title: Impact of Bruxism on Ceramic Defects in Implant-Borne Fixed Dental Prostheses: A Retrospective Study.
abstract: OBJECTIVE
  Ceramic veneer fracture is a frequent complication in implant-borne fixed restorations. The retrospective clinical study assesses the effect of bruxism on this complication.
  
  
  METHODS
  A sample of 507 implant-borne fixed units inserted between 1995 and 2011 in 144 patients were examined. Any detected veneer fractures were assigned to one of four groups according to extent and position. A hypothetical correlation between bruxism and ceramic veneer fractures was examined.
  
  
  RESULTS
  Of 34 patients (23.6%) with at least one ceramic veneer fracture, 24 were bruxers (70%) and 10 were nonbruxers (30%) (P = .002).
  
  
  CONCLUSIONS
  Bruxism may pose a risk for ceramic fractures.
authors.forename: Aikaterini
authors.initials: A
authors.lastname: Mikeli
authors.forename: Michael H
authors.initials: MH
authors.lastname: Walter
mesh_terms: D000328:Adult; D000368:Aged; D002012:Bruxism / Q000150:complications*; D002516:Ceramics / Q000737:chemistry*; D003442:Crowns; D003764:Dental Materials / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D019554:Dental Restoration Wear; D003801:Dental Veneers; D003830:Denture, Partial, Fixed; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D016876:Metal Ceramic Alloys / Q000737:chemistry; D008875:Middle Aged; D012189:Retrospective Studies; D055815:Young Adult; D015040:Zirconium / Q000737:chemistry
chemical_list: D003764:Dental Materials; D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; D015040:Zirconium; C028541:zirconium oxide