Please use this identifier to cite or link to this item:
https://repositorio.ufrn.br/handle/123456789/21204| Title: | Degree of conversion of different composite resins photo-activated with light-emitting diode and argon ion laser |
| Authors: | Messias, A. M. Galvão, M. R. Boaventura, J. M. C. Jacomassi, D. P. Bernardi, M. I. B. Bagnato, Vanderlei Salvador Rastelli, A. N. S. Andrade, Marcelo Ferrarezi |
| Keywords: | composite resins;argon ion laser;LED;photopolymerization |
| Issue Date: | 2015 |
| Citation: | MESSIAS, A. M. et al. Degree of conversion of different composite resins photo-activated with light-emitting diode and argon ion laser. Laser Physics, v. 25, n. 2, p. 025601, 2015. |
| Portuguese Abstract: | 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. |
| URI: | https://repositorio.ufrn.br/jspui/handle/123456789/21204 |
| Appears in Collections: | CCS - DOD - Artigos publicados em periódicos |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.