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Finite element analysis of customized reconstruction plates for mandibular continuity defect therapy

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU105780" target="_blank" >RIV/00216305:26210/14:PU105780 - isvavai.cz</a>

  • Výsledek na webu

    <a href="http://www.sciencedirect.com/science/article/pii/S002192901300568X" target="_blank" >http://www.sciencedirect.com/science/article/pii/S002192901300568X</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.jbiomech.2013.11.016" target="_blank" >10.1016/j.jbiomech.2013.11.016</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Finite element analysis of customized reconstruction plates for mandibular continuity defect therapy

  • Popis výsledku v původním jazyce

    Large mandibular continuity defects pose a significant challenge in oral maxillofacial surgery. One solution to this problem is to use computer-guided surgical planning and additive manufacturing technology to produce patient-specific reconstruction plates. However, when designing customised plates, it is important to assess potential biomechanical responses that may vary substantially depending on the size and geometry of the defect. The aim of this study was to assess the design of two customized plates using finite element method (FEM). These plates were designed for the reconstruction of the lower left mandibles of two ameloblastoma cases (patient1/plate1 and patient2/plate2) with large bone resections differing in both geometry and size. Simulations revealed maximum von Mises stresses of 63 MPa and 108 MPa in plates 1 and 2, and 65 MPa and 190 MPa in the fixation screws of patients 1 and 2. The von Mises strain induced in the bone at the screw-bone interface reached maximum values of 2739 micro-strain for patient 1 and 19575 micro-strain for patient 2. The results demonstrate the influence of design on the stresses induced in the plate and screw bodies. Of particular note, however, are the differences in the induced strains. Unphysiologically high strains in bone adjacent to screws can cause micro-damage leading to bone resorption. This can adversely affect the anchoring capabilities of the screws. Thus, while custom plates offer optimal anatomical fit, attention should be paid to the expected Physiological forces on the plates and the induced stresses and strains in the plate-screw-bone assembly.

  • Název v anglickém jazyce

    Finite element analysis of customized reconstruction plates for mandibular continuity defect therapy

  • Popis výsledku anglicky

    Large mandibular continuity defects pose a significant challenge in oral maxillofacial surgery. One solution to this problem is to use computer-guided surgical planning and additive manufacturing technology to produce patient-specific reconstruction plates. However, when designing customised plates, it is important to assess potential biomechanical responses that may vary substantially depending on the size and geometry of the defect. The aim of this study was to assess the design of two customized plates using finite element method (FEM). These plates were designed for the reconstruction of the lower left mandibles of two ameloblastoma cases (patient1/plate1 and patient2/plate2) with large bone resections differing in both geometry and size. Simulations revealed maximum von Mises stresses of 63 MPa and 108 MPa in plates 1 and 2, and 65 MPa and 190 MPa in the fixation screws of patients 1 and 2. The von Mises strain induced in the bone at the screw-bone interface reached maximum values of 2739 micro-strain for patient 1 and 19575 micro-strain for patient 2. The results demonstrate the influence of design on the stresses induced in the plate and screw bodies. Of particular note, however, are the differences in the induced strains. Unphysiologically high strains in bone adjacent to screws can cause micro-damage leading to bone resorption. This can adversely affect the anchoring capabilities of the screws. Thus, while custom plates offer optimal anatomical fit, attention should be paid to the expected Physiological forces on the plates and the induced stresses and strains in the plate-screw-bone assembly.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    20301 - Mechanical engineering

Návaznosti výsledku

  • Projekt

  • Návaznosti

    S - Specificky vyzkum na vysokych skolach

Ostatní

  • Rok uplatnění

    2014

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    JOURNAL OF BIOMECHANICS

  • ISSN

    0021-9290

  • e-ISSN

    1873-2380

  • Svazek periodika

    47

  • Číslo periodika v rámci svazku

    1

  • Stát vydavatele periodika

    GB - Spojené království Velké Británie a Severního Irska

  • Počet stran výsledku

    6

  • Strana od-do

    264-268

  • Kód UT WoS článku

    000331008200036

  • EID výsledku v databázi Scopus

    2-s2.0-84890856781