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Influence of photo-activation source on enamel demineralization around restorative materials
Brazilian Oral Research; Ferla, Juliana de Oliveira; Rodrigues, José Augusto; Arrais, César Augusto Galvão; Aranha, Ana Cecília Correa; Cassoni, Alessandra.
Afiliação
  • Ferla, Juliana de Oliveira; Univ Guarulhos - UnG. Graduate Division. Department of Restorative Dentistry. Guarulhos. BR
  • Rodrigues, José Augusto; Univ Guarulhos - UnG. Graduate Division. Department of Restorative Dentistry. Guarulhos. BR
  • Arrais, César Augusto Galvão; Univ Guarulhos - UnG. Graduate Division. Department of Restorative Dentistry. Guarulhos. BR
  • Aranha, Ana Cecília Correa; Univ Guarulhos - UnG. Graduate Division. Department of Restorative Dentistry. Guarulhos. BR
  • Cassoni, Alessandra; Univ Guarulhos - UnG. Graduate Division. Department of Restorative Dentistry. Guarulhos. BR
Braz. oral res ; 27(3): 286-292, May-Jun/2013. tab, graf
Article em En | LILACS | ID: lil-673239
Biblioteca responsável: BR1.1
ABSTRACT
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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Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Assunto principal: Desmineralização do Dente / Resinas Compostas / Esmalte Dentário / Lâmpadas de Polimerização Dentária / Cimentos de Ionômeros de Vidro Tipo de estudo: Evaluation_studies Limite: Humans Idioma: En Revista: Braz. oral res Assunto da revista: ODONTOLOGIA Ano de publicação: 2013 Tipo de documento: Article / Project document País de afiliação: Brasil País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Assunto principal: Desmineralização do Dente / Resinas Compostas / Esmalte Dentário / Lâmpadas de Polimerização Dentária / Cimentos de Ionômeros de Vidro Tipo de estudo: Evaluation_studies Limite: Humans Idioma: En Revista: Braz. oral res Assunto da revista: ODONTOLOGIA Ano de publicação: 2013 Tipo de documento: Article / Project document País de afiliação: Brasil País de publicação: Brasil