Physicochemical, antimicrobial, and biological properties of White-MTAFlow

Autor(es)

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: CLINICAL ORAL INVESTIGATIONS; v. 25, n. 2 AUG 2020.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 18/06515-6 - Caracterização química e estrutural de cimentos reparadores de alta plasticidade
• Beneficiário: Gabriela Fernanda Bombarda
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 18/06903-6 - Avaliação de propriedades antimicrobianas de cimentos reparadores de alta plasticidade
• Beneficiário: Daniel Marioti Secchieri
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 17/05096-7 - Avaliação das propriedades físicas, químicas e antimicrobianas de um novo cimento reparador de alta plasticidade
• Beneficiário: Marina Angélica Marciano da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular