title: Detection of vertical root fractures by cone-beam computerized tomography in endodontically treated teeth with fiber-resin and titanium posts: an in vitro study.
abstract: OBJECTIVE
  The aim of this study was to assess the performance of 2 cone-beam computerized tomography (CBCT) systems for detecting vertical fractures in root-filled teeth with fiber-resin or titanium posts.
  
  
  METHODS
  CBCT images acquired with the use of Scanora 3D and i-CAT of roots with fiber-resin (n = 30) or titanium (n = 29) posts, before and after the induction of fractures, were assessed by 6 radiologists using Ondemand 3D software. Interobserver agreement was analyzed using kappa statistics. Sensitivity, specificity, accuracy, and positive and negative predictive values were compared with analysis of variance/Student-Newman-Keuls test.
  
  
  RESULTS
  Interobserver agreement for fiber-resin posts ranged from 0.5 to 0.7 (Scanora 3D) and 0.35-0.76 (i-CAT). For titanium posts, ranged from 0.42 to 0.80 (Scanora 3D) and 0.31-0.73 (i-CAT). Higher sensitivity (0.85; P < .05) and negative predictive values (0.88; P < .001) were observed for i-CAT in roots with fiber-resin posts than with other combinations.
  
  
  CONCLUSIONS
  The diagnostic performance for detecting vertical fractures was higher for roots with fiber-resin than with titanium posts.
authors.affiliation: Department of Pediatric Dentistry and Orthodontics, University of São Paulo City, São Paulo, Brazil. riveaines@yahoo.com
authors.forename: Rívea Inês
authors.initials: RI
authors.lastname: Ferreira
authors.forename: Golnosh
authors.initials: G
authors.lastname: Bahrami
authors.forename: Flemming
authors.initials: F
authors.lastname: Isidor
authors.forename: Ann
authors.initials: A
authors.lastname: Wenzel
authors.forename: Francisco
authors.initials: F
authors.lastname: Haiter-Neto
authors.forename: Francisco Carlos
authors.initials: FC
authors.lastname: Groppo
mesh_terms: D001641:Bicuspid; D054893:Cone-Beam Computed Tomography; D006801:Humans; D066298:In Vitro Techniques; D011176:Post and Core Technique; D011237:Predictive Value of Tests; D019252:Radiography, Dental, Digital; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation; D012680:Sensitivity and Specificity; D014025:Titanium; D014082:Tooth Fractures / Q000000981:diagnostic imaging*; D019553:Tooth, Nonvital / Q000000981:diagnostic imaging*
chemical_list: D012387:Root Canal Filling Materials; D014025:Titanium