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Physicochemical properties of a calcium aluminate cement containing nanoparticles of zinc oxide
This study evaluated the effect of different nanoparticulated zinc oxide (nano-ZnO) and conventional-ZnO ratios on the physicochemical properties of calcium aluminate cement (CAC). The conventional-ZnO and nano-ZnO were added to the cement powder in the following proportions: G1 (20% conventional-Zn...
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Published in: | Restorative dentistry & endodontics 2023-02, Vol.48 (1), p.e3-e3 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | This study evaluated the effect of different nanoparticulated zinc oxide (nano-ZnO) and conventional-ZnO ratios on the physicochemical properties of calcium aluminate cement (CAC).
The conventional-ZnO and nano-ZnO were added to the cement powder in the following proportions: G1 (20% conventional-ZnO), G2 (15% conventional-ZnO + 5% nano-ZnO), G3 (12% conventional-ZnO + 3% nano-ZnO) and G4 (10% conventional-ZnO + 5% nano-ZnO). The radiopacity (R
), setting time (S
), dimensional change (D
), solubility (S
), compressive strength (C
), and pH were evaluated. The nano-ZnO and CAC containing conventional-ZnO were also assessed using scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. Radiopacity data were analyzed by the 1-way analysis of variance (ANOVA) and Bonferroni tests (
< 0.05). The data of the other properties were analyzed by the ANOVA, Tukey, and Fisher tests (
< 0.05).
The nano-ZnO and CAC containing conventional-ZnO powders presented particles with few impurities and nanometric and micrometric sizes, respectively. G1 had the highest R
mean value (
< 0.05). When compared to G1, groups containing nano-ZnO had a significant reduction in the S
(
< 0.05) and lower values of D
at 24 hours (
< 0.05). The C
was higher for G4, with a significant difference for the other groups (
< 0.05). The S
did not present significant differences among groups (
> 0.05).
The addition of nano-ZnO to CAC improved its dimensional change, setting time, and compressive strength, which may be promising for the clinical performance of this cement. |
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ISSN: | 2234-7658 2234-7666 |
DOI: | 10.5395/rde.2023.48.e3 |