ArticleOdontology2025
Mode of failure and finite element analysis of custom-made PEEK post-core (milled and pressed).
Article in Odontology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Push-out bond strength of CAD/CAM-fabricated modified PEEK dental posts.BMC oral health · 2026Article
- AI-powered finite element analysis for predicting fracture patterns in endodontically treated teeth restored with posts.Bioinformation · 2025Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To compare experimentally the failure modes of endodontically treated teeth restored with custom-made polyetheretherketone (PEEK) post-core (milled and pressed) to those restored with the standard technique of customized fiberglass posts with composite cores, and to analyze numerically stress distribution patterns in each system using the finite element analysis (FEA). Experimentally, 21 mandibular premolars were endodontically treated, prepared for post-restoration, mounted in resin mold, decapitated, and assigned to three groups: M (milled PEEK), P (pressed PEEK), and C (control group; ready-made fiberglass posts customized with resin composite). All post-core restorations were cemented and subjected to thermocycling. Failure modes were visually evaluated after fracture by means of a universal testing machine. Numerically, stress analysis was assessed using FEA, based on digital models designed to replicate the experimental setup. Milled PEEK posts showed a uniformly favorable failure mode across all specimens (100%), whereas pressed PEEK and customized fiberglass posts displayed more variable failure modes, yet with a higher proportion of favorable outcomes. Numerically, the highest VME stress values were in the cervical half of the post area (up to 62.7 MPa), with minimal differences between milled and pressed PEEK posts. PEEK posts had greater stress concentrations in the cervical area of the post area, while fiberglass posts showed slightly higher stress in the middle and apical areas. Custom-made milled and pressed PEEK posts are effective for restoring endodontically treated teeth, with milled PEEK posts showing the most favorable failure mode and stress distribution pattern.
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Registered trials
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