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An In-vitro Comparison of Force Loss of Orthodontic Non-Latex Elastics
OBJECTIVE: The amount and consistency of the applied forces to the tooth are important factors in tooth movements; therefore, the aim of this study was to compare the initial force and the force loss of three brands of elastics in 24 hours. MATERIALS AND METHODS: In this in-vitro study sixty non-lat...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Tehran University of Medical Sciences
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4037257/ https://www.ncbi.nlm.nih.gov/pubmed/24910671 |
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author | Alavi, Shiva Tabatabaie, Atusa Rahnama Hajizadeh, Fatemeh Ardekani, Alireza Haerian |
author_facet | Alavi, Shiva Tabatabaie, Atusa Rahnama Hajizadeh, Fatemeh Ardekani, Alireza Haerian |
author_sort | Alavi, Shiva |
collection | PubMed |
description | OBJECTIVE: The amount and consistency of the applied forces to the tooth are important factors in tooth movements; therefore, the aim of this study was to compare the initial force and the force loss of three brands of elastics in 24 hours. MATERIALS AND METHODS: In this in-vitro study sixty non-latex elastics (3/16 medium) from three companies (Forestadent, Dentaurum and Ortho Technology) were randomly selected. Two static tests were performed, the first in a dry environment to evaluate the initial force and the other performed in a wet environment (artificial saliva) to evaluate the force loss in 24 hours. The Universal testing machine measured the forces after stretching the elastics to three times the lumen diameter. Data were analyzed by repeated measures ANOVA, One-way ANOVA, Tukey-HSD, Paired samples test, and one sample test. RESULTS: The difference between the brands was significant (p=0.002). Force loss was observed in all samples; 4–7.5% force loss occurred after one hour and 19–38% force loss occurred after 24 hours. The average initial force of Forestadent and Ortho Technology was significantly higher than marketed forces (p<0.001), but the initial force of Dentaurum elastics was similar to the marketed force. CONCLUSION: The force loss over 24 hours time period was Forestadent>Dentaurum>Ortho-Technology. According to the initial force and force loss percentage it is suggested to replace the non-latex elastics several times a day. |
format | Online Article Text |
id | pubmed-4037257 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Tehran University of Medical Sciences |
record_format | MEDLINE/PubMed |
spelling | pubmed-40372572014-06-06 An In-vitro Comparison of Force Loss of Orthodontic Non-Latex Elastics Alavi, Shiva Tabatabaie, Atusa Rahnama Hajizadeh, Fatemeh Ardekani, Alireza Haerian J Dent (Tehran) Original Article OBJECTIVE: The amount and consistency of the applied forces to the tooth are important factors in tooth movements; therefore, the aim of this study was to compare the initial force and the force loss of three brands of elastics in 24 hours. MATERIALS AND METHODS: In this in-vitro study sixty non-latex elastics (3/16 medium) from three companies (Forestadent, Dentaurum and Ortho Technology) were randomly selected. Two static tests were performed, the first in a dry environment to evaluate the initial force and the other performed in a wet environment (artificial saliva) to evaluate the force loss in 24 hours. The Universal testing machine measured the forces after stretching the elastics to three times the lumen diameter. Data were analyzed by repeated measures ANOVA, One-way ANOVA, Tukey-HSD, Paired samples test, and one sample test. RESULTS: The difference between the brands was significant (p=0.002). Force loss was observed in all samples; 4–7.5% force loss occurred after one hour and 19–38% force loss occurred after 24 hours. The average initial force of Forestadent and Ortho Technology was significantly higher than marketed forces (p<0.001), but the initial force of Dentaurum elastics was similar to the marketed force. CONCLUSION: The force loss over 24 hours time period was Forestadent>Dentaurum>Ortho-Technology. According to the initial force and force loss percentage it is suggested to replace the non-latex elastics several times a day. Tehran University of Medical Sciences 2014-01 2014-01-31 /pmc/articles/PMC4037257/ /pubmed/24910671 Text en Copyright © Dental Research Center, Tehran University of Medical Sciences http://creativecommons.org/licenses/by-nc/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution NonCommercial 3.0 License (CC BY-NC 3.0), which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly. |
spellingShingle | Original Article Alavi, Shiva Tabatabaie, Atusa Rahnama Hajizadeh, Fatemeh Ardekani, Alireza Haerian An In-vitro Comparison of Force Loss of Orthodontic Non-Latex Elastics |
title | An In-vitro Comparison of Force Loss of Orthodontic Non-Latex Elastics |
title_full | An In-vitro Comparison of Force Loss of Orthodontic Non-Latex Elastics |
title_fullStr | An In-vitro Comparison of Force Loss of Orthodontic Non-Latex Elastics |
title_full_unstemmed | An In-vitro Comparison of Force Loss of Orthodontic Non-Latex Elastics |
title_short | An In-vitro Comparison of Force Loss of Orthodontic Non-Latex Elastics |
title_sort | in-vitro comparison of force loss of orthodontic non-latex elastics |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4037257/ https://www.ncbi.nlm.nih.gov/pubmed/24910671 |
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