| Autor: |
Di Francescantonio, Marina, Rocha Pacheco, Rafael, Rodrigues Aguiar, Thaiane, Cidreira Boaro, Letícia Cristina, Ruggiero Braga, Roberto, Luis Martins, Adriano, Giannini, Marcelo |
| Předmět: |
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| Zdroj: |
Journal of Clinical Dentistry & Research; Jan-Mar2016, Vol. 13 Issue 1, p49-58, 10p, 4 Black and White Photographs, 1 Diagram, 1 Chart, 1 Graph |
| Abstrakt: |
Objective: The aim of this study was to characterize the chemical elements and morphology of filler particles of conventional and low-shrinkage composite resins. The main components were identified by means of energy-dispersive X-ray spectroscopy (EDX) microanalysis; whereas filler particles were analyzed morphologically by scanning electron microscopy (SEM). Methods: Four composite resins were studied: two conventional ones (Heliomolar and Tetric N-Ceram, Ivoclar VivadentTM) and two low-shrinkage ones (Aelite LS, BiscoTN; and Filtek Silorane, 3M ESPETM). The material (five samples of each resin) was immersed in organic solvents to eliminate the organic phase and was assessed by SEM and EDX. Results: Although EDX measurements showed a high content of silicon in all samples, there were differences in the elemental composition. Aelite LS composite resin contained spherical and irregular particles, whereas the other composites contained only irregularly shaped filler particles. Heliomolar composite resin had the highest particle size. Conclusion: All composite resins contained silicon, but the other components were also found. Resins differed in terms of filler particle size and morphology. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
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