LOGIN
 
Share Page:
Back

Volume 22 , Issue 3
May/June 2007

Pages 436445


The Validation of a Compression Testing Method for Cancellous Human Jawbone by High-resolution Finite Element Modeling

Nele Stoppie, DDS / Tim Van Cleynenbreugel, M Sc Eng, PhD / Martine Wevers, M Sc Eng, PhD / Jos Vander Sloten, M Sc Eng, PhD / Ignace Naert, DDS, PhD


PMID: 17622011

Purpose: The aim of this study was to determine a reliable compression testing method for cancellous jawbone specimens and to validate it by high-resolution finite element (FE) modeling based on micro-computerized tomography (CT) images of the specimens. Materials and Methods: Three series of human femoral bone samples were tested to establish a compression protocol for human jawbone cores. A CT scan of each bone sample was obtained. A simple destructive compression test was performed on the first series of 12 femoral bone samples (13 mm height and 6.1 mm diameter). The 5 femoral bone samples of the second series (13 mm height and 6.1 mm diameter) were constrained using end caps and subjected to 10 to 15 conditioning cycles before the destructive test from which the Youngs modulus (Emeas) was determined. The third series of 5 smaller femoral samples (8 mm height and 5.5 mm diameter) and the series of 5 jaw bone samples (8 mm height and 5.7 mm diameter) underwent the same testing protocol. FE models were created based on the CT images, and the simulated E-modulus (Ecalc) was calculated. Results: The intraclass correlation between Emeas and Ecalc corresponded to 0.74 for the first series of femoral bone samples, 0.96 for the second series, and 0.51 for the third series. For the jawbone samples, the intraclass correlation coefficient equaled 0.88. Conclusion: Reliable results for compression testing of cancellous jawbone can be obtained with cylindric specimens with a diameter of 5.7 mm, a length:diameter ratio 1.4, and flat top and bottom surfaces. The recommended compression method is constrained compression with 10 to 15 conditioning cycles, followed by a destructive test. Int J Oral Maxillofac Implants 2007;22:436445

Key words: cancellous bone, compression, finite element modeling, jaws, micro-computerized tomography


Full Text PDF File | Order Article

 

 
Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.

 

© 2014 Quintessence Publishing Co, Inc JOMI Home
Current Issue
Ahead of Print
Archive
Author Guidelines
About
Accepted Manuscripts
Submission Form
Submit
Reprints
Permission
Advertising
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us
Help