| Revista: | Materials research |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312951 |
| ISSN: | 1516-1439 |
| Autores: | Correr, Americo Bortolazzo1 Sinhoreti, Mario Alexandre Coelho Correr-Sobrinho, Lourenco Tango, Rubens Nisie Consani, Simonides Schneider, Luis Felipe Jochins |
| Instituciones: | 1Universidade Estadual de Campinas, Escola de Odontologia, Piracicaba, Sao Paulo. Brasil |
| Año: | 2006 |
| Periodo: | Jul-Sep |
| Volumen: | 9 |
| Número: | 3 |
| Paginación: | 275-280 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Experimental |
| Resumen en inglés | A comparison was made of the hardness of Z250 and Esthet-X composites light cured with different light sources. Cavities (3 mm diameter x 6 mm deep) were prepared in 240 bovine incisors. The composite was bulk inserted and light-cured using halogen light, LED or xenon plasma arc (PAC) with different irradiances and exposure times, maintaining the same energy density. The specimens were stored in an incubator at 37 °C for 24 hours prior to sectioning for hardness measurements. Three measurements were taken at each depth: surface, 1, 2, 3, 4 and 5 mm. The data were analyzed by ANOVA and Tukey's test (p < 0.05). No statistically significant differences were found for LED up to 2 mm, for PAC up to 3 mm, and for halogen light up to 5 mm. Photoactivation with intermediate power density and exposure time resulted in the highest Knoop hardness values |
| Disciplinas: | Ingeniería, Medicina, Química |
| Palabras clave: | Ingeniería de materiales, Odontología, Química de polímeros, Resinas compuestas, Propiedades mecánicas, Dureza |
| Keyword: | Engineering, Medicine, Chemistry, Materials engineering, Dentistry, Polymer chemistry, Composite resins, Mechanical properties, Hardness |
| Texto completo: | Texto completo (Ver HTML) |
