Volume 33, Issue 1 (7-2020)                   jdm 2020, 33(1): 54-62 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Mohammad-Hoseini A, Pirmoradian Najafabadi M, Eslami Amirabadi G, Aragh Bidi Kashani M. Comparing the elastomeric behavior and force degradation pattern between different orthodontic elastomeric chains. jdm. 2020; 33 (1) :54-62
URL: http://jdm.tums.ac.ir/article-1-5986-en.html
1- Orthodontist, School of Dentistry, Shahed University, Tehran, Iran
2- Ph.D Candidate, Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
3- Assistant Professor, Department of Orthodontic, School of Dentistry, Shahed University, Tehran, Iran
Abstract:   (967 Views)
Background and Aims: Elastomeric chains are known as a current device with the purpose of dental movement in orthodontic treatments. The aim of this study was to compare the elastomeric behavior and force degradation rate between different elastomeric chains existing in Iran in different time durations.
Materials and Methods: 11 different elastomeric chains used in this study were: Class One, ASTAR, G&H, TSNPT, MIB (French and Chinese type), Ultra Chain and both American, Ortho Technology (simple and memory type). All chains were stretched upon to exert 150 g force and then force degradation rate in 6 time duration
(1, 3, 24 hours and 3, 7, 21 days) and modulus of elasticity (MOE) in 2 time duration (start and 21 days) were investigated. All Data were analyzed statistically by ANOVA, Tukey, Games-Howel tests.
Results: All chains up to the 21th day showed a significant decrease in MOE except for the G&H, ClassOne, simple orthotechnology and a significant force degradation except for the American (memory type). The most significant force degradation rate was in ASTAR gray (P<0.05) and the least in MIB (French), Ultra Chain, and American (P<0.05).
Conclusion: All chains showed significant time-dependent force degradation (mostly in the first day). Only, this rate was not significant in any time duration for the American (memory). In all groups, the most force degradation rate belonged to ASTAR gray and the least to Ultra Chain, MIB (French) and American after 21th day.
Full-Text [PDF 782 kb]   (303 Downloads)    
Type of Study: Research | Subject: operative dentistry
Received: 2020/08/22 | Accepted: 2020/08/31 | Published: 2020/08/31

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


Rights and Permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2022 , Tehran University of Medical Sciences, CC BY-NC 4.0

Designed & Developed by : Yektaweb