title: A comparative evaluation of the sealing ability of 2 root-end filling materials: an in vitro leakage study using Enterococcus faecalis.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the sealing ability of EndoSequence Bioceramic Root-end Repair (BCRR) material when compared with white mineral trioxide aggregate (WMTA).
  
  
  METHODS
  Forty single-rooted teeth were instrumented, obturated with gutta-percha, root-end resected, and retrofilled with 2 different materials: white ProRoot MTA (WMTA) (n = 15) and BCRR (n = 15). Unfilled specimens (n = 10) received no retrofill and were used as controls. All groups received E. faecalis in a created reservoir coronal to the root filling and the presence of microleakage was evaluated by counting the colony-forming units from each specimen. The results were analyzed with 1-way analysis of variance.
  
  
  RESULTS
  There was no significant difference in leakage between the 2 experimental groups, but there was a significant difference with the control (P ≤ .05).
  
  
  CONCLUSIONS
  This study suggests that BCRR is equivalent in sealing ability to WMTA when used as root-end filling material in vitro.
authors.affiliation: Department of Endodontics, College of Dentistry, University of Florida, Gainesville, FL 32610-0436, USA. unair@dental.ufl.edu
authors.forename: Uma
authors.initials: U
authors.lastname: Nair
authors.forename: Simon
authors.initials: S
authors.lastname: Ghattas
authors.forename: Mohamed
authors.initials: M
authors.lastname: Saber
authors.forename: Marianella
authors.initials: M
authors.lastname: Natera
authors.forename: Clay
authors.initials: C
authors.lastname: Walker
authors.forename: Roberta
authors.initials: R
authors.lastname: Pileggi
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry; D001047:Apicoectomy; D058491:Bacterial Load; D017610:Calcium Compounds / Q000737:chemistry; D002130:Calcium Phosphates / Q000737:chemistry; D001840:Dental Bonding; D003763:Dental Leakage / Q000145:classification / Q000382:microbiology*; D003786:Dental Pulp Cavity / Q000382:microbiology; D004338:Drug Combinations; D013293:Enterococcus faecalis / Q000502:physiology*; D004853:Epoxy Resins / Q000737:chemistry; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D010087:Oxides / Q000737:chemistry; D012184:Retrograde Obturation / Q000379:methods*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D018915:Root Canal Preparation / Q000379:methods; D017640:Silicates / Q000737:chemistry; D013635:Tantalum / Q000737:chemistry; D015040:Zirconium / Q000737:chemistry
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D002130:Calcium Phosphates; D004338:Drug Combinations; C550603:EndoSequence root repair material; D004853:Epoxy Resins; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C534916:epoxy resin-based root canal sealer; C086631:mineral trioxide aggregate; C113130:obtura II; D013635:Tantalum; D006171:Gutta-Percha; D015040:Zirconium