Revista: | Materials research |
Base de datos: | PERIÓDICA |
Número de sistema: | 000312737 |
ISSN: | 1516-1439 |
Autors: | Obici, Andresa Carla1 Sinhoreti, Mario Alexandre Coelho Correr-Sobrinho, Lourenco Consani, Simonides Frollini, Elisabete2 |
Institucions: | 1Universidade Estadual de Campinas, Faculdade de Odontologia, Piracicaba, Sao Paulo. Brasil 2Universidade de Sao Paulo, Instituto de Quimica, Sao Carlos, Sao Paulo. Brasil |
Any: | 2004 |
Període: | Oct-Dic |
Volum: | 7 |
Número: | 4 |
Paginació: | 605-610 |
País: | Brasil |
Idioma: | Inglés |
Tipo de documento: | Nota breve o noticia |
Enfoque: | Experimental |
Resumen en inglés | The purpose of this study was to evaluate the degree of conversion (DC) of the Z250 composite, using six photo-activation methods, two storage periods and two preparation techniques of the FTIR specimens (n = 3). For the KBr pellet technique, the composite was placed into a metallic mold and photo-activated as follows: continuous light, exponential light, intermittent light, stepped light, PAC and LED. The measurements were made after 24 h and 20 days. For the resin film technique, approximately 0.07 g of the composite was pressed between two polyester strips, photo-activated as above described and analyzed. The DC was calculated by the standard technique and submitted to ANOVA and Tukey's test (alpha = 5%). Independently of the storage period and specimen preparation technique, there were no significant differences among photo-activation methods. No statistical difference was observed between the time periods used. The specimens analyzed under the KBr pellet technique presented higher DC values than those analyzed by the resin film technique |
Disciplines | Ingeniería, Medicina, Química |
Paraules clau: | Ingeniería de materiales, Odontología, Química industrial, Resinas compuestas, Fotoactivación, Espectroscopía |
Keyword: | Engineering, Medicine, Chemistry, Materials engineering, Dentistry, Industrial chemistry, Composite resins, Photoactivation, Spectroscopy |
Text complet: | Texto completo (Ver HTML) |