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Related Concept Videos

Typical Model Studies01:30

Typical Model Studies

457
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
457
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

364
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
364

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Related Experiment Video

Updated: Oct 2, 2025

Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes
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Highly-filled flowable composite in deep margin elevation: FEA study obtained from a microCT real model.

Andrea Baldi1, Alessandro Scattina2, Giorgio Ferrero1

  • 1Department of Surgical Sciences, Dental School Lingotto, University of Turin, Turin, Italy.

Dental Materials : Official Publication of the Academy of Dental Materials
|February 27, 2022
PubMed
Summary
This summary is machine-generated.

Highly-filled flowable resin composites effectively reduce stress at the tooth-restoration interface during deep margin elevation. Enamel substrates offer a protective role, warranting further investigation into their mechanical benefits.

Keywords:
Deep margin elevationFinite elementsHighly-filled flowable compositesInterfacesMicro-CT

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Area of Science:

  • Biomaterials Science
  • Dental Materials
  • Biomechanics

Background:

  • Deep margin elevation is crucial for restoring deep cavities.
  • Understanding interfacial stress is key to material longevity.

Purpose of the Study:

  • To evaluate shear stress (SS) and normal pressure (NP) at the tooth-restoration interface.
  • To assess highly-filled flowable resin composite in deep margin elevation using FEM analysis.

Main Methods:

  • A 3D Finite Element (FE) model was created from a micro-CT scan of a maxillary molar.
  • An axial chewing load was simulated to analyze interfacial SS and NP.
  • Effects of different materials and cervical substrates were evaluated.

Main Results:

  • Highly-filled flowable composites demonstrated more homogeneous stress distribution than ceramics.
  • Using a highly-filled flowable composite liner significantly reduced SS and NP.
  • Enamel cervical margins showed a protective effect on stress distribution.

Conclusions:

  • Highly-filled flowable resin composites show promise for deep margin elevation.
  • Further research is needed to validate findings and clarify enamel's role.