to Reprogram Macrophage Metabolism for Boosted Osteoporotic Osseointegration

Advanced Science, 2023
Tissue regeneration is regulated by morphological clues of implants in bone defect repair. Engineered morphology can boost regenerative biocascades that conquer challenges such as material bioinertness and pathological microenvironments.
Hao Gu, Yuhui Zhu, Jiawei Yang, Ruixue Jiang, Yuwei Deng, Anshuo Li, Yingjing Fang, Qianju Wu, Honghuan Tu, Haishuang Chang, Jin Wen, Xinquan Jiang   +11 more
doaj   +1 more source

A biomimetically hierarchical polyetherketoneketone scaffold for osteoporotic bone repair [PDF]

Science Advances, 2020
A biomimetic PEKK implant was developed to promote osteoporotic bone regeneration and delay adjacent bone loss.
Bo Yuan, Linnan Wang, Rui Zhao, Xi Yang, Xiao Yang, Xiangdong Zhu, Limin Liu, Kai Zhang, Yueming Song, Xingdong Zhang   +9 more
openaire   +2 more sources

Evaluation of the Bond Strength of Polyetherketoneketone to Dental Ceramic.

The journal of adhesive dentistry, 2022
To evaluate the efficacy of different surface treatments on the bond strength of polyetherketoneketone (PEKK) to ceramic materials.PEKK test specimens were separated into four groups according to surface treatments (group S: sandblasting; group A: acid etching; group SA: sandblasting + acid etching; group C: control).
Tekli, Bahar, Ergun, GÜLFEM
openaire   +3 more sources

Surface Characterization of PEKK Modified by stron-tium –hydroxyapatite coating as implant material Via the magnetron sputtering Deposition technique

Journal of Baghdad College of Dentistry, 2022
Background: The best material for dental implants is polyetherketoneketone (PEKK). However, this substance is neither osteoinductive nor osteoconductive, preventing direct bone apposition.
Ghasak H Jani, Abdalbseet A Fatalla
doaj   +1 more source

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

Bioactive 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, Shiqi Mei, Fan Wang, Jun Qian, Dong Xie, Jun Zhao, Lili Yang, Zhaoying Wu, Jie Wei   +8 more
doaj   +1 more source

Comparison of shear bond strength and color reproduction of two different high-performance polymers veneered with two different thicknesses of resin composite: an in-vitro study

Brazilian Dental Science, 2023
Objective: to evaluate the effect of material type and veneer thickness on the final color and shear bond strength of PEEK bilayered restorations.
Gehad Abdelgawad Ahmed, Amr El-Etreby, Ghada ABD El-Fattah   +2 more
doaj   +1 more source

Analysis of energy release rate of laser-induced cohesive bonding of carbon fiber-reinforced polyetherketoneketone thermoplastic composites

Polymer Testing, 2023
In this study, laser joining of carbon fiber/polyetherketoneketone composites with several patterns was investigated to achieve weight reduction without any mechanical fasteners.
Hyung Doh Roh, Insung Choi, Woo Nam Jeong, Jungwan Lee, Jung-soo Kim, Jin-Woo Yi, Moon-Kwang Um, Kwang-Hyeon Lee, Youngseok Oh   +8 more
doaj   +1 more source

A microporous surface containing Si3N4/Ta microparticles of PEKK exhibits both antibacterial and osteogenic activity for inducing cellular response and improving osseointegration

Bioactive Materials, 2021
As an implantable biomaterial, polyetherketoneketone (PEKK) exhibits good mechanical strength but it is biologically inert while tantalum (Ta) possesses outstanding osteogenic bioactivity but has a high density and elastic modulus. Also, silicon nitride (
Xinglong Hu, Shiqi Mei, Fan Wang, Songchao Tang, Dong Xie, Chao Ding, Wenli Du, Jun Zhao, Lili Yang, Zhaoying Wu, Jie Wei   +10 more
doaj   +1 more source

Double‐Crown Prosthesis Retention Using Polyetherketoneketone (PEKK): An In Vitro Study

Journal of Prosthodontics, 2022
AbstractPurposeTo assess the retentive force of telescopic crowns using polyetherketoneketone (PEKK) high‐performance polymer in relation to conventional materials over a long period of time in an in vitro setting.Materials and MethodsThirty‐six sets of primary and secondary crowns were fabricated as per the double crown‐retained prostheses approach ...
Igarashi, Kensuke, Katagiri, Hiroki, Abou-Ayash, Samir, Schimmel, Martin, Afrashtehfar, Kelvin I   +4 more
openaire   +5 more sources

Coalescence in fused filament fabrication process: Thermo-dependent characterization of high-performance polymer properties

Polymer Testing, 2021
One of the major drawbacks of the thermoplastic Fused Filament Fabrication process (FFF) is the poor mechanical properties of the parts produced. This is mostly related to the macroporosities resulting from a limited coalescence between filaments ...
Arthur Lepoivre, Arthur Levy, Nicolas Boyard, Vincent Gaudefroy, Vincent Sobotka   +4 more
doaj   +1 more source