title: Influence of immediate and delayed post space preparation on sealing ability of resilon.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the effect of immediate and delayed post space preparation on the sealing ability of a new root canal filling material.
  
  
  METHODS
  Seventy-two extracted teeth were prepared and obturated with gutta-percha/AH-Plus and Resilon/Epiphany sealer by the lateral compaction technique. The teeth were divided randomly into 4 groups, and the post space was prepared either immediately after filling or after the obturated teeth had been stored in saline at 37 degrees C for a week. Leakage was determined by a fluid-transport device.
  
  
  RESULTS
  The results showed that immediate post space preparation of the Resilon/Epiphany-filled group had a mean leakage value of 0.81 microL/h, whereas the delayed preparation had a mean leakage value of 0.75 microL/h. No difference (P > .05) in microleakage was found between gutta-percha/AH-Plus and Resilon/Epiphany-filled groups after immediate preparation. There was significant difference between gutta-percha/AH-Plus and Resilon/Epiphany groups in the delayed post space preparation (P < .05).
  
  
  CONCLUSIONS
  Epiphany/Resilon obturation achieved better sealing than gutta-percha/AH-Plus at the apical end, especially in delayed post space preparation when mechanical techniques were used.
authors: Operative Dentistry and Endodontics Department, Ondokuz Mayis University, Faculty of Dentistry, Samsun, Turkey. bodrumlu@omu.edu.tr
authors: Emre
authors: E
authors: Bodrumlu
authors: Umut
authors: U
authors: Tunga
authors: Tayfun
authors: T
authors: Alaçam
mesh_terms: D003763:Dental Leakage / Q000517:prevention & control*; D004853:Epoxy Resins; D006171:Gutta-Percha; D006801:Humans; D011176:Post and Core Technique; D012387:Root Canal Filling Materials; D013997:Time Factors
chemical_list: D004853:Epoxy Resins; D012387:Root Canal Filling Materials; C486893:epiphany sealer; C534916:epoxy resin-based root canal sealer; C486892:resilon sealer; D006171:Gutta-Percha