@Article{OliveiraVSRCOFP:2018:ImRaCa,
author = "Oliveira, Ivone Regina de and Vieira, Gabriela do Vale and Santos,
Kennedy Wallace dos and Raniero, Leandro Jos{\'e} and
Castro-Raucci, Larissa Moreira and Oliveira, Paulo Tambasco de and
Fornari, Celso Israel and Pandolfell, Victor Carlos",
affiliation = "{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{Universidade de S{\~a}o Paulo (USP)} and {Universidade de
S{\~a}o Paulo (USP)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Universidade Federal de S{\~a}o Carlos
(UFSCar)}",
title = "Improving the radiopacity of calcium aluminate cement based
blends",
journal = "Materials Research",
year = "2018",
volume = "21",
number = "2",
pages = "e20170599",
keywords = "calcium aluminate blends, bioactivity, osteoblastic cell
viability, radiopacity.",
abstract = "The radiopacity of CAC-based compositions containing additives
(ZnO, Ag and Bi2O3) was evaluated by optical density measurements,
cold crushing strength, apparent porosity, pore size distribution,
in vitro apatite-formation ability (bioactivity) and cell
viability. The bioactivity was assessed via pH and calcium
concentration measurements in simulated body fluid (SBF) for
samples previously treated or not with sodium silicate (SS)
solution. The surface of the samples after treatment was analyzed
by scanning electron microscopy, energy dispersive X-ray analysis
and confocal Raman spectroscopy. Cell viability was evaluated by
MTT and alkaline phosphatase (ALP) activity Radiopacity results
confirmed that compositions containing ZnO-Ag (25:1 wt%) and
ZnO-Bi2O3 (15:10 wt%) presented suitable values of radiopacity (>
3 mmAl) The identification of calcium and mainly phosphorus by
EDX, highlighted the generation of an apatite-like layer on the
compositions' surface after immersion in SBF or SBF/SS. CAC-blend
containing 25 wt% ZnO, ZnO-Ag and ZnO-Bi2O3 presented slightly
lower cell viability compared to the positive control.",
doi = "10.1590/1980-5373-MR-2017-0599",
url = "http://dx.doi.org/10.1590/1980-5373-MR-2017-0599",
issn = "1516-1439",
language = "en",
targetfile = "oliveira_improving.pdf",
urlaccessdate = "27 abr. 2024"
}