ABSTRACT

Aims: To test the immediate and one day post-cure polymerization percentage of two bonding agents incorporated titanium oxide nanoparticles in comparison to the control (non-incorporated) bonding agents. Materials and Methods: 32 bonding samples in Potassium Bromide discs were prepared for Fourier transform infrared analysis (FTIR), and distributed as following, i.e., GA: 8 bonding samples of non-incorporated Ambar universal (Control), GB: 8 bonding samples of 4%-incorporated Ambar universal, GC: 8 bonding samples of non-incorporated G-Premio Bond universal (Control), GIV: Eight bonding samples of 4%-incorporated G-Premio Bond universal. Equal amount (45μL) of each bonding agent was placed on potassium bromide disc, the solvents was evaporated by a gentle air steam, and then a second potassium bromide disc was mounted over the first one and pressed softly to form a thin bonding film. Finally, the potassium bromide discs containing the bonding were placed in the demountable cell holder and mounted into the sample chamber of the spectrometer. FTIR spectra was then recorded for each bonding before, immediately after, and one day after polymerization to measure the polymerization percentage. Results: The study results showed significantly higher polymerization percentage values (i.e., Immediate and one day after polymerization) for the 4%-incorporated in comparison to the control groups for both bonding agents. G-Premio bond universal (i.e., both control and incorporated) revealed significantly higher polymerization percentage than Ambar universal. Conclusions: Incorporation of titanium dioxide nanoparticles at 4% into the universal bonding agents significantly increased their polymerization percentage in comparison to their control non-incorporated bonding agents.