Journal of Nanomaterials / 2012 / Article / Tab 2

Research Article

In Vitro Biocompatibility of Endodontic Sealers Incorporating Antibacterial Nanoparticles

Table 2

Summary of atomic percentage values of elements determined by XPS analysis and DLS measurements.

Tested materialAtomic concentration %/Mass concentration % DLS Analysis
I 3dO 1sC 1sSi 2p

AH Plus21.79/21.8559.08/44.4819.13/33.67
AH Plus + 2% QPEI0.08/0.6421.17/21.4661.09/46.4817.66/31.42

AHPlus with and without added QPEI nanoparticles.
aQPEI nanoparticle presence in the modified sealers was estimated using X-ray photoelectron spectroscopy; using Kratos Axis Ultra spectrometer (Kratos Analytical Ltd., Manchester, UK), using Al K 𝛼 monochromatic radiation X-ray source (1,486.7 eV). AH plus discs incorporating 0% or 2% wt/wt were prepared and left to dry in the incubator for 1 week.
bSupernatant of AHPlus with and without QPEI nanoparticles was determined using dynamic light scattering analyzer (Zetasizer Nano-S, Malvernd); samples ( 𝑛 = 8 ) were incubated for 1 week; supernatant was collected and tested—no particles.