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Frictional resistance in monocrystalline ceramic brackets with conventional and nonconventional elastomeric ligatures
BACKGROUND: The objective of this study was to compare the frictional forces generated by three types of monocrystalline ceramic brackets coupled with conventional elastomeric ligatures (CEL) and nonconventional elastomeric ligatures (NCEL) during the alignment of apically displaced teeth at the max...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer-Verlag
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4384920/ https://www.ncbi.nlm.nih.gov/pubmed/24325886 http://dx.doi.org/10.1186/2196-1042-14-9 |
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author | Galvão, Mariana Bulhoes Camporesi, Matteo Tortamano, André Dominguez, Gladys Cristina Defraia, Efisio |
author_facet | Galvão, Mariana Bulhoes Camporesi, Matteo Tortamano, André Dominguez, Gladys Cristina Defraia, Efisio |
author_sort | Galvão, Mariana Bulhoes |
collection | PubMed |
description | BACKGROUND: The objective of this study was to compare the frictional forces generated by three types of monocrystalline ceramic brackets coupled with conventional elastomeric ligatures (CEL) and nonconventional elastomeric ligatures (NCEL) during the alignment of apically displaced teeth at the maxillary arch. METHODS: All tests (a total of 480 tests) were carried out in a dry state on a universal testing machine with a testing model consisting of three 0.022-in. monocrystalline ceramic preadjusted brackets (from the maxillary right second premolar through the right central incisor). The canine bracket was bonded to a sliding bar that allowed for different vertical positions. The frictional forces generated by a 0.012- and 0.014-in. superelastic nickel titanium wire (SENT) with conventional and nonconventional ligatures at various amounts of canine misalignment (1.5, 3.0, 4.5, and 6.0 mm) were recorded. Comparisons between the different types of bracket-wire-ligature systems were carried out by means of analysis of variance on ranks with Tukey's post hoc test (P < 0.05). RESULTS: No significant differences were assessed among the three types of monocrystalline brackets with NCEL when coupled with 0.012-in. SENT. Radiance brackets with NCEL coupled with 0.014-in. SENT showed significantly greater frictional force than Inspire Ice brackets and Pure brackets with NCEL. A significantly greater amount of frictional force was generated with CEL when compared with NCEL for all the tested variables, with the exception of the Pure brackets with 0.012-in. SENT at 1.5 and 3.0 mm of canine misalignment where similar frictional forces were found. CONCLUSIONS: Nonconventional elastomeric ligatures are able to reduce friction in monocrystalline ceramic brackets. |
format | Online Article Text |
id | pubmed-4384920 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Springer-Verlag |
record_format | MEDLINE/PubMed |
spelling | pubmed-43849202015-04-04 Frictional resistance in monocrystalline ceramic brackets with conventional and nonconventional elastomeric ligatures Galvão, Mariana Bulhoes Camporesi, Matteo Tortamano, André Dominguez, Gladys Cristina Defraia, Efisio Prog Orthod Research BACKGROUND: The objective of this study was to compare the frictional forces generated by three types of monocrystalline ceramic brackets coupled with conventional elastomeric ligatures (CEL) and nonconventional elastomeric ligatures (NCEL) during the alignment of apically displaced teeth at the maxillary arch. METHODS: All tests (a total of 480 tests) were carried out in a dry state on a universal testing machine with a testing model consisting of three 0.022-in. monocrystalline ceramic preadjusted brackets (from the maxillary right second premolar through the right central incisor). The canine bracket was bonded to a sliding bar that allowed for different vertical positions. The frictional forces generated by a 0.012- and 0.014-in. superelastic nickel titanium wire (SENT) with conventional and nonconventional ligatures at various amounts of canine misalignment (1.5, 3.0, 4.5, and 6.0 mm) were recorded. Comparisons between the different types of bracket-wire-ligature systems were carried out by means of analysis of variance on ranks with Tukey's post hoc test (P < 0.05). RESULTS: No significant differences were assessed among the three types of monocrystalline brackets with NCEL when coupled with 0.012-in. SENT. Radiance brackets with NCEL coupled with 0.014-in. SENT showed significantly greater frictional force than Inspire Ice brackets and Pure brackets with NCEL. A significantly greater amount of frictional force was generated with CEL when compared with NCEL for all the tested variables, with the exception of the Pure brackets with 0.012-in. SENT at 1.5 and 3.0 mm of canine misalignment where similar frictional forces were found. CONCLUSIONS: Nonconventional elastomeric ligatures are able to reduce friction in monocrystalline ceramic brackets. Springer-Verlag 2013-05-23 /pmc/articles/PMC4384920/ /pubmed/24325886 http://dx.doi.org/10.1186/2196-1042-14-9 Text en © Galvão et al.; licensee Springer. 2013 This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Galvão, Mariana Bulhoes Camporesi, Matteo Tortamano, André Dominguez, Gladys Cristina Defraia, Efisio Frictional resistance in monocrystalline ceramic brackets with conventional and nonconventional elastomeric ligatures |
title | Frictional resistance in monocrystalline ceramic brackets with conventional and nonconventional elastomeric ligatures |
title_full | Frictional resistance in monocrystalline ceramic brackets with conventional and nonconventional elastomeric ligatures |
title_fullStr | Frictional resistance in monocrystalline ceramic brackets with conventional and nonconventional elastomeric ligatures |
title_full_unstemmed | Frictional resistance in monocrystalline ceramic brackets with conventional and nonconventional elastomeric ligatures |
title_short | Frictional resistance in monocrystalline ceramic brackets with conventional and nonconventional elastomeric ligatures |
title_sort | frictional resistance in monocrystalline ceramic brackets with conventional and nonconventional elastomeric ligatures |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4384920/ https://www.ncbi.nlm.nih.gov/pubmed/24325886 http://dx.doi.org/10.1186/2196-1042-14-9 |
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