title: Effect of storage temperature on sealing ability and solubility of white mineral trioxide aggregate.
abstract: OBJECTIVE
  Knowledge about the effect of storage conditions on the clinical performance of Mineral Trioxide Aggregate (MTA) is of great importance for clinicians. The aim of this study was to evaluate the effect of storage temperature on sealing ability and solubility of white MTA.
  
  
  METHODS
  This study was divided into two parts: sealing ability and solubility tests. Forty single-rooted human pre-molars were divided into three experimental (n = 10) and two control groups (n = 5). The root canals were instrumented and root apices were resected. Root-end cavities were prepared and filled with white MTA stored at 4°C, 25°C or 40°C. Microleakage was evaluated using a protein leakage test with bovine serum albumin at 24-h intervals for 120 days. The solubility test was also performed based on ISO specifications (ISO 2001-6876). Data were analyzed by one-way analysis of variance and post-hoc Tukey test, with a significance level set at p = 0.05.
  
  
  RESULTS
  The highest bovine serum albumin microleakage and the highest solubility rates were observed in 4°C followed by 25°C and 40°C groups. At higher temperatures, leakage needed significantly longer times to occur (p < 0.05).
  
  
  CONCLUSIONS
  Based on these findings, storage temperature appears to play an important role in the properties and hence clinical outcomes of MTA.
authors.affiliation: Department of Dental Material, Azad University, Tehran, Iran. saghiri@gmail.com
authors.forename: Mohammad Ali
authors.initials: MA
authors.lastname: Saghiri
authors.forename: Kamal
authors.initials: K
authors.lastname: Asgar
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Lotfi
authors.forename: Amir
authors.initials: A
authors.lastname: Nazari
authors.forename: Kasra
authors.initials: K
authors.lastname: Karamifar
authors.forename: Prasanna
authors.initials: P
authors.lastname: Neelakantan
authors.forename: James L
authors.initials: JL
authors.lastname: Gutmann
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D004338:Drug Combinations; D010087:Oxides / Q000737:chemistry*; D012387:Root Canal Filling Materials; D017640:Silicates / Q000737:chemistry*; D012995:Solubility; D013696:Temperature
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate