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The International Journal of Prosthodontics



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Int J Prosthodont 30 (2017), No. 5     8. Sep. 2017
Int J Prosthodont 30 (2017), No. 5  (08.09.2017)

Page 471-473, doi:10.11607/ijp.5336, PubMed:28806428

Antibacterial Effect of Provisional Cements with Incorporated Polyethyleneimine Nanoparticles: An In Vivo Study
Ivgi, Inbal / Smidt, Ami / Zaltsman, Nathan / Ben-Gal, Gilad / Beyth, Nurit
Purpose: Provisional restorations exhibit various degrees of microleakage when cemented. Incorporation of quaternized polyethyleneimine nanoparticles (QPEI) into provisional cements may be effective against bacteria in vivo.
Materials and Methods: Nine polymethylmethacrylate provisional restorations in human volunteers were evaluated after cementation with and without QPEI nanoparticles. Bacterial load in the provisional cement was assessed after 1 week of cementation.
Results: The number of colonyforming units in the cement with QPEI was significantly lower (P < .05) than in the control cement.
Conclusion: The results of this in vivo study clearly indicate that provisional cement incorporating QPEI nanoparticles significantly reduces viable bacterial counts in the provisional cement in all patients.