Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Degree of conversion of different composite resins photo-activated with light-emitting diode and argon ion laser

Texto completo
Autor(es):
Messias, A. M. [1] ; Galvao, M. R. [1] ; Boaventura, J. M. C. [1] ; Jacomassi, D. P. [2] ; Bernardi, M. I. B. [3] ; Bagnato, V. S. [2] ; Rastelli, A. N. S. [1, 2] ; Andrade, M. F. [1]
Número total de Autores: 8
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista UNESP, Sch Dent, Dept Restorat Dent, Araraquara, SP - Brazil
[2] Univ Sao Paulo, Sao Carlos Phys Inst, Opt Grp, Biophoton Lab, Sao Carlos, SP - Brazil
[3] Univ Sao Paulo, Sao Carlos Phys Inst, Crystal Growth & Ceram Mat Grp, Sao Carlos, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Laser Physics; v. 25, n. 2 FEB 2015.
Citações Web of Science: 1
Resumo

This study evaluated the degree of conversion (DC%) of one experimental and different brands of composite resins light-cured by two light sources (one LED and one argon laser). The percentage of unreacted C = C was determined from the ratio of absorbance intensities of aliphatic C = C (peak at 1637 cm(-1)) against internal standards before and after curing: aromatic C-C (peak at 1610 cm(-1)) except for P90, where % C = C bonds was given for C-O-C (883 cm(-1)) and C-C (1257 cm(-1)). ANOVA and Tukey's test revealed no statistically significant difference among Z350 (67.17), Z250 (69.52) and experimental (66.61 +/- 2.03) with LED, just among them and Evolu-X (75.51) and P90 (32.05) that showed higher and lower DC%, respectively. For the argon laser, there were no differences among Z250 (70.67), Z350 (69.60), experimental (65.66) and Evolu-X (73, 37), however a significant difference was observed for P90 (36.80), which showed lowest DC%. The light sources showed similar DC%, however the main difference was observed regarding the composite resins. The lowest DC% was observed for the argon laser. P90 showed the lowest DC% for both light-curing sources. (AU)

Processo FAPESP: 10/08998-2 - Avaliação do grau de conversão de resinas compostas comerciais e experimental fotoativadas com LED e Laser de Argônio.
Beneficiário:Aion Mangino Messias
Linha de fomento: Bolsas no Brasil - Iniciação Científica