Chemical-physical Properties and Apatite-forming Ability of Mineral Trioxide Aggregate Flow

Autor(es)

Guimaraes, Bruno Martini ^[1] ; Vivan, Rodrigo Ricci ^[1] ; Piazza, Bruno ^[1] ; Alcalde, Murilo Priori ^[1] ; Bramante, Clovis Monteiro ^[1] ; Hungaro Duarte, Marco Antonio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ENDODONTICS; v. 43, n. 10, p. 1692-1696, OCT 2017.
• Citações Web of Science: 5

Resumo

Introduction: This study aimed to analyze the chemical-physical properties, including pH, volumetric change, radiopacity, and apatite-forming ability in simulated body fluid, of a new tricalcium silicate material (MTA Flow; Ultradent Products Inc, South Jordan, UT). Methods: MTA Flow was tested in comparison with MTA Angelus (Angelus, Londrina, PR, Brazil). The pH of soaking water was tested up to 168 hours in deionized water. In the solubility test, the root-end fillings of 20 acrylic teeth were scanned twice by micro computed tomographic imaging before and after immersion in ultrapure water for 168 hours. In addition, using an aluminum step wedge, the radiopacity of each material was evaluated as recommended by international standards. The mean gray values of the test materials were measured using Image) software (National Institutes of Health, Bethesda, MD). The morphologic and chemical analyses of the material surface were performed using scanning electron microscopic energy dispersive X-ray spectroscopic analysis after 28 days in Hank's balanced salt solution (HMS). The data were analyzed using 2-way analysis of variance with the Student-Newman-Keuls test (P < .05). Results: MTA Flow showed similar alkalizing activity to that of MTA Angelus. In the solubility test, both materials presented lower values without statistical differences. Both materials showed a marked alkalinizing activity within 3 hours, which continued for 168 hours. MTA Angelus showed statistically higher radiopacity values (P < .05). All materials showed the ability to nucleate calcium phosphate on their surface after 28 days in HBSS. Conclusions: MTA Flow showed remarkable alkalinizing capability, low solubility, good radiopacity, and the ability to form calcium phosphate deposits after being soaked in simulated body fluid, showing values similar to those of MTA Angelus. (AU)

• Processo FAPESP: 13/07677-6 - Avaliação da capacidade seladora, alteração de cor e de componentes superficiais do MTA e cimento Portland associado à diferentes radiopacificadores e diferentes líquidos.
• Beneficiário: Bruno Martini Guimarães
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/25280-9 - Propriedades físico-químicas e bioatividade de cimentos de obturação retrógrada
• Beneficiário: Bruno Martini Guimarães
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado