Evaluation of Multiple Implant-Bone Parameters on Stress Characteristics in the Mandible Under Traumatic Loading Conditions

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Title Evaluation of Multiple Implant-Bone Parameters on Stress Characteristics in the Mandible Under Traumatic Loading Conditions
Author Guan, Hong; Van Staden, Rudi Cobus; Loo, Yew-Chaye; Johnson, Newell Walter; Ivanovski, Saso; Meredith, Neil
Journal Name The International Journal of Oral & Maxillofacial Implants
Year Published 2010
Place of publication United States
Publisher Quintessence Publishing Co., Inc.
Abstract Purpose: The inter-relationships between various implant and bone parameters were evaluated for their influence on the von Mises stress distribution within the mandible using the finite element procedure. The maximum compressive stresses in cancellous and cortical bone were compared to the published stress-strain data to determine bone fracturing status when the maximum (traumatic) loading is applied. Materials and Methods: Parameters considered herein include the implant diameter and length. Also considered are Young's modulus of cancellous bone and that of cortical bone, along with its thickness. The implant-bone system was modeled using two-dimensional plane strain elements, 50% osseointegration between implant and cancellous bone was assumed, and linear relationships were assumed between the stress value and Young's modulus of both cancellous and cortical bone at any specific point within the mandible. Results: Implant length was more influential than implant diameter within cancellous bone, whereas implant diameter was more influential in cortical bone. A ranking of all the parameters indicated that the applied masticatory force had a more significant influence on the stress difference, in both cancellous and cortical bone, than all other parameters. Young's modulus of cortical bone and implant length were least influential in cancellous and cortical bone, respectively. Under traumatic loading, cancellous bone fractured for all parameter combinations. When all parameters were set to their average values, the cortical bone did not fracture under traumatic loading. However, it fractured if all the parameters were all set to the minimum values. Conclusion: Quantitative evaluation and ranking of the major implant and bone parameters will help provide practical guidelines that are useful for the design and testing of dental implants. The study may also be of interest to dental professionals in evaluating possible implant placement options under various clinical scenarios.
Peer Reviewed Yes
Published Yes
Publisher URI http://www.ncbi.nlm.nih.gov/pubmed/20556244
Copyright Statement Copyright 2009 Qintessence Publishing Co. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 25
Issue Number 3
Page from 461
Page to 472
ISSN 0882-2786
Date Accessioned 2010-07-01
Language en_AU
Research Centre Menzies Health Institute Qld; Molecular Basis of Disease
Faculty Griffith Health Faculty
Subject Biomechanical Engineering; Oral and Maxillofacial Surgery
URI http://hdl.handle.net/10072/32264
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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