Conversion degrees of resin composites using different light sources

Conversion degrees of resin composites using different light sources

The objective of this study was to compare the conversion degree of six different composite materials (Filtek Z 250, Filtek P60, Spectrum TPH, Pertac II, Clearfil AP-X, and Clearfil Photo Posterior) using three different light sources (blue light-emitting diode [LED], plasma arc curing [PAC], and co...

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Veröffentlicht in:European journal of dentistry 2013-01, Vol.7 (1), p.102-109
Hauptverfasser: Ozturk, Bora, Cobanoglu, Nevin, Cetin, Ali Rıza, Gunduz, Beniz
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container_title European journal of dentistry
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creator Ozturk, Bora
Cobanoglu, Nevin
Cetin, Ali Rıza
Gunduz, Beniz
description The objective of this study was to compare the conversion degree of six different composite materials (Filtek Z 250, Filtek P60, Spectrum TPH, Pertac II, Clearfil AP-X, and Clearfil Photo Posterior) using three different light sources (blue light-emitting diode [LED], plasma arc curing [PAC], and conventional halogen lamp [QTH]). Composites were placed in a 2 mm thick and 5 mm diameter Teflon molds and light cured from the top using three methods: LED for 40 s, PAC for 10 s, and QTH for 40 s. A Fourier Transform Infrared Spectroscopy (FTIR) was used to evaluate the degree of conversion (DC) (n=5). The results were analyzed with two-way analysis of variance and Tukey HSD test. DC was significantly influenced by two variables, light source and composite (P
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Composites were placed in a 2 mm thick and 5 mm diameter Teflon molds and light cured from the top using three methods: LED for 40 s, PAC for 10 s, and QTH for 40 s. A Fourier Transform Infrared Spectroscopy (FTIR) was used to evaluate the degree of conversion (DC) (n=5). The results were analyzed with two-way analysis of variance and Tukey HSD test. DC was significantly influenced by two variables, light source and composite (P&lt;.05). QTH revealed significantly higher DC values than LED (P&lt;.05). However, there were no significant differences between DC values of QTH and PAC or between DC values of LED and PAC (P&gt;.05). The highest DC was observed in the Z 250 composite specimens following photopolymerization with QTH (70%). The lowest DC was observed in Clearfil Photo Posterior composite specimens following photo-polymerization with LED (43%). The DC was found to be changing according to both light sources and composite materials used. Conventional light halogen (QTH) from light sources and Filtek Z 250 and Filtek P 60 among composite materials showed the most DC performance.</description><identifier>ISSN: 1305-7456</identifier><identifier>EISSN: 1305-7464</identifier><identifier>PMID: 23407765</identifier><language>eng</language><publisher>Germany: Dental Investigations Society</publisher><ispartof>European journal of dentistry, 2013-01, Vol.7 (1), p.102-109</ispartof><rights>Copyright 2013 European Journal of Dentistry. 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Composites were placed in a 2 mm thick and 5 mm diameter Teflon molds and light cured from the top using three methods: LED for 40 s, PAC for 10 s, and QTH for 40 s. A Fourier Transform Infrared Spectroscopy (FTIR) was used to evaluate the degree of conversion (DC) (n=5). The results were analyzed with two-way analysis of variance and Tukey HSD test. DC was significantly influenced by two variables, light source and composite (P&lt;.05). QTH revealed significantly higher DC values than LED (P&lt;.05). However, there were no significant differences between DC values of QTH and PAC or between DC values of LED and PAC (P&gt;.05). The highest DC was observed in the Z 250 composite specimens following photopolymerization with QTH (70%). The lowest DC was observed in Clearfil Photo Posterior composite specimens following photo-polymerization with LED (43%). The DC was found to be changing according to both light sources and composite materials used. 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Composites were placed in a 2 mm thick and 5 mm diameter Teflon molds and light cured from the top using three methods: LED for 40 s, PAC for 10 s, and QTH for 40 s. A Fourier Transform Infrared Spectroscopy (FTIR) was used to evaluate the degree of conversion (DC) (n=5). The results were analyzed with two-way analysis of variance and Tukey HSD test. DC was significantly influenced by two variables, light source and composite (P&lt;.05). QTH revealed significantly higher DC values than LED (P&lt;.05). However, there were no significant differences between DC values of QTH and PAC or between DC values of LED and PAC (P&gt;.05). The highest DC was observed in the Z 250 composite specimens following photopolymerization with QTH (70%). The lowest DC was observed in Clearfil Photo Posterior composite specimens following photo-polymerization with LED (43%). The DC was found to be changing according to both light sources and composite materials used. 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title Conversion degrees of resin composites using different light sources
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