Wavelength of Experimental LEDS: Hardness, Elastic Modulus, Degree of Conversion and Temperature Rise of a Microhybrid Composite
The aim of this study was to evaluate the effect of different peak wavelengths (450nm, 468nm and 490nm) of experimental LEDs on hardness, elastic modulus, degree of conversion and temperature rise of a microhybrid resin composite – Venus® (Heraeus Kulzer). Hardness and elastic modulus were determine...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2015-04-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000200240&tlng=en |
| _version_ | 1828133366760734720 |
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| author | Ana Paula Bonilauri Ferreira Paulo César Soares Júnior Evelise Machado Souza Rodrigo Nunes Rached Sérgio Henrique Pezzin Sérgio Vieira |
| author_facet | Ana Paula Bonilauri Ferreira Paulo César Soares Júnior Evelise Machado Souza Rodrigo Nunes Rached Sérgio Henrique Pezzin Sérgio Vieira |
| author_sort | Ana Paula Bonilauri Ferreira |
| collection | DOAJ |
| description | The aim of this study was to evaluate the effect of different peak wavelengths (450nm, 468nm and 490nm) of experimental LEDs on hardness, elastic modulus, degree of conversion and temperature rise of a microhybrid resin composite – Venus® (Heraeus Kulzer). Hardness and elastic modulus were determined by nanoindentation technique (n=5), degree of conversion was measured by FTIR (n=5) and temperature rise was measured with a thermistor (n=30). Data were submitted to ANOVA and multiple comparisons tests (α=0.05). Mechanical properties and degree of conversion (p<0.001) were superior on the top surfaces of the specimens. 468nm showed the highest mechanical properties values. There was no statistical difference in the degree of conversion (p=0.51) and in temperature rise (p=0.06) among all LEDs. Hardness and elastic modulus were influenced by LED´s wavelength, whereas degree of conversion and temperature rise were not influenced. |
| first_indexed | 2024-04-11T17:18:23Z |
| format | Article |
| id | doaj.art-a844e1be747c4b8086d1e4285c7c6a8d |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-11T17:18:23Z |
| publishDate | 2015-04-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-a844e1be747c4b8086d1e4285c7c6a8d2022-12-22T04:12:35ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392015-04-0118224024410.1590/1516-1439.267514Wavelength of Experimental LEDS: Hardness, Elastic Modulus, Degree of Conversion and Temperature Rise of a Microhybrid CompositeAna Paula Bonilauri FerreiraPaulo César Soares JúniorEvelise Machado SouzaRodrigo Nunes RachedSérgio Henrique PezzinSérgio VieiraThe aim of this study was to evaluate the effect of different peak wavelengths (450nm, 468nm and 490nm) of experimental LEDs on hardness, elastic modulus, degree of conversion and temperature rise of a microhybrid resin composite – Venus® (Heraeus Kulzer). Hardness and elastic modulus were determined by nanoindentation technique (n=5), degree of conversion was measured by FTIR (n=5) and temperature rise was measured with a thermistor (n=30). Data were submitted to ANOVA and multiple comparisons tests (α=0.05). Mechanical properties and degree of conversion (p<0.001) were superior on the top surfaces of the specimens. 468nm showed the highest mechanical properties values. There was no statistical difference in the degree of conversion (p=0.51) and in temperature rise (p=0.06) among all LEDs. Hardness and elastic modulus were influenced by LED´s wavelength, whereas degree of conversion and temperature rise were not influenced.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000200240&tlng=enlaboratory researchcomposite resinmechanical propertiesdegree of conversiontemperature riseLEDwavelength |
| spellingShingle | Ana Paula Bonilauri Ferreira Paulo César Soares Júnior Evelise Machado Souza Rodrigo Nunes Rached Sérgio Henrique Pezzin Sérgio Vieira Wavelength of Experimental LEDS: Hardness, Elastic Modulus, Degree of Conversion and Temperature Rise of a Microhybrid Composite Materials Research laboratory research composite resin mechanical properties degree of conversion temperature rise LED wavelength |
| title | Wavelength of Experimental LEDS: Hardness, Elastic Modulus, Degree of Conversion and Temperature Rise of a Microhybrid Composite |
| title_full | Wavelength of Experimental LEDS: Hardness, Elastic Modulus, Degree of Conversion and Temperature Rise of a Microhybrid Composite |
| title_fullStr | Wavelength of Experimental LEDS: Hardness, Elastic Modulus, Degree of Conversion and Temperature Rise of a Microhybrid Composite |
| title_full_unstemmed | Wavelength of Experimental LEDS: Hardness, Elastic Modulus, Degree of Conversion and Temperature Rise of a Microhybrid Composite |
| title_short | Wavelength of Experimental LEDS: Hardness, Elastic Modulus, Degree of Conversion and Temperature Rise of a Microhybrid Composite |
| title_sort | wavelength of experimental leds hardness elastic modulus degree of conversion and temperature rise of a microhybrid composite |
| topic | laboratory research composite resin mechanical properties degree of conversion temperature rise LED wavelength |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000200240&tlng=en |
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