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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.)

Color Stability, Radiopacity, and Chemical Characteristics of White Mineral Trioxide Aggregate Associated with 2 Different Vehicles in Contact with Blood

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Author(s):
Guimaraes, Bruno Martini [1] ; Tartari, Talita [1] ; Marciano, Marina Angelica [1] ; Vivan, Rodrigo Ricci [1] ; Lia Mondeli, Rafael Francisco [1] ; Camilleri, Josette [2] ; Hungaro Duarte, Marco Antonio [1]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, BR-17012901 Sao Paulo - Brazil
[2] Univ Malta, Fac Dent Surg, Dept Restorat Dent, Msida - Malta
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF ENDODONTICS; v. 41, n. 6, p. 947-952, JUN 2015.
Web of Science Citations: 12
Abstract

Introduction: Discoloration of mineral trioxide aggregate (MTA) can be exacerbated by the interaction of the cement with body fluids such as blood. This study aimed to analyze the color alteration, chemical characteristics, and radiopacity of MTA manipulated with 2 different vehicles after immersion in blood or distilled water (DW). Methods: MTA mixed with 100% DW or 80% DW/20% propylene glycol (PG) as vehicles were placed into rubber rings and incubated at 37 degrees C and 100% relative humidity until set. Color assessment and scanning electron microscopy/energy-dispersive spectroscopy analysis were performed after setting and repeated after 7, 15, and 30 days after immersion in blood and DW. Statistical analysis for color alteration and radiopacity was performed using nonparametric Kruskal-Wallis and Dunn tests (P < .05). Results: When 80% DW/20% PG was used as the vehicle, significantly lower color alterations were observed for all time periods compared with 100% DW when immersed in blood (P < .05). All surfaces displayed morphologic changes after immersion in both media because of loss of bismuth. A decrease in radiopacity was observed over time in all groups, with a statistically significant difference after 30 days for groups DW immersed in blood and 80% DW/20% immersed in both media (P < .05). Conclusions: The ratio of 80% DVV/20% PG as a vehicle for MTA results in a lower color alteration when in contact with blood. (AU)

FAPESP's process: 13/07677-6 - Evaluation of Sealing ability, changes of colors and surface morphology of MTA and Portland cement associated with different radiopacifiers and vehicles.
Grantee:Bruno Martini Guimarães
Support Opportunities: Scholarships in Brazil - Doctorate