title: A radiographic study regarding post retained restorations.
abstract: The aim of this study was to evaluate the incidence of intraradicular retention and the prevalence of different types of posts used for the restoration of endodontically treated teeth, in clinical practice.
  
  
  METHODS
  The study was performed on 94 digital panoramic radiographies that allowed a comprehensive appreciation. Root canal fillings and the posts were identified on these radiographies and their correctness and quality were assessed by measurements according to the data provided by the specialized literature references. Morphologic parameters investigated were: length, diameter and configuration.
  
  
  RESULTS
  474 teeth with endodontic treatment were identified, of which 224 were post restored: 156 (69.6%) using cast posts, 55 (24.6%) using prefabricated non-metallic posts and 13 (5.8%) using threaded prefabricated metallic posts. Regardless the type, we have noticed a great number of errors (84.37%) concerning the manufacturing, the selection, or the application of the post. The errors resulted from disregarding at least one of the investigated morphologic parameters. Intraradicular retention is indicated in clinical situations were dental tissues destruction does not allow placement of crown fillings.
  
  
  CONCLUSIONS
  The improvement of endodontically treated teeth restorations retention with posts is appropriate as long as post preparation does not undermine the remaining tooth structure. Scientific debates still exist regarding the safest modality to restore a non-vital tooth.
authors.affiliation: Department of Oral Rehabilitation, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroilor Sanitari Ave., Bucharest, Romania.
authors.forename: Vanda Roxana
authors.initials: VR
authors.lastname: Nimigean
authors.forename: Lavinia
authors.initials: L
authors.lastname: Buţincu
authors.forename: V
authors.initials: V
authors.lastname: Nimigean
mesh_terms: D019232:Dental Restoration Failure; D006801:Humans; D011176:Post and Core Technique / Q000295:instrumentation*; D011859:Radiography; D019553:Tooth, Nonvital / Q000000981:diagnostic imaging* / Q000628:therapy