title: Immediately restored single implants in the aesthetic zone of the maxilla using a novel design: 1-year report.
abstract: OBJECTIVE
  To evaluate immediate placement and immediate restoration of a novel implant with a 12°-angled prosthodontic platform, in fresh extraction sockets of the aesthetic zone of the maxilla.
  
  
  METHODS
  Tapered, roughened surface implants of 4 mm (n=15) or 5 mm (n=13) diameter were placed in 27 participants (mean age: 47.1 years; range: 21-71 years) requiring an immediate replacement of single anterior maxillary teeth. Provisional screw-retained all-ceramic crowns were placed within 4 h following optical impressions. At 8 weeks (baseline), definitive screw-retained all-ceramic crowns were placed in occlusion.
  
  
  RESULTS
  Twenty-six of the 28 implants met the inclusion criteria at surgery. Marginal bone levels revealed bone gain between surgery and baseline, and between baseline and 1 year of 0.2 mm (SD 0.75) and 0.78 mm (SD 2.45). Mean mid-buccal mucosal margins showed gains of 0.2 mm (SD 0.44). Prosthodontic maintenance and the aesthetics of the screw-retained implant crowns were facilitated by the external hex 12°-angled prosthodontic platform on the novel implant design, re-orientating the access cavity to the palatal or occlusal surfaces. All-ceramic implant crowns showed a high success rate with low maintenance issues over 1 year.
  
  
  CONCLUSIONS
  Tapered, roughened-surfaced implants with a novel 12°-angled prosthodontic platform immediately placed in fresh extraction sockets, immediately restored with provisional crowns and subsequent definitive crowns at 8 weeks were successful for 1 year.
authors.affiliation: Oral Implantology Research Group, Sir John Walsh Research Institute, School of Dentistry, University of Otago, Dunedin, New Zealand.
authors.forename: Simon D K
authors.initials: SD
authors.lastname: Brown
authors.forename: Alan G T
authors.initials: AG
authors.lastname: Payne
mesh_terms: D000328:Adult; D000368:Aged; D017076:Computer-Aided Design; D003442:Crowns; D000044:Dental Abutments; D003758:Dental Implantation, Endosseous / Q000379:methods; D019250:Dental Implants, Single-Tooth; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D019094:Dental Prosthesis, Implant-Supported; D003794:Dental Restoration, Temporary; D004955:Esthetics, Dental; D005260:Female; D006801:Humans; D057893:Immediate Dental Implant Loading; D007180:Incisor; D008297:Male; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D003765:Models, Dental; D011446:Prospective Studies; D013499:Surface Properties; D020390:Tooth Socket / Q000601:surgery; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D003776:Dental Porcelain