title: Residual effects and surface alterations in disinfected gutta-percha and Resilon cones.
abstract: The aim of this study was to evaluate alterations on the surface of gutta-percha and Resilon cones when exposed to 2% chlorhexidine gel (CHX) and 5.25% sodium hypochlorite (NaOCl) and to evaluate their possible antibacterial residual effects against Enterococcus faecalis and Porphyromonas gingivalis. A total of 270 medium tapered cones (135 gutta-percha and 135 Resilon) were selected and divided into three groups, according to the substance (NaOCl, CHX, and sterile saline solution). The cones were immersed in each substance (for 1, 5, 10, 20, and 30 min), rinsed in saline solution, and dried. They were placed onto inoculated agar plates and incubated under specific conditions. Scanning electron microscopy analysis was performed on additional 270 disinfected cones. Another 18 cones were used as controls. Based on the results, it was concluded that Resilon cones exposed to CHX for 10, 20, and 30 min demonstrated residual antibacterial action and that substances did not cause alterations to the cones' surface.
authors: Department of Endodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil. bpgomes@fop.unicamp.br
authors: Brenda P F A
authors: BP
authors: Gomes
authors: Vanessa B
authors: VB
authors: Berber
authors: Francisco
authors: F
authors: Montagner
authors: Neylla T
authors: NT
authors: Sena
authors: Alexandre A
authors: AA
authors: Zaia
authors: Caio C R
authors: CC
authors: Ferraz
authors: Francisco J
authors: FJ
authors: Souza-Filho
mesh_terms: D002710:Chlorhexidine / Q000031:analogs & derivatives / Q000494:pharmacology; D019551:Dental Disinfectants / Q000494:pharmacology*; D013293:Enterococcus faecalis / Q000187:drug effects; D006171:Gutta-Percha; D008855:Microscopy, Electron, Scanning; D016966:Porphyromonas gingivalis / Q000187:drug effects; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants / Q000494:pharmacology*; D012973:Sodium Hypochlorite / Q000494:pharmacology; D013499:Surface Properties
chemical_list: D019551:Dental Disinfectants; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C486892:resilon sealer; D006171:Gutta-Percha; D012973:Sodium Hypochlorite; C010882:chlorhexidine gluconate; D002710:Chlorhexidine