Approach towards the porous fibrous structure of the periodontal ligament using micro-computerized tomography and finite element analysis

Ortún‐Terrazas, Javier; Cegoñino, José; Santana‐Penín, Urbano; Santana‐Mora, Urbano; Palomar, Amaya Pérez del

doi:10.1016/j.jmbbm.2017.12.022

Cited by 33 publications

(50 citation statements)

References 83 publications

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“…Because of these porous fibrous effects, we proposed in a previous paper a material model that considered both contributions. This material model combines the transversely isotropic hyperelastic behaviour caused by the collagen network and the time‐dependent response produced by the interstitial fluid.…”

Section: Methodsmentioning

confidence: 99%

“…The dependence of the compressive behaviour on the permeability value is shown in Figure C. The fitting procedures were widely explained in our previous work . Finally, the material model described was implemented in the UMAT user subroutine in Abaqus 6.14 commercial software.…”

Section: Methodsmentioning

confidence: 99%

“…A 3D FE model reproducing the test sample geometry used experimentally by Natali et al was developed using Abaqus CAE 6.14 (Abaqus 6.14, Simulia, Rhode Island, USA). Development of the FE model (Figure A) was extensively explained in our previous work . After a mesh refinement process, the average size of the elements was approximately 0.035 mm.…”

Section: Methodsmentioning

confidence: 99%

“…Some FE studies use isotropic hyperelastic or elastic properties for the ligament or viscoelastic material models . Instead of defining the PDL as an isotropic tissue without fluid coupling, we considered the porous and fibrous components of the PDL in our previous study . Thus, a complex material model that takes into account different behaviours for tensile and compressive effects was developed.…”

Section: Introductionmentioning

confidence: 99%

“…The main objective of this study was to analyse the mechanical response of the PDL under traumatic conditions considering the softening phenomena caused by fibre alignment and rupture. A constitutive damage model was developed and incorporated into our previous material model . This damage model of PDL tissue was then implemented into an FE model of a human periodontium obtained by microCT.…”

Section: Introductionmentioning

confidence: 99%

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A porous fibrous hyperelastic damage model for human periodontal ligament: Application of a microcomputerized tomography finite element model

Ortún‐Terrazas

Cegoñino

Santana‐Penín

et al. 2019

Numer Methods Biomed Eng

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The periodontal ligament (PDL) is a soft biological tissue that connects the tooth with the trabecular bone of the mandible. It plays a key role in load transmission and is primarily responsible for bone resorption and most common periodontal diseases. Although several numerical studies have analysed the biomechanical response of the PDL, most did not consider its porous fibrous structure, and only a few analysed damage to the PDL. This study presents an innovative numerical formulation of a porous fibrous hyperelastic damage material model for the PDL. The model considers two separate softening phenomena: fibre alignment during loading and fibre rupture. The parameters for the material model characterization were fitted using experimental data from the literature. Furthermore, the experimental tests used for characterization were computationally modelled to verify the material parameters. A finite element model of a portion of a human mandible, obtained by microcomputerized tomography, was developed, and the proposed constitutive model was implemented for the PDL. Our results confirm that damage to the PDL may occur mainly because of overpressure of the interstitial fluid, while large forces must be applied to damage the PDL fibrous network. Moreover, this study clarifies some aspects of the relationship between PDL damage and the bone remodelling process.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations