Results 31 to 40 of about 1,024 (182)

Comparative Stress Analysis of Polyetherketoneketone (PEKK) Telescopic Crowns Supported by Different Primary Crown Materials

open access: yesApplied Sciences, 2022
The present study aimed to investigate the stress distribution of secondary telescopic crowns made of polyetherketoneketone (PEKK) combined with different primary crown (PC) materials (Zirconia, CoCr, Titanium, and PEKK) using finite element analysis ...
João Paulo Mendes Tribst   +6 more
doaj   +1 more source

Metal-Free Alternative “Revolutionary PEKK”: An Emerging Material for Removable and Fixed Prosthesis Usage in Dentistry: A Critical Review [PDF]

open access: yes, 2023
Polyaryletherketone polymers have been widely used for biomaterials in orthopaedic, trauma, and spinal implants. Polyaryletherketone has three different variants viz: Polyetheretherketone (PEEK), Polyetherketoneketone (PEKK) and Polyetherketone (PEK). In
K, Pandurangan Kiran   +3 more
core   +2 more sources

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

open access: yesJournal 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

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

Fracture Resistance of Zirconia Oral Implants In Vitro: A Systematic Review and Meta-Analysis [PDF]

open access: yes, 2020
Various protocols are available to preclinically assess the fracture resistance of zirconia oral implants. The objective of the present review was to determine the impact of different treatments (dynamic loading, hydrothermal aging) and implant features (
Bethke, Annalena   +6 more
core   +1 more source

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

open access: yesJournal 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   +4 more
openaire   +6 more sources

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

open access: yesBrazilian 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   +2 more
doaj   +1 more source

Evaluation of the Bond Strength of Polyetherketoneketone to Dental Ceramic.

open access: yesThe 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

New generation CAD-CAM materials for implant-supported definitive frameworks fabricated by using subtractive technologies [PDF]

open access: yes, 2022
Innovations in digital manufacturing enabled the fabrication of implant-supported fixed dental prostheses (ISFDPs) in a wide variety of recently introduced materials.
Cevik, Pinar   +2 more
core   +2 more sources

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

open access: yesPolymer 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   +8 more
doaj   +1 more source

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