ArticleBMC oral health2023
Impact of different CAD/CAM materials on internal and marginal adaptations and fracture resistance of endocrown restorations with: 3D finite element analysis.
Article in BMC oral health, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
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Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.
- Marginal Gap of Pre-Cemented Endocrowns: A Systematic Review of Measurement Methods and the Influence of Fabrication Method and Crown Material.Clinical and experimental dental research · 2025Pooled it
- Fracture Strength of CAD/CAM Endocrown and Post-Core Restorations with Fiber Strip Reinforcement in Mandibular Premolars.Journal of functional biomaterials · 2026Article
- Marginal adaptation and fracture resistance of recent 3D printed high-performance polymer and CAD/CAM hybrid ceramic endocrown restorations and designs.BMC oral health · 2026Article
- The impact of preparation dimensions and material choice on stress distribution in MOD inlays: a 3D finite element study.BMC oral health · 2026Article
- Impact of Thermomechanical Aging on Marginal Fit and Fracture Resistance of CAD/CAM Endocrowns Fabricated from Different Materials.Polymers · 2026Article
- Influence of different customized abutment materials on stress distribution of different internal implant-abutment connections: finite element analysis.BMC oral health · 2025Article
- Influence of Cusp Coverage Design and Hybrid Resin-Ceramic Materials on the Biomechanical Performance of Partial Coverage Restorations.Journal of functional biomaterials · 2025Article
- Comparison of the Internal and Marginal Adaptation of Implant-Supported Restorations on Titanium Base Using Various Materials: An In Vitro Study.Materials (Basel, Switzerland) · 2025Article
- Effect of conventional and digital fabrication techniques on marginal and internal fit of lithium disilicate endocrowns.BMC oral health · 2025Article
- Fracture resistance of direct versus CAD-CAM PMMA provisional restorations: AnBioinformation · 2025Article
- Finite element analysis (FEA) of the stress behavior of some dental materials.Journal of medicine and life · 2025Article
- Fracture strength and marginal and internal adaptation of lithium disilicate and hybrid ceramic endocrowns and non-retentive overlays for endodontically treated molar teeth.BMC oral health · 2024Article
- Influence of various fabrication techniques and porcelain firing on the accuracy of metal-ceramic crowns.BMC oral health · 2024Article
- Influence of occlusal reduction design on the fracture resistance and biomechanical behavior of endocrowns restoring maxillary premolars.BMC oral health · 2024Article
- Marginal fit, internal adaptation, and thermocycling effects on the mechanical and optical properties of graphene CAD-CAM and zirconia crowns for primary molars: An in-vitro study.Journal of oral biology and craniofacial researchArticle
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo assess and compare the impact of various computers aided design/manufacturing (CAD/CAM) materials on internal and marginal discrepancies, fracture resistance and failure probability of Endocrown restorations with 3D Finite Element analysis. MATERIAL AND
methodsForty devitalized human maxillary first molars were collected. After endodontic treatment, they classified into 4 groups (n = 10) based on the materials used for endocrown fabrication. Group V (Vita-Enamic), Group N (Nacera Hybrid), Group T (Translucent Prettau Zirconia) and Group P (Pekkton ivory). All samples were exposed to artificial aging method simulating one year of clinical service. Silicone replica technique and stereomicroscope (25X) utilized to evaluate the marginal and internal gaps of endocrowns at different areas. Fracture resistance test used for cemented specimens followed by qualitative investigation utilizing Stereomicroscopy. Four models representing four endocrown systems used for restoration of severely-damaged endodontically treated upper first molar were generated for finite element analysis (FEA). Axially and centrally static occlusal compressive load was applied. Modified Von Mises and maximum principal stress values on the remaining tooth structure, cement lines and restorative materials were assessed independently. Resulted data were statistically analyzed at P-value ≤ 0.05.
resultsIn the current study, the highest mean values of internal and marginal discrepancies (μm) among studied groups were reported for Zirconia group (100.300 and 102.650) respectively, while the lowest mean value of internal discrepancy (μm) was observed for Nacera group (69.275) and the lowest mean value of marginal discrepancy (μm) was observed for PEKK group (78.4750). Regarding internal discrepancy, Vita-Enamic and PEKK groups did not exhibit any statistically significant differences (P = 0.293), however zirconia and the other tested groups exhibited statistically significant differences in the mean values of the marginal gap region (p 0.05).On the other hand, PEKK group showed the highest mean value of fracture resistance (1845.20 N) and the lowest value was observed for Vita-Enamic group (946.50 N). Regarding to stress distributions through 3D FEA, and according to modified von Mises (mvM) analysis, the greatest possible stress values were noticed in PEKK model in relation to tooth structure, cement line, and flowable composite as the following: (93.1, 64.5, 58.4 MPa) respectively, while Zirconia revealed lower maximum stress values (11.4, 13.6, 11.6 MPa) respectively.
conclusionsStatistically excellent marginal and internal fit was observed for PEKK in relation to other used endocrown materials. Also, PEKK material explained fracture resistance comparable to zirconia value while the lowest value was detected for Vita Enamic material.
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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.