Influence of photo-activation source on enamel demineralization around restorative materials
This study evaluated the effects of the photoactivation source and restorative material on the development of caries-like lesions on human enamel after an in vitro pH challenge. Enamel cavities were prepared in 36 blocks, which were assigned to two groups according to the restorative material: resin-modified glass ionomer (RMGI) and composite resin (CR). Samples were exposed to quartz-tungsten-halogen lamp, argon-ion laser, or light-emitting diode (n = 6). The Knoop microhardness (KHN) values of the top surface of all materials were evaluated. Restored enamel blocks were thermocycled and subjected to 10 demineralization-remineralization cycles at 37°C. KHN analysis of the superficial enamel was performed by four indentations located 100 mm from the restoration margin. The material KHN was not affected by the photoactivation source. No significant difference in KHN was noted between CR and RMGI. The enamel surface around RMGI exhibited a higher KHN (272.8 KHN) than the enamel around CR (93.3 KHN), regardless of the photoactivation source. Enamel demineralization around the dental restoration was not influenced by the photoactivation source. Less enamel demineralization was observed around the RMGI than around the CR restoration.
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Sociedade Brasileira de Pesquisa Odontológica - SBPqO
2013
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oai:scielo:S1806-832420130003002862013-05-28Influence of photo-activation source on enamel demineralization around restorative materialsFerla,Juliana de OliveiraRodrigues,José AugustoArrais,César Augusto GalvãoAranha,Ana Cecília CorreaCassoni,Alessandra Glass Ionomer Cement Composite Resins Tooth Demineralization This study evaluated the effects of the photoactivation source and restorative material on the development of caries-like lesions on human enamel after an in vitro pH challenge. Enamel cavities were prepared in 36 blocks, which were assigned to two groups according to the restorative material: resin-modified glass ionomer (RMGI) and composite resin (CR). Samples were exposed to quartz-tungsten-halogen lamp, argon-ion laser, or light-emitting diode (n = 6). The Knoop microhardness (KHN) values of the top surface of all materials were evaluated. Restored enamel blocks were thermocycled and subjected to 10 demineralization-remineralization cycles at 37°C. KHN analysis of the superficial enamel was performed by four indentations located 100 mm from the restoration margin. The material KHN was not affected by the photoactivation source. No significant difference in KHN was noted between CR and RMGI. The enamel surface around RMGI exhibited a higher KHN (272.8 KHN) than the enamel around CR (93.3 KHN), regardless of the photoactivation source. Enamel demineralization around the dental restoration was not influenced by the photoactivation source. Less enamel demineralization was observed around the RMGI than around the CR restoration.info:eu-repo/semantics/openAccessSociedade Brasileira de Pesquisa Odontológica - SBPqOBrazilian Oral Research v.27 n.3 20132013-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242013000300286en10.1590/S1806-83242013005000015 |
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Ferla,Juliana de Oliveira Rodrigues,José Augusto Arrais,César Augusto Galvão Aranha,Ana Cecília Correa Cassoni,Alessandra |
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Ferla,Juliana de Oliveira Rodrigues,José Augusto Arrais,César Augusto Galvão Aranha,Ana Cecília Correa Cassoni,Alessandra Influence of photo-activation source on enamel demineralization around restorative materials |
author_facet |
Ferla,Juliana de Oliveira Rodrigues,José Augusto Arrais,César Augusto Galvão Aranha,Ana Cecília Correa Cassoni,Alessandra |
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Ferla,Juliana de Oliveira |
title |
Influence of photo-activation source on enamel demineralization around restorative materials |
title_short |
Influence of photo-activation source on enamel demineralization around restorative materials |
title_full |
Influence of photo-activation source on enamel demineralization around restorative materials |
title_fullStr |
Influence of photo-activation source on enamel demineralization around restorative materials |
title_full_unstemmed |
Influence of photo-activation source on enamel demineralization around restorative materials |
title_sort |
influence of photo-activation source on enamel demineralization around restorative materials |
description |
This study evaluated the effects of the photoactivation source and restorative material on the development of caries-like lesions on human enamel after an in vitro pH challenge. Enamel cavities were prepared in 36 blocks, which were assigned to two groups according to the restorative material: resin-modified glass ionomer (RMGI) and composite resin (CR). Samples were exposed to quartz-tungsten-halogen lamp, argon-ion laser, or light-emitting diode (n = 6). The Knoop microhardness (KHN) values of the top surface of all materials were evaluated. Restored enamel blocks were thermocycled and subjected to 10 demineralization-remineralization cycles at 37°C. KHN analysis of the superficial enamel was performed by four indentations located 100 mm from the restoration margin. The material KHN was not affected by the photoactivation source. No significant difference in KHN was noted between CR and RMGI. The enamel surface around RMGI exhibited a higher KHN (272.8 KHN) than the enamel around CR (93.3 KHN), regardless of the photoactivation source. Enamel demineralization around the dental restoration was not influenced by the photoactivation source. Less enamel demineralization was observed around the RMGI than around the CR restoration. |
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Sociedade Brasileira de Pesquisa Odontológica - SBPqO |
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2013 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242013000300286 |
work_keys_str_mv |
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