Panavia F: the role of the primer

Abstract

This study evaluated the rate of polymerization(Rp) and degree of conversion(DC) of Panavia F when self-or dual- activated, and the material.The conversion reaction was monitored using real-time infrared spectroscopy witer an time infrares spactroscopy with an attenuated total reflectance device. The cement was mixed, put onto the device and irradiated for 20s ( dual - cured).A self - cured groups were evaluated after mixing ED Primer with the cement. The DC was monitored for 1h and the Rp was calculated. For the self-cured mode , the primer was shown to be essential for polymeratization of Pananvia only after approxymately 500s, with a final DC 50%, whereas a continows increase in conversion was observed for the group mixed with ED Primer is essential for proper polymerization of Panavia F; the cement becomes independent of the light when the primer is used.(J oral Sci 51, 255-259, 2009)