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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.)

Radiopacity, pH and antimicrobial activity of Portland cement associated with micro- and nanoparticles of zirconium oxide and niobium oxide

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Guerreiro Tanomaru, Juliane Maria [1] ; Storto, Inara [1] ; da Silva, Guilherme Ferreira [1] ; Bosso, Roberta [1] ; Costa, Bernardo Cesar [1] ; Basso Bernardi, Maria Ines [2] ; Tanomaru-Filho, Mario [1]
Total Authors: 7
[1] UNESP, Araraquara Dent Sch, Dept Restorat Dent, BR-14801385 Araraquara, SP - Brazil
[2] Univ Sao Paulo, Sao Carlos Phys Inst, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: DENTAL MATERIALS JOURNAL; v. 33, n. 4, p. 466-470, AUG 2014.
Web of Science Citations: 9

The aim of this study was to evaluate some properties of the calcium silicate materials Mineral Trioxide Aggregate (MTA) and Portland cement (PC) with microparticulated (micro) and nanoparticulated (nano) zirconium oxide (ZrO2) or niobium oxide (Nb2O5). The experimental materials: White PC (PC), MTA-Angelus (R) (MTA), PC+ZrO(2)micro, PC+ZrO(2)nano, PC+Nb(2)O(5)micro and PC+Nb(2)O(5)nano were submitted to radiopacity and pH evaluations. Furthermore, the antimicrobial activity against different microorganisms was assessed by agar diffusion test. MTA presented higher radiopacity than other materials. However, all materials except PC presented higher radiopacity than recommended by ISO/ADA. MTA promoted higher pH values in all analyzed periods (p <= 0.05). At the initial periods, PC and PC+ZrO(2)micro showed pH similar to MTA. All materials showed antimicrobial activity against the evaluated microorganisms. In conclusion, ZrO2 and Nb2O5 could be alternative radiopacifiers to be added to calcium silicate materials. (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: 10/10769-1 - Physical, chemical, mechanical and biological properties evaluation of MTA and Portland cement associated with micro and nanoparticulate radiopacifiers
Grantee:Mario Tanomaru Filho
Support Opportunities: Regular Research Grants