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Comparing fracture resistance of CAD/CAM polyetherketoneketone ″PEKK″, carbon reinforced polyetheretherketone ″CR PEEK″ and nano-zirconia implant abutments receiving digitally milled nano-zirconia and glass ceramic crowns: an in vitro study

Crossref DOI link: https://doi.org/10.1186/s12903-026-09150-4

Published Online: 2026-08-03

Update policy: https://doi.org/10.1007/springer_crossmark_policy

Authors

Elkholy, Mohamed Atif https://orcid.org/0009-0003-9595-5220
Fansa, Hoda A. https://orcid.org/0000-0001-9324-5792
Sameh Abd El Shakour, Ahmed https://orcid.org/0009-0005-1445-7321
Hassan Hammad, Hoda Gaafar https://orcid.org/0000-0002-2375-4185
Funding

Funding for this research was provided by:

Minufiya University
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Text and Data Mining valid from 2026-08-03

Version of Record valid from 2026-08-24
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Article History

Received: 25 April 2026

Accepted: 29 June 2026

First Online: 3 August 2026

Declarations

Ethics approval and consent to participate: The study protocol was approved by the Medical research Ethical committee ″MREC″ of National Research Center ″NRC″; Federal Wide Assurance No: FWA 14747, approval for exempt review No: EX-03430426.

Consent for publication: Not applicable.

Competing interests: The authors declare no competing interests.

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