title: Immediate, non-submerged, root-analogue zirconia implant in single tooth replacement.
abstract: This report demonstrates the successful clinical use of a modified root-analogue zirconia implant for immediate single tooth replacement. A right maxillary premolar was removed and a custom-made, root-analogue, roughened zirconia implant with macro-retentions in the interdental space was fabricated and placed into the extraction socket 4 days later. Four months after root implantation a composite crown was cemented. No complications occurred during the healing period. An excellent esthetic and functional result was achieved with the composite crown. No clinically noticeable bone resorption or soft-tissue recession was observed at 26 months follow up. Significant modifications such as macro-retentions seem to indicate that primary stability and excellent osseointegration of immediate root-analogue zirconia implants can be achieved, while preventing unesthetic bone resorption. The macro-retentions must be limited to the interdental space to avoid fracture of the thin buccal cortex. This successful case warrants further clinical research in well controlled trials.
authors.affiliation: Alfred Kocher, Medical University Vienna, Waehringerguertel 18-20, 1090 Vienna, Austria.
authors.forename: W
authors.initials: W
authors.lastname: Pirker
authors.forename: A
authors.initials: A
authors.lastname: Kocher
mesh_terms: D001641:Bicuspid / Q000601:surgery; D003188:Composite Resins / Q000737:chemistry; D017076:Computer-Aided Design; D003442:Crowns; D003758:Dental Implantation, Endosseous / Q000379:methods; D019250:Dental Implants, Single-Tooth; D003764:Dental Materials / Q000737:chemistry; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D019094:Dental Prosthesis, Implant-Supported; D004955:Esthetics, Dental; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D016348:Osseointegration / Q000502:physiology; D017213:Root Caries / Q000601:surgery; D014092:Tooth Root; D020390:Tooth Socket / Q000601:surgery; D015040:Zirconium / Q000737:chemistry
chemical_list: D003188:Composite Resins; D003764:Dental Materials; D015040:Zirconium; C028541:zirconium oxide