Evidence map›Paper›PMID 38243249›Full record

ArticleBMC oral health2024

Influence of occlusal reduction design on the fracture resistance and biomechanical behavior of endocrowns restoring maxillary premolars.

Mahy Hassouna Abbas, Fatma Abdallah Elerian, Abdallah Ahmed Elsherbiny, Nesma Mohamed Magdy Elgohary, Abeer Atout

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Article in BMC oral health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
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1 · What the graph read from it

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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.

2 · The registry

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3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

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4 · The record

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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

5 authors.

Mahy Hassouna AbbasFixed Prosthodontics Dept, Faculty of Dentistry, Mansoura University and Delta University for Science and Technology, Mansoura, Egypt. mahyh@mans.edu.eg.
Fatma Abdallah ElerianDepartment of Mechanical Engineering, College of Engineering, University of Bisha, P.O. Box 001, Bisha, 67714, Saudi Arabia.
Abdallah Ahmed ElsherbinyProduction Engineering and Mechanical Design Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.
Nesma Mohamed Magdy ElgoharyFixed Prosthodontics Dept, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
Abeer AtoutDepartment of prosthetic dental sciences , College of Dentistry, Jazan University, KSA and Fixed Prosthodontics Dept, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the effect of different occlusal reduction design on stress distribution and fracture resistance of different endocrown systems. MATERIAL AND

methodsSixty-four maxillary human premolars with endodontic treatment, prepared for endocrowns were divided into 2 groups (n = 32) according to the occlusal design: Butt joint preparation (B group) and Anatomical preparation (A group). Each group were subdivided into four groups according to ceramic systems: IPS E max CAD (EM group), monolithic zirconia (ZR group), Nacera Hyprid (NH group) and PEKKTON (PE group). After manufacturing of endocrowns and adhesive bonding the specimens were thermomechanically loaded and subsequently they were tested in a universal testing machine for evaluating the fracture resistance. The specimens failure mode was qualitatively assessed. The stress distribution in each group was assessed using three-dimensional finite element analysis (FEA). 1-way ANOVA and the Post Hoc Tukey HSD test were used to evaluate the data (a = .05).

resultsThe fracture resistance values between the groups showed statistically significant variations. The B PE and A PE groups had a higher ratio of fracture resistance values. Regarding failure mode, ceramic endocrowns recorded mainly irreparable failures. FEA showed that anatomical occlusal preparation have reduced the stress concentration under all endocrown systems.

conclusionEndocrowns could be used to restore endodontically treated maxillary premolars. PEKKTON endocrowns with anatomical preparations revealed most appropriate restoration. The tested new endocrown systems enhanced the biomechanical performance of the tooth. CLINICAL SIGNIFICANCE: The innovative endocrown systems (PEKK, Nacera Hyprid) can be seen as a promising choice for restoration of severely-destructed endodontic treated premolars, with less stress transmit to the residual tooth structure. Although the traditional endocrown technology might increase the longevity of tooth bonding, it shouldn't be used for clenching cases since the risk of failure is too great overall.

Indexed as

CrownsDental PorcelainBicuspidCeramicsComputer-Aided DesignDental Restoration FailureDental Stress AnalysisHumansMaterials TestingDental PorcelainCeramic materialEndocrownsEndodontically-treated teethFinite element analysis

Identifiers

PMID38243249
PMCPMC10799380

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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.