title: Cast metal vs. glass fibre posts: a randomized controlled trial with up to 3 years of follow up.
abstract: OBJECTIVE
  This randomized controlled trial compared the survival of glass fibre and cast metal dental posts used to restore endodontically treated teeth with no remaining coronal wall.
  
  
  METHODS
  Fifty-four participants (45 women) and 72 teeth were evaluated during a follow-up period of up to 3 years. Teeth were randomly allocated to the glass-fibre and cast-metal post groups. All teeth were restored with single metal-ceramic crowns. Survival probabilities were analyzed using Kaplan-Meier statistics (p≤0.05).
  
  
  RESULTS
  The 3-year recall rate was 92.3% and the survival rates of glass fibre and cast metal posts were similar (97.1% and 91.9%, respectively; p=0.682). Four failures were observed: two glass fibre posts in a premolar and anterior tooth debonded, one glass fibre post in a premolar debonded in association with root fracture, and one root fracture occurred in a molar with a cast metal post.
  
  
  CONCLUSIONS
  Glass fibre and cast metal posts showed similar clinical performance in teeth with no remaining coronal wall after 3 years.
  
  
  CONCLUSIONS
  Posts are used to restore most endodontically treated teeth with no remaining coronal wall. This randomized controlled trial, one of few to compare glass fibre and cast metal posts in such teeth, showed that post type did not significantly influence the survival of restorations. These results can help dentists respond to the important question of how best to rehabilitate endodontically treated teeth with no remaining coronal wall.
authors: Graduate Program in Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457, Pelotas, RS 96015-560, Brazil. Electronic address: rafaelonofre@terra.com.br.
authors: Rafael
authors: R
authors: Sarkis-Onofre
authors: Graduate Program in Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457, Pelotas, RS 96015-560, Brazil. Electronic address: rogeriocastilho@hotmail.com.
authors: Rogério de Castilho
authors: RC
authors: Jacinto
authors: Graduate Program in Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457, Pelotas, RS 96015-560, Brazil. Electronic address: noeliboscato@gmail.com.
authors: Noéli
authors: N
authors: Boscato
authors: Graduate Program in Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457, Pelotas, RS 96015-560, Brazil. Electronic address: cencims@gmail.com.
authors: Maximiliano Sérgio
authors: MS
authors: Cenci
authors: Graduate Program in Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457, Pelotas, RS 96015-560, Brazil. Electronic address: tatiana.cenci@ufpel.tche.br.
authors: Tatiana
authors: T
authors: Pereira-Cenci
mesh_terms: D000328:Adult; D001641:Bicuspid / Q000293:injuries; D003442:Crowns; D003722:Dental Alloys / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D004311:Double-Blind Method; D005260:Female; D005500:Follow-Up Studies; D005898:Glass / Q000737:chemistry*; D006801:Humans; D008297:Male; D016876:Metal Ceramic Alloys / Q000737:chemistry; D008875:Middle Aged; D008963:Molar / Q000293:injuries; D011176:Post and Core Technique / Q000295:instrumentation*; D011446:Prospective Studies; D019279:Resin Cements / Q000737:chemistry; D016019:Survival Analysis; D014082:Tooth Fractures / Q000145:classification; D014092:Tooth Root / Q000293:injuries; D019553:Tooth, Nonvital / Q000628:therapy
chemical_list: D003722:Dental Alloys; D003764:Dental Materials; D016876:Metal Ceramic Alloys; D019279:Resin Cements; C009753:fiberglass
keywords: Cementation; Clinical trial; Dental restoration; Dowel and core; Fibre-reinforced post; Follow-up studies