Dissolution of a mineral trioxide aggregate sealer in endodontic solvents compared to conventional sealers

Braz Oral Res. 2016:30:S1806-83242016000100215. doi: 10.1590/1807-3107BOR-2016.vol30.0016. Epub 2016 Feb 23.

Abstract

The aim of this study is to evaluate the solubility of a Mineral Trioxide Aggregate sealer (MTA-Fillapex) compared with five other sealers, calcium hydroxide (Sealapex), resin (Realseal), zinc oxide-eugenol (Tubli-Seal), and two epoxy resins (AH-26 and AH-Plus), in chloroform and eucalyptoil in static and ultrasonic environments. Samples of each sealer were prepared (n = 180) and then divided into 12 groups that were immersed in solvents for 5 and 10 min in static and ultrasonic environments. The mean weight loss was determined, and the values were compared using Student's t-test, One-way ANOVA, and Tukey's HSD post-hoc test (p < 0.05). In chloroform, MTA-Fillapex, AH-26, and Sealapex displayed moderate solubility with no significant difference in dissolution (p = 0.125); however, their dissolution was significantly lower than that of AH-Plus (p < 0.001), which was almost fully dissolved after 10 minutes. Realseal was significantly less soluble than all sealers (p < 0.001). In eucalyptoil, MTA-Fillapex showed low solubility, as all of the sealers did, but Tubli-Seal was significantly more soluble than other sealers (p < 0.001). Using ultrasonic activation resulted in a significantly higher dissolution rate in chloroform for all sealers except MTA-Fillapex after 10 min (p = 0.226). In eucalyptoil, ultrasonic activation significantly increased the dissolution rate of all sealers except MTA-Fillapex after 5 and 10 min, Sealapex at 10 min, and AH-Plus at 5 min (p > 0.05). In conclusion, MTA-Fillapex was not sufficiently dissolved in either solvent. Ultrasonic activation had limited effectiveness on MTA-Fillapex dissolution, whereas it significantly increased the efficiency of solvents in dissolving a number of endodontic sealers.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aluminum Compounds / chemistry*
  • Analysis of Variance
  • Bismuth / chemistry
  • Calcium Compounds / chemistry*
  • Calcium Hydroxide / chemistry
  • Chloroform / chemistry*
  • Cyclohexanols / chemistry*
  • Drug Combinations
  • Epoxy Resins / chemistry
  • Eucalyptol
  • Immersion
  • Materials Testing
  • Monoterpenes / chemistry*
  • Oxides / chemistry*
  • Reference Values
  • Reproducibility of Results
  • Root Canal Filling Materials / chemistry*
  • Salicylates / chemistry
  • Silicates / chemistry*
  • Silver / chemistry
  • Solubility
  • Solvents / chemistry*
  • Time Factors
  • Titanium / chemistry
  • Ultrasonic Waves
  • Zinc Oxide-Eugenol Cement / chemistry

Substances

  • Aluminum Compounds
  • Calcium Compounds
  • Cyclohexanols
  • Drug Combinations
  • Epoxy Resins
  • Monoterpenes
  • Oxides
  • Root Canal Filling Materials
  • Salicylates
  • Silicates
  • Solvents
  • Zinc Oxide-Eugenol Cement
  • epoxy resin-based root canal sealer
  • mineral trioxide aggregate
  • Sealapex
  • Silver
  • epoxy resin AH-26
  • tubliseal
  • Chloroform
  • Titanium
  • Calcium Hydroxide
  • Eucalyptol
  • Bismuth