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Effect of microthread design of dental implants on stress and strain patterns: a three-dimensional finite element analysis

  • Reza Amid , Saeed Raoofi , Mahdi Kadkhodazadeh , Mohammad Reza Movahhedi and Maryam Khademi EMAIL logo
Published/Copyright: September 9, 2013

Abstract

The aim of this study was to use finite element analysis (FEA) to assess the influence of microthread design at the implant neck on stress distribution in the surrounding bone. A commercially available implant with 3.5 mm diameter and 10.5 mm length was selected and used as a model. For the purpose of designing the microthread implant model, microthreads were added to the implant neck in a computerized model. A force measuring 100 N was then applied to the entire surface of the abutment in the vertical direction. The results showed that in both models, stress was mainly concentrated at the cortical bone adjacent to the neck of the implant. Maximum stress values in the cortical bone surrounding the implant surface periphery were 12 and 6.25 MPa for the microthread and conventional models, respectively. In this study, we conclude that adding a microthread design at the implant neck decreased stress values in the adjacent bone.


Corresponding author: Maryam Khademi, Assistant Professor, Department of Periodontics, Ahwaz Dental School, Ahwaz University of Medical Sciences, Ahwaz, Iran, Phone: +00989126587748, Fax: +00982122427753, E-mail:

We would like to thank BioHorizons, Iran (Xarrin Advanced Technologies), for their support and supply of the fixture samples and Mr. Ali Nikparto (MS, Mechanic Faculty, Sharif University, Iran) for his role in finite element analysis.

Conflict of interest statement

The authors have no financial interest in any company or any of the products mentioned in this article.

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Received: 2012-11-21
Accepted: 2013-8-13
Published Online: 2013-09-09
Published in Print: 2013-10-01

©2013 by Walter de Gruyter Berlin Boston

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