Physicochemical properties of a calcium aluminate cement containing nanoparticles of zinc oxide

da Rosa Amanda Freitas; Amaral Thuany Schmitz; Paz Dotto Maria Eduarda; Goulart Taynara Santos; Rossetto Hebert Luís; Bortoluzzi Eduardo Antunes; Teixeira Cleonice da Silveira; Garcia Lucas da Fonseca Roberti

doi:10.5395/rde.2023.48.e3

Physicochemical properties of a calcium aluminate cement containing nanoparticles of zinc oxide

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Type: Academic journal

Author: da Rosa Amanda Freitas (Department of Dentistry - Endodontics Division Health Sciences Center Federal University of Santa Catarina Florianópolis SC Brazil.) Amaral Thuany Schmitz (Department of Dentistry - Endodontics Division Health Sciences Center Federal University of Santa Catarina Florianópolis SC Brazil.)

Journal: The Korean Academy of Conservative Dentistry Restorative Dentistry and Endodontics Restorative Dentistry and Endodontics 제48권 제1호 KCI Accredited Journals

Published: 2023.2

Pages: 1 - 14 (14page)

DOI: 10.5395/rde.2023.48.e3

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Physicochemical properties of a calcium aluminate cement containing nanoparticles of zinc oxide

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Objectives 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). Materials and Methods 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 (Rad), setting time (Set), dimensional change (Dc), solubility (Sol), compressive strength (Cst), 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 (p < 0.05). The data of the other properties were analyzed by the ANOVA, Tukey, and Fisher tests (p < 0.05). Results The nano-ZnO and CAC containing conventional-ZnO powders presented particles with few impurities and nanometric and micrometric sizes, respectively. G1 had the highest Rad mean value (p < 0.05). When compared to G1, groups containing nano-ZnO had a significant reduction in the Set (p < 0.05) and lower values of Dc at 24 hours (p < 0.05). The Cst was higher for G4, with a significant difference for the other groups (p < 0.05). The Sol did not present significant differences among groups (p > 0.05). Conclusions 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.

#Dental cements #Nanoparticles #Physical and chemical properties #Zinc oxide

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da Rosa Amanda Freitas

Affiliation Department of Dentistry - Endodontics Division Health Sciences Center Federal University of Santa Catarina Florianópolis SC Brazil.