The effect of 4,4'-bis(N,N-diethylamino) benzophenone on the degree of conversion in liquid photopolymer for dental 3D printing

摘要: The purpose of this preliminary study was to investigate the effects adding 4,4'-bis(N,N-diethylamino) benzophenone (DEABP) as a co-initiator binary photoinitiating system (camphorquinone-amine) analyze on degree conversion (DC) light-cured resin for dental 3D printing.Cylindrical specimens (N=60, n=30 per group, o5 mm × 1 mm) were fabricated using bisphenol A glycerolate dimethacrylate (BisGMA) both with and without DEABP. freshly mixed resins exposed light in custom-made closed chamber nine light-emitting diode lamps (wavelength: 405 nm; power: 840 mW/cm(2)) polymerization at each incidence light-irradiation 10, 30, 60, 180, 300 seconds, while five time evaluated given irradiation point. Fourier-transform infrared (FTIR) spectroscopy used measure DC values resins. Two-way analysis variance Duncan post hoc test statistically significant differences between groups times (α=.05).In DEABP-containing resin, significantly higher all points (P<.001), also initial velocity faster than DEABP-free resin.The addition DEABP enhanced and, thus, could potentially become an efficient photoinitiator when combined camphorquinone-amine may be utilized more advanced photopolymerization printing.