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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, antimicrobial, and biological properties of White-MTAFlow

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Pelepenko, Lauter E. [1] ; Saavedra, Flavia [1] ; Antunes, Thiago B. M. [1] ; Bombarda, Gabriela F. [1] ; Gomes, Brenda P. F. A. [1] ; Zaia, Alexandre A. [1] ; Camilleri, Josette [2] ; Marciano, Marina A. [1]
Total Authors: 8
[1] Univ Estadual Campinas, Sch Dent Piracicaba, Dept Restorat Dent, Av Limeira 901, BR-13414903 Piracicaba, SP - Brazil
[2] Univ Birmingham, Coll Med Sci, Dent Sch, Birmingham, W Midlands - England
Total Affiliations: 2
Document type: Journal article
Web of Science Citations: 0

Objectives To evaluate a new material containing tantalum oxide as an alternative radiopacifier, and a water-based gel for hydration, in comparison with two calcium silicate-based cement: ProRoot MTA and Biodentine. Materials and methods ProRoot MTA (Dentsply), Biodentine (Septodont), and a new hydraulic calcium silicate cement White-MTAFlow (Ultradent) (in `thin' consistency) were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). The interaction with dentin was also assessed using SEM and EDS. Physical and chemical properties radiopacity, setting time, linear flow, volumetric central filling, and lateral flow, pH, and volume change were investigated together with the color luminosity (L) and color change (Delta E). The agar diffusion and direct contact antimicrobial activity, and methylthiazolyldiphenyl-tetrazolium-bromide (MTT) cytotoxicity using human fibroblast cells were also evaluated. Data were statistically analyzed at a 5% significance level. Results All materials were composed of tricalcium and dicalcium silicate but had different radiopacifiers, and calcium hydroxide (portlandite) deposition was detected in XRD analysis. White-MTAFlow exhibited radiopacity values in accordance with ISO standard, and the longest setting time. The water-based gel provided the highest linear flow, a comparable cavity central filling, and the highest groove-lateral flow in the volumetric flow analysis. White-MTAFlow exhibited an alkalinity reduction, and Biodentine, a progressive increase of pH values after 28 days. However, similar volume loss for White-MTAFlow was assessed in comparison to Biodentine after the 28-day immersion. White-MTAFlow showed the highest L value (91.5), and ProRoot MTA the lowest (78.1) due to dentin staining caused by bismuth migration. None of the materials exhibited inhibition halos against the tested bacteria, and similar turbidity values were obtained after 48 h in direct contact withE. faecalis, indicating an upregulation to bacterial growth. White-MTAFlow showed MTT cytocompatibility similarly to the control group. Conclusions White-MTAFlow in `thin' consistency presents comparable physicochemical, biological, and antimicrobial properties to ProRoot MTA and Biodentine, and does not cause color alteration in dentin. (AU)

FAPESP's process: 18/06515-6 - Chemical and structural characterization of high-plasticity reparative cements
Grantee:Gabriela Fernanda Bombarda
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 18/06903-6 - Evaluation of antimicrobial properties of high-plasticity reparative cements
Grantee:Daniel Marioti Secchieri
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 17/05096-7 - Evaluation of physical, chemical and antibacterial of a novel high-plasticity repair cement
Grantee:Marina Angélica Marciano da Silva
Support type: Regular Research Grants