Immediate and delayed solubility of mineral trioxide aggregate and Portland cement

Abstract

This study investigated the solubility of mineral trioxide aggregate (MTA) and Portland cement since its mixture until 672 hours, by means of two complimentary methods. Metal ring molds filled with the cements were covered with distilled water and, at each experimental time (3, 24, 72, 168, 336 and 672 hours), were weighed as soon as the plates in which the samples have been placed. Empty rings served as the control group (n=8). Mean weight gain and loss was determined and analyzed statistically by two-way ANOVA and Tukey's test for all pairwise comparisons. Only Portland cement showed less than 3% weight loss through 24 hours. Detached MTA residues were heavier than those of Portland cement over the 3 to 168 hours. The weight of MTA rings increased more than that of Portland rings within 672 hours (p=0.05). The findings of the present study indicate that, in an aqueous environment MTA is more soluble than Portland cement and exceeds the maximum weight loss considered acceptable by ISO 6876 standard (2001).

Evaluation of the Effect of Intrinsic Material Properties and Ambient Conditions on the Dimensional Stability of White Mineral Trioxide Aggregate and Portland Cement

“…The level of solubility was less than 3% and thus within the limits set by international standards (1). The higher solubility of MTA is in accordance with previous research in which MTA exhibited higher solubility than Portland cement (7,18). The solubility of MTA was higher than the 3% recommended by ISO 6867; 2002 (1).…”

Mineral Trioxide Aggregate: A Comprehensive Literature Review—Part I: Chemical, Physical, and Antibacterial Properties

“…In an investigation on the solubility of AMTA in comparison to PC, the former material showed more than a 3% weight loss during the first 24 hours after mixing, which is beyond acceptable weight loss determined by the International Standard Organization (72).…”

“…Other reasons for difference in MTA solubility include the time of immersion of the material, the type of MTA, and the powder-to-liquid ratio (42,46,71,72).…”

Shear Bond Strength of a Self-adhering Flowable Composite and a Flowable Base Composite to Mineral Trioxide Aggregate, Calcium-enriched Mixture Cement, and Biodentine

“…It is suggested that at least 72 hours are necessary to achieve the desirable sealability of MTA (30,31). Odabas et al (16) evaluated the SBS of composite to Biodentine after 2 time intervals (ie, 12 minutes and 24 hours) and obtained an increased SBS value for the 24-hour period.…”