title: Ultrashort sintered porous-surfaced dental implants used to replace posterior teeth.
abstract: BACKGROUND
  This retrospective multicenter report provides data from a case series of partially edentulous subjects treated with an ultrashort (5-mm-long) sintered porous-surfaced (SPS) dental implant.
  
  
  METHODS
  The implant used had a tapered truncated cone shape, was 5-mm long, and had a maximal coronal diameter of 5 mm. Twenty-six implants were placed in 20 subjects to replace primarily maxillary and mandibular molar teeth. Submerged primary healing was used. Nine implants were restored with single crowns, one carried a single cantilever, and the remaining 16 implants were part of fixed implant-supported bridges, generally as the most distal abutment.
  
  
  RESULTS
  After functional periods of 1 to 8 years, two maxillary implants failed, giving maxillary and mandibular failure rates of 14.3% and 0%, respectively.
  
  
  CONCLUSIONS
  The results of this case series suggest that an SPS, press-fit, tapered dental implant with a length of 5 mm and a maximal coronal diameter of 5 mm should be investigated further as a solution for the management of highly resorbed posterior sites in partial edentulism, particularly in the mandible.
authors.affiliation: Discipline of Periodontics, Faculty of Dentistry, University of Toronto, Toronto, ON, Canada. douglas.deporter@destistry.utoronto.ca
authors.forename: Douglas
authors.initials: D
authors.lastname: Deporter
authors.forename: Bunnai
authors.initials: B
authors.lastname: Ogiso
authors.forename: Dong-Seok
authors.initials: DS
authors.lastname: Sohn
authors.forename: Kevin
authors.initials: K
authors.lastname: Ruljancich
authors.forename: Michael
authors.initials: M
authors.lastname: Pharoah
mesh_terms: D000328:Adult; D000368:Aged; D001862:Bone Resorption / Q000534:rehabilitation / Q000601:surgery; D003442:Crowns; D000044:Dental Abutments; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003830:Denture, Partial, Fixed; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation / Q000601:surgery; D008297:Male; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D008963:Molar; D016062:Porosity; D012189:Retrospective Studies; D013499:Surface Properties; D016019:Survival Analysis
chemical_list: D015921:Dental Implants