Effect of radiant exposure and UV accelerated aging on physicochemical and mechanical properties of composite resins

Currently, there is no consensus in terms of defining the minimum radiant exposure values necessary for achieving adequate properties of composite resin. In addition, the long-term influence that radiant exposure has on the properties of composite resins is still questionable. Objective: The objecti...

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Guardado en:
Detalles Bibliográficos
Publicado: 2019
Materias:
Aging
Composite resins
Polymerization
Filtek Supreme
resin
resin cement
water
analysis of variance
chemistry
dental curing light
evaluation study
infrared spectroscopy
materials testing
phase transition
photochemistry
polymerization
radiation dose
radiation response
reference value
scanning electron microscopy
solubility
surface property
time factor
ultraviolet radiation
Analysis of Variance
Composite Resins
Curing Lights, Dental
Flexural Strength
Materials Testing
Microscopy, Electron, Scanning
Phase Transition
Photochemical Processes
Radiation Dosage
Reference Values
Solubility
Spectroscopy, Fourier Transform Infrared
Surface Properties
Time Factors
Ultraviolet Rays
Water
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16787757_v27_n_p_CuevasSuarez
http://hdl.handle.net/20.500.12110/paper_16787757_v27_n_p_CuevasSuarez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_16787757_v27_n_p_CuevasSuarez
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spelling paper:paper_16787757_v27_n_p_CuevasSuarez2023-06-08T16:26:31Z Effect of radiant exposure and UV accelerated aging on physicochemical and mechanical properties of composite resins Aging Composite resins Polymerization Filtek Supreme resin resin cement water analysis of variance chemistry dental curing light evaluation study infrared spectroscopy materials testing phase transition photochemistry polymerization radiation dose radiation response reference value scanning electron microscopy solubility surface property time factor ultraviolet radiation Analysis of Variance Composite Resins Curing Lights, Dental Flexural Strength Materials Testing Microscopy, Electron, Scanning Phase Transition Photochemical Processes Polymerization Radiation Dosage Reference Values Solubility Spectroscopy, Fourier Transform Infrared Surface Properties Time Factors Ultraviolet Rays Water Currently, there is no consensus in terms of defining the minimum radiant exposure values necessary for achieving adequate properties of composite resin. In addition, the long-term influence that radiant exposure has on the properties of composite resins is still questionable. Objective: The objective of this study was to evaluate the effect of radiant exposure and UV accelerated aging on the physico-chemical and mechanical properties of micro-hybrid and nanofilled composite resins. Material and Methods: A nanofilled (Filtek Supreme; 3M ESPE) and a micro-hybrid composite resin (Filtek Z250; 3M ESPE) were investigated under different radiant exposures (3.75, 9, and 24 J/cm2) and UV accelerated aging protocols (0, 500, 1000, and 1500 aging hours). The degree of conversion (DC), flexural strength (FS), modulus (M), water sorption (WS), and solubility (WL) were evaluated. The results obtained were analyzed using two-way ANOVA and Tukey’s test. Comparisons were performed using a significance level of a=0.05. Results: The DC, FS, and M were found to be significantly influenced by both radiant exposure and accelerated aging time. The DC and EM increased with radiant exposure in the no-aging group (0-hour aging) for both micro-hybrid and nanofilled composites, whereas no correlation was found after accelerated aging protocols. WS and WL of micro-hybrid and nanofilled composite resins were scarcely affected by radiant exposure (p>0.05), whereas they were significantly reduced by accelerated aging (p<0.001). Conclusions: Although increasing radiant exposure affected the degree of conversion and mechanical properties of micro-hybrid and nanofilled composites, no influence on the hydrolytic degradation of the material was observed. In contrast, UV accelerated aging affected both the physico-chemical and mechanical properties of the composites. © 2019, Bauru School of Dentistry, University of Sao Paulo. All rights reserved. 2019 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16787757_v27_n_p_CuevasSuarez http://hdl.handle.net/20.500.12110/paper_16787757_v27_n_p_CuevasSuarez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Aging
Composite resins
Polymerization
Filtek Supreme
resin
resin cement
water
analysis of variance
chemistry
dental curing light
evaluation study
infrared spectroscopy
materials testing
phase transition
photochemistry
polymerization
radiation dose
radiation response
reference value
scanning electron microscopy
solubility
surface property
