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Article

Surface Studies on Glass Powders Used in Commercial Glass-Ionomer Dental Cements

1
Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
2
Department of Biomaterials and Experimental Dentistry, Poznan University of Medical Sciences, Bukowska 70, 60-812 Poznań, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Paola Paoli
Molecules 2021, 26(17), 5279; https://doi.org/10.3390/molecules26175279
Received: 26 July 2021 / Revised: 20 August 2021 / Accepted: 28 August 2021 / Published: 31 August 2021
The surface properties of three commercial ionomer glass powders, i.e., Fuji IX, Kavitan Plus and Chemadent G-J-W were studied. Samples were analyzed by X-ray fluorescence spectroscopy (XRF), and the density was determined by gas pycnometry. Morphology was studied using scanning electron microscopy (SEM) and laser diffraction (LD) technique, whereas low-temperature nitrogen sorption measurements determined textural parameters like specific surface area and pore volume. Thermal transformations in the materials studied were evaluated by thermogravimetric analysis (TGA), which was carried out in an inert atmosphere between 30 °C and 900 °C. XRF showed that Fuji IX and Kavitan Plus powders were strontium-based, whereas Chemadent G-J-W powder was calcium-based. Powders all had a wide range of particle sizes under SEM and LD measurements. Specific surface areas and pore volumes were in the range 1.42–2.73 m2/g and 0.0029 to 0.0083 cm3/g, respectively, whereas densities were in the range 2.6428–2.8362 g/cm3. Thermogravimetric analysis showed that the glass powders lost mass in a series of steps, with Fuji IX powder showing the highest number, some of which are attributed to the dehydration and decomposition of the polyacrylic acid present in this powder. Mass losses were more straightforward for the other two glasses. All three powders showed distinct losses at around 780 °C and 835 °C, suggesting that similar dehydration steps occur in all these glasses. Other steps, which differed between glass powders, are attributed to variations in states of water-binding on their surfaces. View Full-Text
Keywords: ionomer glasses; surface properties; density; particles morphology; thermogravimetric analysis ionomer glasses; surface properties; density; particles morphology; thermogravimetric analysis
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MDPI and ACS Style

Wawrzyńczak, A.; Kłos, J.; Nowak, I.; Czarnecka, B. Surface Studies on Glass Powders Used in Commercial Glass-Ionomer Dental Cements. Molecules 2021, 26, 5279. https://doi.org/10.3390/molecules26175279

AMA Style

Wawrzyńczak A, Kłos J, Nowak I, Czarnecka B. Surface Studies on Glass Powders Used in Commercial Glass-Ionomer Dental Cements. Molecules. 2021; 26(17):5279. https://doi.org/10.3390/molecules26175279

Chicago/Turabian Style

Wawrzyńczak, Agata, Jacek Kłos, Izabela Nowak, and Beata Czarnecka. 2021. "Surface Studies on Glass Powders Used in Commercial Glass-Ionomer Dental Cements" Molecules 26, no. 17: 5279. https://doi.org/10.3390/molecules26175279

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