Please use this identifier to cite or link to this item:
http://repositorio.unitau.br/jspui/handle/20.500.11874/1817
metadata.dc.type: | Artigo de Periódico |
Title: | Influence of the photoinitiator system and light photoactivation units on the degree of conversion of dental composites |
Authors: | Porto, Isabel Cristina Celerino de Moraes Soares, Luís Eduardo Silva Martin, Andressa Amado Gobbo, Vanessa Cavalli Liporoni, Priscila Christiane Suzy |
Abstract: | The aim of this study was to observe the infuence of two light polymerization units (LED or halogen light) on the degree of conversion (DC) of three dental composites with lighter shades and a different photoinitiator system. The top (T) and bottom (B) surfaces of 60 discs of composite resin (Filtek™ Supreme, Filtek™ Z250, Tetric™ Ceram Bleach) cured either by LED or by halogen lamp (HL) were studied using an FT-Raman spectrometer. The degree of conversion (DC) was evaluated by following the changes in the intensity of the methacrylate C=C stretching mode at 1640 cm-1. The calculated DC ranged from 54.2% (B) to 73.4% (T) and from 60.2% (B) to 76.6% (T) for the LED and HL, respectively. LED and halogen devices were able to produce an adequate DC for all the resins tested. |
metadata.dc.language: | Inglês |
metadata.dc.rights: | Acesso Aberto |
metadata.dc.rights.uri: | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
metadata.dc.identifier.doi: | 10.1590/S1806-83242010000400017 |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650590295&doi=10.1590%2fS1806-83242010000400017&partnerID=40&md5=22c58707cf2d4c5b115974c320f998b6 http://repositorio.unitau.br/jspui/handle/20.500.11874/1817 |
Issue Date: | 2010 |
Appears in Collections: | Artigos de Periódicos |
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2-s2.0-78650590295.pdf | 536.62 kB | Adobe PDF | View/Open |
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