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Higher hydration performance and bioactive response of the new endodontic bioactive cement MTA HP repair compared with ProRoot MTA white and NeoMTA plus
Author(s) -
JiménezSánchez María del Carmen,
SeguraEgea Juan José,
DíazCuenca Aránzazu
Publication year - 2019
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.34304
Subject(s) - materials science , simulated body fluid , fourier transform infrared spectroscopy , scanning electron microscope , chemical engineering , cement , nuclear chemistry , composite material , chemistry , engineering
The aim of this study was to characterize the hydration performance and the bioactive response of the new bioactive endodontic cement MTA HP repair (HP), comparing its physicochemical parameters with those of ProRoot MTA White (Pro) and NeoMTA Plus (Neo). Un‐hydrated precursor materials were characterized by X‐ray fluorescence, laser diffraction, N 2 physisorption and field emission gun scanning electron microscopy (FEG‐SEM). Setting time was assessed according to ASTM specification C 266. Hydrated materials were analyzed by X‐ray diffraction, Fourier transform infrared spectroscopy (FT‐IR) and (FEG‐SEM). Bioactivity evaluation in vitro was carried out, by soaking processed cement disk in simulated body fluid (SBF) during 168 h. The cements surface was studied by FT‐IR, FEG‐SEM, and energy dispersive X‐ray. Release to the SBF media of ionic degradation products was monitored using inductively coupled plasma atomic emission spectroscopy. HP showed shorter initial setting time compared to Pro and Neo and produce a quick and effective bioactive response in vitro in terms of phosphate phase surface coating formation. This higher bioactive response for HP is correlated with increasing calcium aluminate content, increasing surface area of un‐hydrated powder precursor and the increasing release capacity of Si ionic products of the final hydrated product. The higher bioactive response of MTA HP repair highlights this material, as very interesting to further investigate its performance to improve the outcome of vital pulp therapy procedures. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 2109–2120, 2019.