title: Sealing ability of white and gray mineral trioxide aggregate mixed with distilled water and 0.12% chlorhexidine gluconate as a root end filling material: an ex vivo evaluation.
abstract: OBJECTIVE
  The aim of this study was to evaluate the sealing ability of white and gray mineral trioxide aggregate (MTA) mixed with distilled water and 0.12% chlorhexidine (CHX) gluconate when used as a root-end filling material using the dye-penetration technique.
  
  
  METHODS
  A total of 48 single-rooted human teeth were cleaned, shaped, and obturated with gutta-percha and AH Plus sealer. The apical 3 mm of each root was resected, and 3-mm deep root-end cavity preparations were made. The teeth were randomly divided into 4 experimental groups, each containing 8 teeth, and 2 negative and positive control groups, each containing 8 teeth. Root-end cavities in the experimental groups were filled with the experimental materials. After application of nail polish, the teeth were exposed to India ink for 72 h and longitudinally sectioned, and the extent of dye penetration was measured with a stereomicroscope.
  
  
  RESULTS
  No statistically significant differences were observed in the sealing ability of gray and white MTA mixed with distilled water and 0.12% CHX.
  
  
  CONCLUSIONS
  CHX appears to be a good alternative to replace distilled water, as a solution to be mixed with MTA.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Yenepoya Dental College, Deralakatte, Mangalore, India.
authors.forename: K Harish Kumar
authors.initials: KH
authors.lastname: Shetty
authors.forename: M S
authors.initials: MS
authors.lastname: Prathap
authors.forename: K J
authors.initials: KJ
authors.lastname: Prithviraj
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D002710:Chlorhexidine / Q000031:analogs & derivatives* / Q000737:chemistry; D003763:Dental Leakage; D004338:Drug Combinations; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D066298:In Vitro Techniques; D010087:Oxides / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000737:chemistry; D012389:Root Canal Obturation / Q000379:methods*; D017640:Silicates / Q000737:chemistry*; D014867:Water
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D017640:Silicates; C086631:mineral trioxide aggregate; D014867:Water; D006171:Gutta-Percha; C010882:chlorhexidine gluconate; D002710:Chlorhexidine