title: Effect of root canal irrigating solutions on the compressive strength of tricalcium silicate cements.
abstract: OBJECTIVE
  The aim of this study was to evaluate the effect of root canal irrigants on the compressive strength of hydraulic tricalcium silicate cements.
  
  
  METHODS
  Specimens (n = 60) of tricalcium silicate materials-Group 1: White ProRoot mineral trioxide aggregate (MTA), Group 2: NeoMTA Plus, Group 3: White MTA Angelus, and Group 4: Biodentine were exposed to one of the solutions (n = 20): Phosphate buffered saline (PBS; control), 3 % NaOCl, or 17 % EDTA for 5 min while being suspended in PBS. Compressive strength values were evaluated after 7 days of storage. The data were statistically analyzed by two-way ANOVA and Tukey's multiple comparison test (P = 0.05).
  
  
  RESULTS
  Biodentine (BD) showed significantly higher compressive strength than the other materials (P < 0.05) in the control group. When exposed to NaOCl, compressive strength of WMTA and WMTA-A decreased significantly (P < 0.05), while EDTA decreased the compressive strength of all the cements compared to the control (P < 0.05). There was no significant difference in the compressive strength of BD and NMTA-P when exposed to NaOCl or EDTA.
  
  
  CONCLUSIONS
  Biodentine and NeoMTA Plus did not show a significant reduction in compressive strength when exposed to NaOCl. EDTA reduced the compressive strength of the cements tested.
  
  
  CONCLUSIONS
  Tricalcium silicates were differentially influenced by root canal irrigants. It is essential to understand the composition of these materials prior to clinical use. Traces of irrigants from the root canal wall must be thoroughly removed.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha University, Chennai, India.
authors.forename: Lokhasudhan
authors.initials: L
authors.lastname: Govindaraju
authors.affiliation: Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha University, Plot 1500, 16th Main Road, Anna Nagar West, Chennai, Tamil Nadu, India. prasanna_neelakantan@yahoo.com.
authors.forename: Prasanna
authors.initials: P
authors.lastname: Neelakantan
authors.affiliation: Texas A&M University Baylor College of Dentistry, Dallas, TX, USA.
authors.forename: James L
authors.initials: JL
authors.lastname: Gutmann
mesh_terms: D017607:Aluminum Compounds / Q000494:pharmacology; D017610:Calcium Compounds / Q000494:pharmacology*; D019245:Compressive Strength; D003738:Dental Cements / Q000494:pharmacology*; D004338:Drug Combinations; D004492:Edetic Acid / Q000494:pharmacology; D008422:Materials Testing; D010087:Oxides / Q000494:pharmacology; D012388:Root Canal Irrigants / Q000494:pharmacology*; D017640:Silicates / Q000494:pharmacology*; D012973:Sodium Hypochlorite / Q000494:pharmacology
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D003738:Dental Cements; D004338:Drug Combinations; D010087:Oxides; D012388:Root Canal Irrigants; D017640:Silicates; C086631:mineral trioxide aggregate; C506393:tricalcium silicate; D004492:Edetic Acid; D012973:Sodium Hypochlorite
keywords: Bismuth oxide; EDTA; Mineral trioxide aggregate; Sodium hypochlorite; Tantalite; Zirconium oxide