Relationship between the degree of conversion, solubility and salivary sorption of a hybrid and a nanofilled resin composite
| Autor: | Eduardo Moreira da Silva, Giselle Soares Almeida, Laiza Tatiana Poskus, José Guilherme Antunes Guimarães |
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| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Journal of Applied Oral Science, Vol 16, Iss 2, Pp 161-166 (2008) |
| Druh dokumentu: | article |
| ISSN: | 1678-7757 1678-7765 |
| DOI: | 10.1590/S1678-77572008000200015 |
| Popis: | This study analyzed the relationship between the degree of conversion (DC), solubility, and salivary sorption of a hybrid (Filtek P 60) and a nanofilled resin composite (Filtek Supreme), and evaluated the influence of the light-activation mode on these properties. Two light-activation modes were used: Conventional (C; 850 mW/cm² for 20 s) and Soft-start (SS; 100-1,000 mW/cm² for 10 s + 1,000 mW/cm² for 10 s). The DC (%) was evaluated by FT-Raman spectroscopy. The solubility and salivary sorption were measured after immersion in artificial saliva for 7 days. Data were analyzed by ANOVA and Student-Newman-Keuls' test and linear regression analysis (a = 0.05). The DC varied from 50.52% (nanofilled composite) to 57.15% (hybrid composite), and was influenced by the light-activation mode: C > SS. The solubility (0.45 mg/mm³) and salivary sorption (8.04 mg/mm³) of the nanofilled composite were greater than those of the hybrid composite (0.40 mg/mm³ / 6.87 mg/mm³), and were influenced by the light-activation mode: SS > C. Correlation was found between DC and solubility (r = - 0.89, p |
| Databáze: | Directory of Open Access Journals |
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