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

2017; Elsevier BV; Volume: 43; Issue: 10 Linguagem: Inglês

10.1016/j.joen.2017.05.005

1878-3554

Bruno Martini Guimarães, Rodrigo Ricci Vivan, Bruno Piazza, Murilo Priori Alcalde, Clóvis Monteiro Bramante, Marco Antônio Húngaro Duarte,

Dental Radiography and Imaging

Highlights•Chemical-physical properties and apatite-forming ability of MTA Flow were investigated in comparison with MTA Angelus.•MTA Angelus showed statistically higher radiopacity values (P < .05).•Both materials showed the ability to nucleate calcium phosphate on their surface after 28 days in Hank's balanced salt solution.•MTA Flow showed remarkable alkalinizing capability and low solubility.AbstractIntroductionThis 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).MethodsMTA 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 ImageJ 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 (HBSS). The data were analyzed using 2-way analysis of variance with the Student-Newman-Keuls test (P < .05).ResultsMTA 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.ConclusionsMTA 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.