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Special Article | Publishing Language: Chinese | Open Access

Initial stability analysis of the torque-resisted orthodontic miniscrew anchorage

Jian-na ZHANG, Shao-hai CHANG( ), Yu-shan YE, Ying-juan LU
Institute of Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China
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Abstract

Objective

To compare the initial stability difference between a new designed torque-resisted orthodontic miniscrew anchorage and commercial miniscrew anchorage by torque tests and resonance frequency analysis (RFA).

Methods

After predrilled 4 mm-deep holes with a diameter of 1. 0 mm, two different miniscrews were implanted into the swine ribs for measurement of maximum insertion torque (MIT), maximum removal torque (MRT) and RFA which was recorded as implant stability quotient (ISQ). Statistical analysis was done for all data by SPSS 13. 0.

Results

The mean value of MIT, MRT, ISQ for new miniscrews were (11. 86 ± 1. 58) N·cm, (8. 45 ± 2. 24) N· cm and 61. 80 ± 2. 9 while for commercial miniscrews were (10. 36 ± 1. 42) N·cm, (6. 76 ± 1. 78) N·cm and 58. 15 ± 2. 98. The differences between the two miniscrews were statistically significant (P ＜ 0. 05).

Conclusion

The torque-resisted miniscrews were more stable than commercial miniscrews.

Keywords

Miniscrew anchorageTorque-resistedInitial stabilityTorque analysisResonance frequency analysis
CLC number: R783.1 Document code: A Article ID: 2096-1456(2016)03-137-05

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Journal of Prevention and Treatment for Stomatological Diseases
Volume 24 Issue 3,
March 2016
Pages 137-141
DOI: 10.12016/j.issn.2096-1456.2016.03.002

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Cite this article:
ZHANG J-n, CHANG S-h, YE Y-s, et al. Initial stability analysis of the torque-resisted orthodontic miniscrew anchorage. Journal of Prevention and Treatment for Stomatological Diseases, 2016, 24(3): 137-141. https://doi.org/10.12016/j.issn.2096-1456.2016.03.002

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Received: 02 September 2015
Revised: 11 October 2025
Published: 20 March 2016
© 2016 by Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases

This article is licensed under a Creative Commons Attribution 4.0 International License.