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Updated: Aug 17, 2026
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
[A three-dimensional finite element analysis for the biomechanical characteristics of orthodontic anchorage
Yang Zhang1, Dan Zhang, Cui-juan Feng
1Department of Orthodontics, School of Stomatology, China Medical University, Shenyang 110002, Liaoning Province, China. zhangyangcmu@yahoo.com.cn
Purpose:
To establish a three-dimensional finite element model for orthodontic anchorage micro-implant,and to analyze the influence of different titled angles on the biomechanical characteristics of orthodontic anchorage implant-bone interface.
Methods:
ANSYS(Analysis System)finite element analysis software was used to perform the finite element modeling of the micro-implant with 7 different tilted angles, including 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees and 90 degrees. A simulated orthodontic force, which was 200 grams, was loaded mesiodistally to the mathematical models. The stress and displacement distribution on the implant-bone interface were analyzed.
Results:
As the titled angle increased, the Von-Mises stress at the cervix of the implants were 1.0792, 1.0104, 0.8848, 0.8181, 0.7583, 0.6339 and 0.5608MPa, while the displacement were 5.5513, 4.9900, 3.7419, 3.1264, 2.5874, 1.3624 and 0.8027microm
Conclusion:
The micro-implant can be safely loaded with 200 grams of mesiodistal orthodontic force. The increase of the titled angle can efficaciously enhance the ability,implicating that the implant can bear a mesiodistal orthodontic force, vertical angle should be chosen when the micro-implant is embedded. Supported by Natural Science Foundation of Liaoning Province (20042076).
