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Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins

Background. The aim of this study was to investigate the effect of preheating methacrylate- and silorane-based composite resins on their color stability up to 40 times at 55‒60°C. Methods. Seventy-six methacrylate and silorane-based composite resin samples, with a diameter of 10 mm and a height of 2...

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Autores principales: Abed Kahnamouei, Mehdi, Gholizadeh, Sarah, Rikhtegaran, Sahand, Daneshpooy, Mehdi, Kimyai, Soodabeh, Alizadeh Oskoee, Parnian, Rezaei, Yashar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Tabriz University of Medical Sciences 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5768954/
https://www.ncbi.nlm.nih.gov/pubmed/29354248
http://dx.doi.org/10.15171/joddd.2017.039
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author Abed Kahnamouei, Mehdi
Gholizadeh, Sarah
Rikhtegaran, Sahand
Daneshpooy, Mehdi
Kimyai, Soodabeh
Alizadeh Oskoee, Parnian
Rezaei, Yashar
author_facet Abed Kahnamouei, Mehdi
Gholizadeh, Sarah
Rikhtegaran, Sahand
Daneshpooy, Mehdi
Kimyai, Soodabeh
Alizadeh Oskoee, Parnian
Rezaei, Yashar
author_sort Abed Kahnamouei, Mehdi
collection PubMed
description Background. The aim of this study was to investigate the effect of preheating methacrylate- and silorane-based composite resins on their color stability up to 40 times at 55‒60°C. Methods. Seventy-six methacrylate and silorane-based composite resin samples, with a diameter of 10 mm and a height of 2 mm, were divided into 4 groups (n=19). After the samples were prepared, their color parameters were determined using a reflective spectrophotometer. The composite resin samples were separately stored in a solution of tea for 40 consecutive days. Then the samples underwent a color determination procedure again using a spectrophotometer and color changes were recorded. Finally two-way ANOVA was used to study the effect of composite temperature on its staining (P<0.05). Independent-samples t-test was used to evaluate changes in conversion rates of preheated composite resin samples compared to non-heated samples at P=0.005 and P=0.029 for silorane-based and Z250 composite resin samples, respectively. Results. Both composite resin type (P=0.014) and preheating (P<0.001) had significant effects on ΔE. Conclusion. Repeated preheating of methacrylate- and silorane-based composite resin samples, up to 55‒60°C for 40 rounds, resulted in more color changes compared with unheated composite resin samples. After storage in a solution of tea the color change rate in the composite resin samples of silorane-based was higher than the Z250 composite resin samples.
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spelling pubmed-57689542018-01-19 Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins Abed Kahnamouei, Mehdi Gholizadeh, Sarah Rikhtegaran, Sahand Daneshpooy, Mehdi Kimyai, Soodabeh Alizadeh Oskoee, Parnian Rezaei, Yashar J Dent Res Dent Clin Dent Prospects Original Article Background. The aim of this study was to investigate the effect of preheating methacrylate- and silorane-based composite resins on their color stability up to 40 times at 55‒60°C. Methods. Seventy-six methacrylate and silorane-based composite resin samples, with a diameter of 10 mm and a height of 2 mm, were divided into 4 groups (n=19). After the samples were prepared, their color parameters were determined using a reflective spectrophotometer. The composite resin samples were separately stored in a solution of tea for 40 consecutive days. Then the samples underwent a color determination procedure again using a spectrophotometer and color changes were recorded. Finally two-way ANOVA was used to study the effect of composite temperature on its staining (P<0.05). Independent-samples t-test was used to evaluate changes in conversion rates of preheated composite resin samples compared to non-heated samples at P=0.005 and P=0.029 for silorane-based and Z250 composite resin samples, respectively. Results. Both composite resin type (P=0.014) and preheating (P<0.001) had significant effects on ΔE. Conclusion. Repeated preheating of methacrylate- and silorane-based composite resin samples, up to 55‒60°C for 40 rounds, resulted in more color changes compared with unheated composite resin samples. After storage in a solution of tea the color change rate in the composite resin samples of silorane-based was higher than the Z250 composite resin samples. Tabriz University of Medical Sciences 2017 2017-12-13 /pmc/articles/PMC5768954/ /pubmed/29354248 http://dx.doi.org/10.15171/joddd.2017.039 Text en © 2017 Gholizadeh et al. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article published and distributed by Tabriz University of Medical Sciences under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Abed Kahnamouei, Mehdi
Gholizadeh, Sarah
Rikhtegaran, Sahand
Daneshpooy, Mehdi
Kimyai, Soodabeh
Alizadeh Oskoee, Parnian
Rezaei, Yashar
Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins
title Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins
title_full Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins
title_fullStr Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins
title_full_unstemmed Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins
title_short Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins
title_sort effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5768954/
https://www.ncbi.nlm.nih.gov/pubmed/29354248
http://dx.doi.org/10.15171/joddd.2017.039
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