ArticleDental materials : official publication of the Academy of Dental Materials2024
Effect of elastic gradients on the fracture resistance of tri-layer restorative systems.
Article in Dental materials : official publication of the Academy of Dental Materials, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Effect of different onlay materials and resin core thickness on stress distribution in partial coverage restorations: a 3D finite element study.Clinical oral investigations · 2026Article
- Fracture Strength of CAD/CAM Endocrown and Post-Core Restorations with Fiber Strip Reinforcement in Mandibular Premolars.Journal of functional biomaterials · 2026Article
- Hybrid TiONature communications · 2025Article
Corrections and comments
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Authors and funding
8 authors.
Funding
Abstract
objectivesTo assess the impact of elastic gradients formed among restorative material, cement, and substrate on the fracture resistance of tri-layer restorative systems.
methodsFour CAD/CAM materials were utilized, two glass-ceramics (IPS e.max CAD, Vita Suprinity) and two resin-ceramic hybrids (Vita Enamic, Lava Ultimate). Their fracture resistance was examined by biaxial flexure (n = 8) and Hertzian indentation (n = 10) tests. Statistical analysis was conducted using ANOVA and Tukey tests (p = 5 %). Finite element analysis (FEA) was employed to simulate the Hertzian indentation test and elucidate the stress-fields formed on the intaglio surface below the loading area.
resultsThe biaxial flexural strength (MPa) of glass-ceramics exceeded the hybrid materials (e.max 417 SIGNIFICANCE: Detailed analysis of the fracture resistance of the tri-layer restorative systems showed that the elastic gradients play a more significant role than the flexural strength of the restorative materials. The coherence of the elastic moduli between the restorative material and supporting structures results in reduced tensile stress concentration at the intaglio surface beneath the loading area and enhances the ability to withstand load.
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