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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20301 - Mechanical engineering

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

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

Name of the periodical

JOURNAL OF BIOMECHANICS

ISSN

0021-9290

e-ISSN

1873-2380

Volume of the periodical

47

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

6

Pages from-to

264-268

UT code for WoS article

000331008200036

EID of the result in the Scopus database

2-s2.0-84890856781