title: In vitro fracture resistance of endodontically treated roots filled with a bonded filling material or different types of posts.
abstract: OBJECTIVE
  This study aimed to compare the fracture resistance of roots filled with a bonded material, fiber posts, or titanium post systems.
  
  
  METHODS
  Canals in the first group were filled with AH Plus and gutta-percha cones, and roots in the second group were filled with Epiphany sealer and Resilon cones. The root fillings (60 roots) were removed up to 4 mm from the canal apex to obtain 10-mm-deep post spaces, and posts were cemented. The groups were as follows: AH Plus control group, Epiphany control group, AH Plus fiber post group, AH Plus titanium post group, Epiphany fiber post group, and Epiphany titanium post group. Fracture tests were performed by using an Instron testing machine. The force was applied at a 45° axial angle with a constant speed of 1 mm/min. For each sample, the force at which fracture occurred was recorded in units of newtons. Statistical analysis was carried out by using analysis of variance test.
  
  
  RESULTS
  There was no statistically significant difference between all groups (P > .05).
  
  
  CONCLUSIONS
  Titanium posts, fiber posts, and Epiphany root canal filling systems were found to have no reinforcing effect on endodontically treated roots.
authors.affiliation: Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
authors.forename: Burak
authors.initials: B
authors.lastname: Sagsen
authors.forename: Mustafa
authors.initials: M
authors.lastname: Zortuk
authors.forename: Huseyin
authors.initials: H
authors.lastname: Ertas
authors.forename: Ozgur
authors.initials: O
authors.lastname: Er
authors.forename: Sezer
authors.initials: S
authors.lastname: Demirbuga
authors.forename: Hakan
authors.initials: H
authors.lastname: Arslan
mesh_terms: D003188:Composite Resins / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis / Q000295:instrumentation; D004853:Epoxy Resins / Q000737:chemistry; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D011176:Post and Core Technique / Q000295:instrumentation*; D019279:Resin Cements / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry / Q000145:classification*; D013314:Stress, Mechanical; D013696:Temperature; D013997:Time Factors; D014025:Titanium / Q000737:chemistry; D014082:Tooth Fractures / Q000503:physiopathology*; D014092:Tooth Root / Q000503:physiopathology*; D019553:Tooth, Nonvital / Q000503:physiopathology*; D014867:Water / Q000737:chemistry
chemical_list: C542562:BisCem cement; D003188:Composite Resins; D003764:Dental Materials; D004853:Epoxy Resins; D019279:Resin Cements; D012387:Root Canal Filling Materials; C486893:epiphany sealer; C534916:epoxy resin-based root canal sealer; C486892:resilon sealer; D014867:Water; D006171:Gutta-Percha; D014025:Titanium
keywords: Epiphany; Resilon; fiber post; fracture strength; titanium post