Influence of different power densities during polymerization on the color of composite resins
ABSTRACT This study evaluated the influence of different levels of power density on resin polymerization in the staining of composite resins. Thirty-six specimens were made with composite resin (Z350 3M ESPE) with cylindrical Teflon matrix (8 mm X 1 mm). The light curing was performed with different degrees of power density for each group (n=12): 300mW/cm², 700mW/cm² e 1000mW/cm². Afterwards, the specimens had their color checked, with the help of a spectrophotometer and immersed in coffee solution during 7 days. After, a new measuring was done (CIEL*a*b* color system). Results showed, for Δa, only G1000 group obtained a significantly lower value, and the same result was found in the evaluation of Δb. For ΔE and ΔL, no significant differences were found between groups. It is concluded that, low and medium power density entails more reddish and bluish composite resin, while the specimens submitted to high power density and then immersed in coffee did not present color change in a short term.
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Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
2021
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oai:scielo:S1517-707620210004003382021-12-20Influence of different power densities during polymerization on the color of composite resinsSantos,Brunelly Cardoso de JesusMoreira,Jefferson ChavesNascimento,Yasmin Alves doRocha,Daniel Maranha daMendonça,Adriano Augusto Melo deOliveira,Lycia Gardenia dos SantosBresciani,EduardoRepeke,Daiana Conceição BrollNahsan,Flavia Pardo Salata Composite resin. Staining Light curing ABSTRACT This study evaluated the influence of different levels of power density on resin polymerization in the staining of composite resins. Thirty-six specimens were made with composite resin (Z350 3M ESPE) with cylindrical Teflon matrix (8 mm X 1 mm). The light curing was performed with different degrees of power density for each group (n=12): 300mW/cm², 700mW/cm² e 1000mW/cm². Afterwards, the specimens had their color checked, with the help of a spectrophotometer and immersed in coffee solution during 7 days. After, a new measuring was done (CIEL*a*b* color system). Results showed, for Δa, only G1000 group obtained a significantly lower value, and the same result was found in the evaluation of Δb. For ΔE and ΔL, no significant differences were found between groups. It is concluded that, low and medium power density entails more reddish and bluish composite resin, while the specimens submitted to high power density and then immersed in coffee did not present color change in a short term.info:eu-repo/semantics/openAccessLaboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH2Matéria (Rio de Janeiro) v.26 n.4 20212021-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000400338en10.1590/s1517-707620210004.1399 |
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Santos,Brunelly Cardoso de Jesus Moreira,Jefferson Chaves Nascimento,Yasmin Alves do Rocha,Daniel Maranha da Mendonça,Adriano Augusto Melo de Oliveira,Lycia Gardenia dos Santos Bresciani,Eduardo Repeke,Daiana Conceição Broll Nahsan,Flavia Pardo Salata |
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Santos,Brunelly Cardoso de Jesus Moreira,Jefferson Chaves Nascimento,Yasmin Alves do Rocha,Daniel Maranha da Mendonça,Adriano Augusto Melo de Oliveira,Lycia Gardenia dos Santos Bresciani,Eduardo Repeke,Daiana Conceição Broll Nahsan,Flavia Pardo Salata Influence of different power densities during polymerization on the color of composite resins |
author_facet |
Santos,Brunelly Cardoso de Jesus Moreira,Jefferson Chaves Nascimento,Yasmin Alves do Rocha,Daniel Maranha da Mendonça,Adriano Augusto Melo de Oliveira,Lycia Gardenia dos Santos Bresciani,Eduardo Repeke,Daiana Conceição Broll Nahsan,Flavia Pardo Salata |
author_sort |
Santos,Brunelly Cardoso de Jesus |
title |
Influence of different power densities during polymerization on the color of composite resins |
title_short |
Influence of different power densities during polymerization on the color of composite resins |
title_full |
Influence of different power densities during polymerization on the color of composite resins |
title_fullStr |
Influence of different power densities during polymerization on the color of composite resins |
title_full_unstemmed |
Influence of different power densities during polymerization on the color of composite resins |
title_sort |
influence of different power densities during polymerization on the color of composite resins |
description |
ABSTRACT This study evaluated the influence of different levels of power density on resin polymerization in the staining of composite resins. Thirty-six specimens were made with composite resin (Z350 3M ESPE) with cylindrical Teflon matrix (8 mm X 1 mm). The light curing was performed with different degrees of power density for each group (n=12): 300mW/cm², 700mW/cm² e 1000mW/cm². Afterwards, the specimens had their color checked, with the help of a spectrophotometer and immersed in coffee solution during 7 days. After, a new measuring was done (CIEL*a*b* color system). Results showed, for Δa, only G1000 group obtained a significantly lower value, and the same result was found in the evaluation of Δb. For ΔE and ΔL, no significant differences were found between groups. It is concluded that, low and medium power density entails more reddish and bluish composite resin, while the specimens submitted to high power density and then immersed in coffee did not present color change in a short term. |
publisher |
Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro |
publishDate |
2021 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000400338 |
work_keys_str_mv |
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1756424670358274048 |