Cargando…
Evaluation of the effect of diode laser for debonding ceramic brackets on nanomechanical properties of enamel
BACKGROUND: The heat from laser can lead to the destruction of organic components of enamel and consequently changes in the mechanical properties of enamel. The purpose of this study was to evaluate the effect of diode laser on the nanomechanical properties of enamel in the process of debonding the...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6134727/ https://www.ncbi.nlm.nih.gov/pubmed/30233656 |
_version_ | 1783354714989002752 |
---|---|
author | Sinaee, Neda Salahi, Sasan Sheikhi, Mostafa |
author_facet | Sinaee, Neda Salahi, Sasan Sheikhi, Mostafa |
author_sort | Sinaee, Neda |
collection | PubMed |
description | BACKGROUND: The heat from laser can lead to the destruction of organic components of enamel and consequently changes in the mechanical properties of enamel. The purpose of this study was to evaluate the effect of diode laser on the nanomechanical properties of enamel in the process of debonding the ceramic brackets. MATERIALS AND METHODS: In This in vitro study Eighteen ceramic brackets were bonded on the intact premolars in 3 groups of 6 (one control and two study groups). To debond the brackets in the study groups, laser diode was used for 3 s with 1W and 3W power. Shear bond strength and adhesive remnant index were recorded for all groups. Hardness and elastic modulus were measured in 1–31 μ depth from enamel surface in each debonded area. Analysis of variance was used for determining the difference in shear bond strength (SBS), hardness, and elastic modulus and was followed by post hoc Tukey's honest significant difference test. One-sample t-test was used to compare the changes in the pulp temperature with the standard threshold (5.5°C). The significance level was set at %5 in this study. RESULTS: SBS was significantly greater in the control group compared to the study groups. There was no significant difference in the average of hardness and elastic modulus of enamel between the groups. Pulp temperature elevation in the study groups was significantly < 5.5°C (P = 0.000). CONCLUSION: The diode laser with either 1W or 3W power for 3 s is effective in debonding the ceramic brackets without any detrimental effect on the pulp or mechanical properties of enamel. In regard to the pulp health, the 1W power laser is rather recommended for debonding the ceramic brackets than the 3W laser power. |
format | Online Article Text |
id | pubmed-6134727 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-61347272018-09-19 Evaluation of the effect of diode laser for debonding ceramic brackets on nanomechanical properties of enamel Sinaee, Neda Salahi, Sasan Sheikhi, Mostafa Dent Res J (Isfahan) Original Article BACKGROUND: The heat from laser can lead to the destruction of organic components of enamel and consequently changes in the mechanical properties of enamel. The purpose of this study was to evaluate the effect of diode laser on the nanomechanical properties of enamel in the process of debonding the ceramic brackets. MATERIALS AND METHODS: In This in vitro study Eighteen ceramic brackets were bonded on the intact premolars in 3 groups of 6 (one control and two study groups). To debond the brackets in the study groups, laser diode was used for 3 s with 1W and 3W power. Shear bond strength and adhesive remnant index were recorded for all groups. Hardness and elastic modulus were measured in 1–31 μ depth from enamel surface in each debonded area. Analysis of variance was used for determining the difference in shear bond strength (SBS), hardness, and elastic modulus and was followed by post hoc Tukey's honest significant difference test. One-sample t-test was used to compare the changes in the pulp temperature with the standard threshold (5.5°C). The significance level was set at %5 in this study. RESULTS: SBS was significantly greater in the control group compared to the study groups. There was no significant difference in the average of hardness and elastic modulus of enamel between the groups. Pulp temperature elevation in the study groups was significantly < 5.5°C (P = 0.000). CONCLUSION: The diode laser with either 1W or 3W power for 3 s is effective in debonding the ceramic brackets without any detrimental effect on the pulp or mechanical properties of enamel. In regard to the pulp health, the 1W power laser is rather recommended for debonding the ceramic brackets than the 3W laser power. Medknow Publications & Media Pvt Ltd 2018 /pmc/articles/PMC6134727/ /pubmed/30233656 Text en Copyright: © 2018 Dental Research Journal http://creativecommons.org/licenses/by-nc-sa/4.0 This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms. |
spellingShingle | Original Article Sinaee, Neda Salahi, Sasan Sheikhi, Mostafa Evaluation of the effect of diode laser for debonding ceramic brackets on nanomechanical properties of enamel |
title | Evaluation of the effect of diode laser for debonding ceramic brackets on nanomechanical properties of enamel |
title_full | Evaluation of the effect of diode laser for debonding ceramic brackets on nanomechanical properties of enamel |
title_fullStr | Evaluation of the effect of diode laser for debonding ceramic brackets on nanomechanical properties of enamel |
title_full_unstemmed | Evaluation of the effect of diode laser for debonding ceramic brackets on nanomechanical properties of enamel |
title_short | Evaluation of the effect of diode laser for debonding ceramic brackets on nanomechanical properties of enamel |
title_sort | evaluation of the effect of diode laser for debonding ceramic brackets on nanomechanical properties of enamel |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6134727/ https://www.ncbi.nlm.nih.gov/pubmed/30233656 |
work_keys_str_mv | AT sinaeeneda evaluationoftheeffectofdiodelaserfordebondingceramicbracketsonnanomechanicalpropertiesofenamel AT salahisasan evaluationoftheeffectofdiodelaserfordebondingceramicbracketsonnanomechanicalpropertiesofenamel AT sheikhimostafa evaluationoftheeffectofdiodelaserfordebondingceramicbracketsonnanomechanicalpropertiesofenamel |