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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Physicochemical properties of calcium silicate cements associated with microparticulate and nanoparticulate radiopacifiers

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Bosso-Martelo, Roberta [1] ; Guerreiro-Tanomaru, Juliane M. [1] ; Viapiana, Raqueli [1] ; Berbert, Fabio Luiz C. [1] ; Hungaro Duarte, Marco Antonio [1] ; Tanomaru-Filho, Mario [1]
Total Authors: 6
[1] Araraquara Sch Dent, Araraquara, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: CLINICAL ORAL INVESTIGATIONS; v. 20, n. 1, p. 83-90, JAN 2016.
Web of Science Citations: 16

The objective of this paper was to evaluate the physicochemical properties of calcium silicate cements with different chemical compositions, associated with radiopacifying agents. Mineral trioxide aggregate (MTA) Angelus, calcium silicate cement with additives (CSC), and resinous calcium silicate cement (CSCR) were evaluated, with the addition of the following radiopacifiers: microparticles (micro) or nanoparticles (nano) of zirconium oxide (ZrO2), niobium oxide (Nb2O5), bismuth oxide (Bi2O3), or calcium tungstate (CaWO4). Setting time was evaluated using Gilmore needles. Solubility was determined after immersion in water. The pH and calcium ion release were analyzed after 3, 12, and 24 h and 7, 14, and 21 days. The data obtained were submitted to analysis of variance and Tukey's test, at a level of significance of 5 %. CSC + CaWO4 and CSCR + ZrO2 micro, Nb2O5 and CaWO4 presented results similar to MTA, with a shorter final setting time than the other associations. CSC and CSCR+ ZrO2 micro presented a higher degree of flow. All the cements evaluated presented low solubility. The materials presented alkaline pH and released calcium ions. ZrO2 micro radiopacifier may be considered a potential substitute for Bi2O3 when associated with CSC or CSCR. The proposed materials, especially when associated with ZrO2, are potential materials for use as alternatives to MTA. (AU)

FAPESP's process: 11/18239-4 - Physical-chemical, mechanical, biocompatibility and bioactivity evaluation of different formulations of Portland cement and associations with micro and nanoparticles radiopacifying agents
Grantee:Mario Tanomaru Filho
Support Opportunities: Regular Research Grants
FAPESP's process: 11/11292-7 - Evaluation of the physical-chemical, mechanical and biocompatibility properties of different types of Portland cement, and their association to micro and nanoparticle radiopacifiers
Grantee:Roberta Bosso Martelo
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)