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Advances in Materials Science and Engineering
Volume 2016, Article ID 2913032, 6 pages
Research Article

A New Appliance for Improving the Miniscrew Stability

1Department of Orthodontics, Faculty of Dentistry, Bulent Ecevit University, 67100 Zonguldak, Turkey
2Department of Mechanical Engineering, Faculty of Engineering, Bulent Ecevit University, 67100 Zonguldak, Turkey

Received 17 March 2016; Accepted 2 July 2016

Academic Editor: Moustafa N. Aboushelib

Copyright © 2016 Nurhat Ozkalayci and Mehmet Yetmez. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The aim of this study is to present a new appliance called stability leg designed as an additional anchorage providing device for increasing primary stability of orthodontic miniscrew. For this purpose, two finite element models (FEMs) with two different cortical layer thicknesses of 1 mm and 2 mm are considered. In order to achieve the stability analysis, these two main models, namely, Model I and Model II, are divided into subgroups according to stability leg lengths. Two types of forces are considered. (1) First force is a constant force of 1 N which is applied to all two models. (2) Second force is defined in the range of 1–4 N. Each of 1, 2.5, and 4 N of the second force is applied with a position angle ranging from 34° to 44°. Results show that stability of a miniscrew with 5 mm leg increases primary stability of the miniscrew.