Faria e Silva André Luís, Arias Vanessa Gallego, Soares Luís Eduardo Silva, Martin Airton Abrahão, Martins Luís Roberto Marcondes
Restorative Dentistry Department, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.
J Endod. 2007 Mar;33(3):303-5. doi: 10.1016/j.joen.2006.11.015. Epub 2007 Jan 22.
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.
本研究评估了一种双固化树脂水门汀在用于粘结不同透明度纤维桩时的固化转化率。为测量固化转化率，制备了聚乙烯基硅氧烷模具以模拟根管。将Aestheti-Post或Light-Post纤维桩粘结在这些模具中，光激活后取出，通过傅里叶变换拉曼光谱法获得树脂水门汀的光谱。在三个深度采集光谱：表面、中间和深部。对于Light-Post纤维桩，深部的树脂水门汀固化转化率最低，其他深度之间的固化转化率无显著差异。对于Aestheti-Post纤维桩，表面深度的固化转化率值高于中间和深部，中间和深部之间无显著差异。仅在中间深度，Light-Post纤维桩的固化转化率高于Aestheti-Post纤维桩。Light-Post纤维桩在固化转化率方面的有效性取决于深度。
