| Literature DB >> 17320720 |
André Luís Faria e Silva1, Vanessa Gallego Arias, Luís Eduardo Silva Soares, Airton Abrahão Martin, Luís Roberto Marcondes Martins.
Abstract
This study evaluated the degree of conversion of one dual-cured resin cement when used to lute fiber posts with different translucencies. To measure the degree of conversion, polyvinylsiloxane molds were prepared to simulate root canals. The posts, Aestheti-Post or Light-Post, were cemented in these molds and, after photoactivation, were removed to obtain the resin cement spectrum by FT-Raman spectroscopy. Spectra were acquired at three depths: superficial, medium, and deep. For Light-Post, the resin cement at deep depth showed the lowest degree of conversion and no significant difference in degree of conversion was found between the other depths. For Aestheti-Post, the superficial depth presented a higher degree of conversion values than those in the medium and deep depths, which were not significantly different from each other. Light-Post exhibited a higher degree of conversion than that of Aestheti-Post only at medium depth. Light-Post effectiveness regarding the degree of conversion is dependent on the depth.Entities:
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Year: 2007 PMID： 17320720 DOI： 10.1016/j.joen.2006.11.015
Source DB: PubMed Journal: J Endod ISSN： 0099-2399 Impact factor: 4.171