time factor
ultraviolet radiation
Analysis of Variance
Composite Resins
Curing Lights, Dental
Flexural Strength
Materials Testing
Microscopy, Electron, Scanning
Phase Transition
Photochemical Processes
Polymerization
Radiation Dosage
Reference Values
Solubility
Spectroscopy, Fourier Transform Infrared
Surface Properties
Time Factors
Ultraviolet Rays
Water
spellingShingle Aging
Composite resins
Polymerization
Filtek Supreme
resin
resin cement
water
analysis of variance
chemistry
dental curing light
evaluation study
infrared spectroscopy
materials testing
phase transition
photochemistry
polymerization
radiation dose
radiation response
reference value
scanning electron microscopy
solubility
surface property
time factor
ultraviolet radiation
Analysis of Variance
Composite Resins
Curing Lights, Dental
Flexural Strength
Materials Testing
Microscopy, Electron, Scanning
Phase Transition
Photochemical Processes
Polymerization
Radiation Dosage
Reference Values
Solubility
Spectroscopy, Fourier Transform Infrared
Surface Properties
Time Factors
Ultraviolet Rays
Water
Effect of radiant exposure and UV accelerated aging on physicochemical and mechanical properties of composite resins
topic_facet Aging
Composite resins
Polymerization
Filtek Supreme
resin
resin cement
water
analysis of variance
chemistry
dental curing light
evaluation study
infrared spectroscopy
materials testing
phase transition
photochemistry
polymerization
radiation dose
radiation response
reference value
scanning electron microscopy
solubility
surface property
time factor
ultraviolet radiation
Analysis of Variance
Composite Resins
Curing Lights, Dental
Flexural Strength
Materials Testing
Microscopy, Electron, Scanning
Phase Transition
Photochemical Processes
Polymerization
Radiation Dosage
Reference Values
Solubility
Spectroscopy, Fourier Transform Infrared
Surface Properties
Time Factors
Ultraviolet Rays
Water
description Currently, there is no consensus in terms of defining the minimum radiant exposure values necessary for achieving adequate properties of composite resin. In addition, the long-term influence that radiant exposure has on the properties of composite resins is still questionable. Objective: The objective of this study was to evaluate the effect of radiant exposure and UV accelerated aging on the physico-chemical and mechanical properties of micro-hybrid and nanofilled composite resins. Material and Methods: A nanofilled (Filtek Supreme; 3M ESPE) and a micro-hybrid composite resin (Filtek Z250; 3M ESPE) were investigated under different radiant exposures (3.75, 9, and 24 J/cm2) and UV accelerated aging protocols (0, 500, 1000, and 1500 aging hours). The degree of conversion (DC), flexural strength (FS), modulus (M), water sorption (WS), and solubility (WL) were evaluated. The results obtained were analyzed using two-way ANOVA and Tukey’s test. Comparisons were performed using a significance level of a=0.05. Results: The DC, FS, and M were found to be significantly influenced by both radiant exposure and accelerated aging time. The DC and EM increased with radiant exposure in the no-aging group (0-hour aging) for both micro-hybrid and nanofilled composites, whereas no correlation was found after accelerated aging protocols. WS and WL of micro-hybrid and nanofilled composite resins were scarcely affected by radiant exposure (p>0.05), whereas they were significantly reduced by accelerated aging (p<0.001). Conclusions: Although increasing radiant exposure affected the degree of conversion and mechanical properties of micro-hybrid and nanofilled composites, no influence on the hydrolytic degradation of the material was observed. In contrast, UV accelerated aging affected both the physico-chemical and mechanical properties of the composites. © 2019, Bauru School of Dentistry, University of Sao Paulo. All rights reserved.
title Effect of radiant exposure and UV accelerated aging on physicochemical and mechanical properties of composite resins
title_short Effect of radiant exposure and UV accelerated aging on physicochemical and mechanical properties of composite resins
title_full Effect of radiant exposure and UV accelerated aging on physicochemical and mechanical properties of composite resins
title_fullStr Effect of radiant exposure and UV accelerated aging on physicochemical and mechanical properties of composite resins
title_full_unstemmed Effect of radiant exposure and UV accelerated aging on physicochemical and mechanical properties of composite resins
title_sort effect of radiant exposure and uv accelerated aging on physicochemical and mechanical properties of composite resins
publishDate 2019
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16787757_v27_n_p_CuevasSuarez
http://hdl.handle.net/20.500.12110/paper_16787757_v27_n_p_CuevasSuarez
_version_ 1768543486959681536

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