title: Long-term sealing ability of Resilon apical root-end fillings.
abstract: OBJECTIVE
  To evaluate ex vivo the long-term sealing ability of the SE Resilon Epiphany system as an apical root-end filling material.
  
  
  METHODS
  A total of 60 standardized horizontal bovine root sections were divided into three groups filled with either gutta-percha with AH 26, tooth-coloured mineral trioxide aggregate (MTA) or Resilon pellets with Epiphany SE, and submitted to capillary flow porometry at 48 h, 1 and 6 months to assess the minimum, mean flow and maximum pore diameters. Results of the different materials and results by material and time were analysed statistically using nonparametric tests; the level of significance was set at 0.05.
  
  
  RESULTS
  Resilon had smaller pore diameters than gutta-percha and MTA at 48 h and smaller mean flow and maximum pore diameters than gutta-percha and MTA at 1 month. At 6 months Resilon had larger minimum pore diameters than gutta-percha. Although not always statistically significant, the minimum, mean flow and maximum pore diameters of gutta-percha and MTA diminished with time. This was not the case for Resilon, where the same parameters increased.
  
  
  CONCLUSIONS
  All materials leaked at all times. Resilon performed better than gutta-percha and MTA in the short-term, but the seal of MTA and gutta-percha improved over time whereas the seal of Resilon deteriorated. It is critical to evaluate the performance of materials in the long-term contrary to most studies which are short-term.
authors.affiliation: Department of Operative Dentistry and Endodontology, Dental School, Ghent University, Ghent University Hospital, 9000 Gent, Belgium. mieke.debruyne@UGent.be
authors.forename: M A A
authors.initials: MA
authors.lastname: De Bruyne
authors.forename: R J G
authors.initials: RJ
authors.lastname: De Moor
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry; D000818:Animals; D001729:Bismuth / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry; D002417:Cattle; D001840:Dental Bonding; D003763:Dental Leakage / Q000145:classification; D003786:Dental Pulp Cavity / Q000648:ultrastructure*; D004338:Drug Combinations; D004853:Epoxy Resins / Q000737:chemistry; D006171:Gutta-Percha / Q000737:chemistry; D008422:Materials Testing; D010087:Oxides / Q000737:chemistry; D016062:Porosity; D012212:Rheology; D012387:Root Canal Filling Materials / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D013499:Surface Properties; D013997:Time Factors; D014025:Titanium / Q000737:chemistry; D019227:Tooth Apex / Q000648:ultrastructure*; D017155:Wettability
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D004853:Epoxy Resins; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C486893:epiphany sealer; C086631:mineral trioxide aggregate; C486892:resilon sealer; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D014025:Titanium; D001729:Bismuth