Evidence map›Paper›PMID 40617236›Full record

ArticleEuropean journal of dentistry2026

Evaluating the Influence of Ferrule Preparation on Zirconia Endocrown Efficacy in Primary Molars: A 3D Finite Element Analysis.

Ali Sayed Ali Bayiumy, Mohamed AboElkasme Wakwak, Salem Abdel Hakim Salem, Mohammed Said AbdAllah AbuSamadah, Mahmoud El-Said Ahmed Abd El-Aziz, Yasser R Souror

Abstract read
In one paragraph

Article in European journal of dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Ali Sayed Ali BayiumyDepartment of Dental Biomaterials, Faculty of Dentistry, Assiut University, Assiut Governorate, Egypt.ORCID 0000-0002-3245-4993
Mohamed AboElkasme WakwakDepartment of Pediatric Dentistry, Faculty of Dentistry, Al-azhar University, Assiut, Egypt.ORCID 0000-0002-2503-7649
Salem Abdel Hakim SalemDepartment of Pediatric Dentistry, Faculty of Dentistry Al-Azhar University, Cairo, Egypt.
Mohammed Said AbdAllah AbuSamadahDepartment of Pediatric Dentistry, Faculty of Dentistry, Al-azhar University, Assiut, Egypt.
Mahmoud El-Said Ahmed Abd El-AzizDepartment of Dental Biomaterials, Faculty of Dental Medicine, Al-Azhar University, Assiut, Egypt.ORCID 0000-0001-5818-4971
Yasser R SourorDepartment of Pediatric Dentistry, Faculty of Dental Medicine, Misr University for Science and Technology, Cairo, Egypt.ORCID 0000-0002-1219-0089

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: This article assesses the effect of different ferrule preparations on the stress distribution in the primary second molar restored with zirconia crown. Materials and Methods: Four finite element models were created to simulate different ferrule heights: M1 (0 mm), M2 (1 mm), M3 (1.5 mm), and M4 (2 mm). A lower primary second molar was scanned to create a solid model, which was imported into finite element analysis software. Simulations included varying ferrule heights, material properties, and meshing. Models were subjected to 330 N occlusal loads at vertical, oblique, and lateral angles. Results: The analysis revealed that stress within the endocrown body increased with greater ferrule height under vertical loading. Conversely, stress levels decreased with increased ferrule height under oblique and lateral loads. Under vertical load, peak stresses were recorded as follows: endocrown body (219.5 MPa for M1), cement layer (11.7 MPa for M1 and M4), remaining tooth (36 MPa for M1), cortical bone (59.7 MPa for M1), and cancellous bone (8.7 MPa for M1 and M4). Under oblique load, stress values increased as follows: cement layer (62.9 MPa for M4), remaining tooth (59 MPa for M1), and endocrown body (203 MPa for M1). Under lateral load, stress values increased as follows: endocrown body (321 MPa for M1), cement layer (100 MPa for M4), remaining tooth (94 MPa for M1), cortical bone (154 MPa for M1), and cancellous bone (15 MPa for M1). Conclusion: Ferrule height significantly influences stress distribution in the tooth structure and supporting bone. Higher ferrule heights enhance structural stability by reducing stress on underlying components.

Identifiers

PMID40617236
PMCPMC13160609

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.