Modeling and Numerical Analysis of a Cervical Spine Unit

Toth-Taşcău, Mirela; Stoia, Dan Ioan

doi:10.1007/978-1-4614-4328-5_7

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…The finite element analysis was performed based on geometrical information provided by clinical data. Computed tomography (CT) images of the upper limb, possessing the broken LCP, were acquired and the DICOM files imported in MIMICS 10.1 (Materialise Inc., Leeuwen, Belgium) in order to generate the 3D reconstruction [23,24]. The raw volumes were digitally processed for further refined and mesh repairing using Geomagic Studio 9 (3D Systems, Morrisville, NC, USA).…”

Section: Methodsmentioning

confidence: 99%

Failure Analysis of a Humeral Shaft Locking Compression Plate—Surface Investigation and Simulation by Finite Element Method

et al. 2019

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A case study of a failed humeral shaft locking compression plate is presented, starting with a clinical case where failure occurred and an implant replacement was required. This study uses finite element method (FEM) in order to determine the failure modes for the clinical case. Four loading scenarios that simulate daily life activities were considered for determining the stress distribution in a humeral shaft locking compression plate (LCP). Referring to the simulation results, the failure analysis was performed on the explant. Using fracture surface investigation methods, stereomicroscopy and scanning electron microscopy (SEM), a mixed mode failure was determined. An initial fatigue failure occurred followed by a sudden failure of the plate implant as a consequence of patient’s fall. The fracture morphology was mostly masked by galling; the fractured components were in a sliding contact. Using information from simulations, the loading was inferred and correlated with fracture site and surface features.

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Section: Methodsmentioning

confidence: 99%

Failure Analysis of a Humeral Shaft Locking Compression Plate—Surface Investigation and Simulation by Finite Element Method

et al. 2019

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“…The construction of the geometric model was accomplished by reconstructing a set of computer tomography images of an unaffected natural molar. This reverse engineering technique allowed us to achieve accurate shape and dimensions of the tooth and to reproduce the finest geometric features [ 18 , 19 , 20 ]. The reconstruction was made in MIMICS 10.1 (Materialise Inc., Leeuwen, Belgium), in which the 3D geometry was achieved.…”

Section: Methodsmentioning

confidence: 99%

Adhesive-Ceramic Interface Behavior in Dental Restorations. FEM Study and SEM Investigation

et al. 2021

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The purpose of this study is to identify the stress levels that act in inlay and onlay restorations, according to the direction and value of the external force applied. The study was conducted using the Finite Element Method (FEM) of three types of ceramics: pressed lithium disilicate and monolith, zirconia, and three different adhesive systems: self-adhesive, universal, and dual-cure cements. In addition to FEM, the inlay/onlay-dental structure interface analysis was performed by means of Scanning Electron Microscopy (SEM). The geometric models were reconstructed based on computer tomography images of an undamaged molar followed by geometrical procedures of inducing the inlay and onlay reconstructions. The two functional models were then simulated for different orientations of external force and different material properties, according to the considered adhesives and ceramics. The Scanning Electron Microscopy (SEM) was conducted on 30 extracted teeth, divided into three groups according to the adhesive cement type. Both FEM simulation and SEM investigations reveal very good mechanical behavior of the adhesive-dental structure and adhesive-ceramic interfaces for inlay and onlay reconstructions. All results lead to the conclusion that a physiological mastication force applied, regardless of direction, cannot produce a mechanical failure of either inlay or onlay reconstructions. The adhesive bond between the restorations and the dental structure can stabilize the ceramic restorations, resulting in a higher strength to the action of external forces.

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Modeling and Numerical Analysis of a Cervical Spine Unit

Cited by 2 publications

References 30 publications

Failure Analysis of a Humeral Shaft Locking Compression Plate—Surface Investigation and Simulation by Finite Element Method

Failure Analysis of a Humeral Shaft Locking Compression Plate—Surface Investigation and Simulation by Finite Element Method

Adhesive-Ceramic Interface Behavior in Dental Restorations. FEM Study and SEM Investigation

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