title: A comparative evaluation of 3 root canal filling systems.
abstract: OBJECTIVE
  This in vitro study was conducted to evaluate and compare the microbial leakage of a new obturation system: Guttaflow with resin-based Resilon cones and Epiphany sealer, keeping gutta-percha with AH plus sealer as the standard.
  
  
  METHODS
  The microbial leakage was tested using Enterococcus faecalis ATCC 29,212 as the bacterial marker in the microbial leakage test. These results were supplemented with scanning electron microscopy (SEM).
  
  
  CONCLUSIONS
  The microbial leakage test indicated good sealing abilities for Resilon and Guttaflow, with the latter resisting microbial leakage for a longer period. AH plus with gutta-percha showed poor sealing ability. Results of the scanning electron microscopy correlated with the microbial leakage test. This study indicates that newer obturation systems like Guttaflow and Resilon cones with Epiphany provide better seal against microbial leakage than the standard obturation material, gutta-percha used with AH plus sealer.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India. r_roongta@yahoo.com
authors.forename: Ruchika Roongta
authors.initials: RR
authors.lastname: Nawal
authors.forename: Mahantesh
authors.initials: M
authors.lastname: Parande
authors.forename: Ritu
authors.initials: R
authors.lastname: Sehgal
authors.forename: Nageswar R
authors.initials: NR
authors.lastname: Rao
authors.forename: Aisha
authors.initials: A
authors.lastname: Naik
mesh_terms: D001840:Dental Bonding; D003763:Dental Leakage / Q000145:classification* / Q000382:microbiology; D018772:Dental Marginal Adaptation; D003786:Dental Pulp Cavity / Q000382:microbiology / Q000648:ultrastructure; D003804:Dentin / Q000648:ultrastructure; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D004338:Drug Combinations; D013293:Enterococcus faecalis / Q000502:physiology; D004853:Epoxy Resins / Q000737:chemistry; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000295:instrumentation / Q000379:methods*; D018915:Root Canal Preparation / Q000379:methods; D013499:Surface Properties; D013997:Time Factors
chemical_list: D004129:Dimethylpolysiloxanes; D004338:Drug Combinations; D004853:Epoxy Resins; C515718:GuttaFlow; D012387:Root Canal Filling Materials; C486893:epiphany sealer; C534916:epoxy resin-based root canal sealer; C486892:resilon sealer; D006171:Gutta-Percha