Holographic Analysis of the Initial Canine Displacement Produced by Four Different Retraction Springs

Author:

Kumar Y. Mahesh1,Ravindran N. S.2,Balasubramaniam M. R.3

Affiliation:

1. a Associate Professor, Department of Orthodontics, K.V.G. Dental College and Hospital, Sullia, India

2. b Former Principal, Professor and Head, Department of Orthodontics, T.N. Government Dental College, Chennai, India

3. c Dean, Professor and Head, Department of Orthodontics, S.R.M. Dental College and Hospital, Ramapuram, Chennai, India

Abstract

Abstract Objectives: To estimate and compare the magnitude and direction of initial displacement of the canine produced by four different canine retraction springs. Materials and Methods: A freshly macerated mandible was used as an experimental model. First premolars were extracted, and strap-up was done with a 0.018 inch Roth Preadjusted Edgewise System (3M Unitek, Monrovia, Calif). The canine was subjected to loads of 4 oz, 5 oz, and 6 oz, each applied by four different canine retraction springs, that is, closed coil spring, open coil spring, PG spring, and T-loop retraction spring. The magnitude and direction of the initial displacement of the canine were studied by means of double-exposure interferometry. Results: The PG spring produced the highest initial displacement for a given force among the force systems used, followed by open coil, closed coil, and T-loop. Maximum tipping was observed with the open coil spring, followed by the PG spring, the closed coil spring, and the T-spring. Conclusion: The T-loop may be preferred whenever minimal tipping is performed. The PG spring may be preferred over other springs whenever a higher magnitude of displacement is desired. Closed coil springs may be preferred whenever a reasonable magnitude of displacement is required and reasonable tipping is allowed.

Publisher

The Angle Orthodontist (EH Angle Education & Research Foundation)

Subject

Orthodontics

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. A comprehensive review on loops in orthodontics;IP Indian Journal of Orthodontics and Dentofacial Research;2021-10-15

2. The T-loop in details;Dental Press Journal of Orthodontics;2018-01

3. Effects of bracket slot size duringen-masseretraction of the six maxillary anterior teeth using an induction-heating typodont simulation system;The Korean Journal of Orthodontics;2017

4. Effect of the gable bends on the force system of T-loop orthodontic springs after activation: a numerical–experimental study;Journal of the Brazilian Society of Mechanical Sciences and Engineering;2016-05-02

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3