Dynamic modelling and simulation of dental implant insertion process—A finite element study

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Title Dynamic modelling and simulation of dental implant insertion process—A finite element study
Author Guan, Hong; Van Staden, Rudi Cobus; Johnson, Newell Walter; Loo, Yew-Chaye
Journal Name Finite Elements in Analysis and Design
Editor John E. Dolbow and Tod A. Laursen
Year Published 2011
Place of publication Netherlands
Publisher Elsevier B.V.
Abstract Objectives: using the finite element technique, the stress characteristics within the mandible are evaluated during a dynamic simulation of the implant insertion process. Implantation scenarios considered are implant thread forming (S1), cutting (S2) and the combination of forming and cutting (S3). Ultimately, the outcome of this study will provide an improved understanding of the failure mechanism consequential to the stress distribution characteristics in the mandible during the implantation process. Material and methods: parameters considered herein include bone cavity diameters of 3.9 mm (for S2), 4.25 mm (for S1) and a tapered cavity of diameters linearly varying from 3.9 to 4.25 mm (for S3). The bone-implant system is modelled using three-dimensional tetrahedral elements. Idealised bone and implant interaction properties are assumed. The stress profiles in the mandible are examined for all bone cavity diameters. Results and conclusion: the stress levels within the cancellous and cortical bone for S1 are significantly reduced when compared to scenarios S2 and S3. For S3, during the initial insertion steps, the stress is marginally less than that for S2. Close to the end of the insertion process, the stress level within the cancellous bone in S3 is approximately half way between that of S1 and S2. Generally for all scenarios, as the insertion depth increases the stress increases less significantly in the cortical bone than in the cancellous bone. Overall, different implant surface contact areas are the major contributors to the different stress characteristics of each scenario.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1016/j.finel.2011.03.005
Copyright Statement Copyright 2011 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 47
Issue Number 8
Page from 886
Page to 897
ISSN 1872-6925
Date Accessioned 2011-07-11
Language en_AU
Research Centre Griffith Health Institute
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Biomechanical Engineering
URI http://hdl.handle.net/10072/41082
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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