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Biomechanical performance of cranial implants with different thicknesses and material properties: A finite element study

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Biomechanical performance of cranial implants with different thicknesses and material properties : A finite element study. / Marcián, Petr; Narra, Nathaniel; Borák, Libor; Chamrad, Jakub; Wolff, Jan.

julkaisussa: Computers in Biology and Medicine, Vuosikerta 109, 01.06.2019, s. 43-52.

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Harvard

Marcián, P, Narra, N, Borák, L, Chamrad, J & Wolff, J 2019, 'Biomechanical performance of cranial implants with different thicknesses and material properties: A finite element study', Computers in Biology and Medicine, Vuosikerta. 109, Sivut 43-52. https://doi.org/10.1016/j.compbiomed.2019.04.016

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Author

Marcián, Petr ; Narra, Nathaniel ; Borák, Libor ; Chamrad, Jakub ; Wolff, Jan. / Biomechanical performance of cranial implants with different thicknesses and material properties : A finite element study. Julkaisussa: Computers in Biology and Medicine. 2019 ; Vuosikerta 109. Sivut 43-52.

Bibtex - Lataa

@article{4f62ba870c6147f09e98e875693d589a,
title = "Biomechanical performance of cranial implants with different thicknesses and material properties: A finite element study",
abstract = "This study investigated the effect of implant thickness and material on deformation and stress distribution within different components of cranial implant assemblies. Using the finite element method, two cranial implants, differing in size and shape, and thicknesses (1, 2, 3 and 4 mm, respectively), were simulated under three loading scenarios. The implant assembly model included the detailed geometries of the mini-plates and micro-screws and was simulated using a sub-modeling approach. Statistical assessments based on the Design of Experiment methodology and on multiple regression analysis revealed that peak stresses in the components are influenced primarily by implant thickness, while the effect of implant material is secondary. On the contrary, the implant deflection is influenced predominantly by implant material followed by implant thickness. The highest values of deformation under a 50 N load were observed in the thinnest (1 mm) Polymethyl Methacrylate implant (Small defect: 0.296 mm; Large defect: 0.390 mm). The thinnest Polymethyl Methacrylate and Polyether Ether Ketone implants also generated stresses in the implants that can potentially breach the materials' yield limit. In terms of stress distribution, the change of implant thickness had a more significant impact on the implant performance than the change of Young's modulus of the implant material. The results indicated that the stresses are concentrated in the locations of fixation; therefore, the detailed models of mini-plates and micro-screws implemented in the finite element simulation provided a better insight into the mechanical performance of the implant-skull system.",
keywords = "3D printing, Cranioplasty, Finite element method, Mechanical properties, Skull implant",
author = "Petr Marci{\'a}n and Nathaniel Narra and Libor Bor{\'a}k and Jakub Chamrad and Jan Wolff",
year = "2019",
month = "6",
day = "1",
doi = "10.1016/j.compbiomed.2019.04.016",
language = "English",
volume = "109",
pages = "43--52",
journal = "Computers in Biology and Medicine",
issn = "0010-4825",
publisher = "Elsevier",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Biomechanical performance of cranial implants with different thicknesses and material properties

T2 - A finite element study

AU - Marcián, Petr

AU - Narra, Nathaniel

AU - Borák, Libor

AU - Chamrad, Jakub

AU - Wolff, Jan

PY - 2019/6/1

Y1 - 2019/6/1

N2 - This study investigated the effect of implant thickness and material on deformation and stress distribution within different components of cranial implant assemblies. Using the finite element method, two cranial implants, differing in size and shape, and thicknesses (1, 2, 3 and 4 mm, respectively), were simulated under three loading scenarios. The implant assembly model included the detailed geometries of the mini-plates and micro-screws and was simulated using a sub-modeling approach. Statistical assessments based on the Design of Experiment methodology and on multiple regression analysis revealed that peak stresses in the components are influenced primarily by implant thickness, while the effect of implant material is secondary. On the contrary, the implant deflection is influenced predominantly by implant material followed by implant thickness. The highest values of deformation under a 50 N load were observed in the thinnest (1 mm) Polymethyl Methacrylate implant (Small defect: 0.296 mm; Large defect: 0.390 mm). The thinnest Polymethyl Methacrylate and Polyether Ether Ketone implants also generated stresses in the implants that can potentially breach the materials' yield limit. In terms of stress distribution, the change of implant thickness had a more significant impact on the implant performance than the change of Young's modulus of the implant material. The results indicated that the stresses are concentrated in the locations of fixation; therefore, the detailed models of mini-plates and micro-screws implemented in the finite element simulation provided a better insight into the mechanical performance of the implant-skull system.

AB - This study investigated the effect of implant thickness and material on deformation and stress distribution within different components of cranial implant assemblies. Using the finite element method, two cranial implants, differing in size and shape, and thicknesses (1, 2, 3 and 4 mm, respectively), were simulated under three loading scenarios. The implant assembly model included the detailed geometries of the mini-plates and micro-screws and was simulated using a sub-modeling approach. Statistical assessments based on the Design of Experiment methodology and on multiple regression analysis revealed that peak stresses in the components are influenced primarily by implant thickness, while the effect of implant material is secondary. On the contrary, the implant deflection is influenced predominantly by implant material followed by implant thickness. The highest values of deformation under a 50 N load were observed in the thinnest (1 mm) Polymethyl Methacrylate implant (Small defect: 0.296 mm; Large defect: 0.390 mm). The thinnest Polymethyl Methacrylate and Polyether Ether Ketone implants also generated stresses in the implants that can potentially breach the materials' yield limit. In terms of stress distribution, the change of implant thickness had a more significant impact on the implant performance than the change of Young's modulus of the implant material. The results indicated that the stresses are concentrated in the locations of fixation; therefore, the detailed models of mini-plates and micro-screws implemented in the finite element simulation provided a better insight into the mechanical performance of the implant-skull system.

KW - 3D printing

KW - Cranioplasty

KW - Finite element method

KW - Mechanical properties

KW - Skull implant

U2 - 10.1016/j.compbiomed.2019.04.016

DO - 10.1016/j.compbiomed.2019.04.016

M3 - Article

VL - 109

SP - 43

EP - 52

JO - Computers in Biology and Medicine

JF - Computers in Biology and Medicine

SN - 0010-4825

ER -