title: The sealing ability of resilon and gutta-parcha following different smear layer removal methods: an ex vivo study.
abstract: OBJECTIVE
  The objective of this study was to compare the ex-vivo sealing ability of Resilon/new Epiphany (SE) sealer to that of gutta-percha/AH-Plus following smear layer removal with EDTA or MTAD.
  
  
  METHODS
  One hundred extracted single-rooted human teeth were divided into 4 experimental groups and 2 positive and negative control groups. EDTA was used in groups 1 and 2. In groups 3 and 4 MTAD was used. The root canals were then obturated with gutta-percha/AH-Plus in groups 1 and 3 and Resilon/Epiphany (SE) in groups 2 and 4. After sterilization, the samples were coronally exposed to human saliva and monitored every 24 hours for 60 days.
  
  
  RESULTS
  In groups 1, 2, 3, and 4, 45%, 65%, 90%, and 65% of specimens leaked within 60 days, respectively. There were statistically significant differences between group 1 and 3 (P < .05).
  
  
  CONCLUSIONS
  Resilon/Epiphany (SE) system is as effective as gutta-percha/AH-Plus in preventing saliva leakage. MTAD did not adversely affect the sealing ability of Resilon/Epiphany (SE).
authors.affiliation: Department of Endodontics, School of Dentistry/Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran; Researcher, Iranian Center for Endodontic Research, Tehran, Iran.
authors.forename: Noushin
authors.initials: N
authors.lastname: Shokouhinejad
authors.forename: Mohammad R
authors.initials: MR
authors.lastname: Sharifian
authors.forename: Marziyeh
authors.initials: M
authors.lastname: Aligholi
authors.forename: Hadi
authors.initials: H
authors.lastname: Assadian
authors.forename: Rachel K
authors.initials: RK
authors.lastname: Tabor
authors.forename: Mohammad H
authors.initials: MH
authors.lastname: Nekoofar
mesh_terms: D002614:Chelating Agents / Q000737:chemistry; D019343:Citric Acid / Q000737:chemistry; D001840:Dental Bonding; D003763:Dental Leakage / Q000145:classification; D003804:Dentin / Q000648:ultrastructure; D004318:Doxycycline / Q000737:chemistry; D004492:Edetic Acid / Q000737:chemistry; D004853:Epoxy Resins / Q000737:chemistry; D006171:Gutta-Percha / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D011136:Polysorbates / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000737:chemistry; D012389:Root Canal Obturation; D012463:Saliva / Q000737:chemistry; D016369:Smear Layer; D013997:Time Factors
chemical_list: D002614:Chelating Agents; D004853:Epoxy Resins; C475043:MTAD (intracanal irrigant); D011136:Polysorbates; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C486893:epiphany sealer; C534916:epoxy resin-based root canal sealer; C486892:resilon sealer; D019343:Citric Acid; D006171:Gutta-Percha; D004492:Edetic Acid; D004318:Doxycycline