title: Zirconia removable telescopic dentures retained on teeth or implants for maxilla rehabilitation. Three-year observation of three cases.
abstract: This report addresses maxillary restoration with removable telescopic crown-retained palatal free dentures. One patient with 7 natural teeth (PERIO), a second patient with 6 dental implants (IMPL), and a third patient with 2 natural teeth and 4 dental implants (IMPL-PERIO) were treated. Zirconia copings for natural teeth and individual zirconia implant abutments were fabricated in CAD/CAM and used as primary crowns. Electroformed gold copings were used as secondary telescopes. All maxilla supraconstructions were fabricated with zirconia and CAD/CAM. Patients were monitored during a 3-year period; all teeth and implants survived, and no biological or mechanical complications occurred. The peri-implant and periodontal conditions were healthy. While recognizing the limitations of this report, results showed that fabricating removable zirconia structures by means of CAD/CAM can yield highly functional and esthetic results. Galvanoforming technology is the preferable means of fabricating secondary crowns. The combination of these techniques and materials results in a prosthetic reconstruction of high quality, good fit, and biocompatibility. Long-term studies of large populations are necessary to investigate the clinical properties of the material utilized in this type of construction.
authors.affiliation: Department of Operative Dentistry and Periodontology, University of Mainz, Germany. zafiropoulos@blaues-haus-duesseldorf.de
authors.forename: Gregory-George
authors.initials: GG
authors.lastname: Zafiropoulos
authors.forename: Jochen
authors.initials: J
authors.lastname: Rebbe
authors.forename: Ulrich
authors.initials: U
authors.lastname: Thielen
authors.forename: Giorgio
authors.initials: G
authors.lastname: Deli
authors.forename: Christian
authors.initials: C
authors.lastname: Beaumont
authors.forename: Oliver
authors.initials: O
authors.lastname: Hoffmann
mesh_terms: D000368:Aged; D001672:Biocompatible Materials / Q000737:chemistry; D017076:Computer-Aided Design; D003442:Crowns; D000044:Dental Abutments; D015921:Dental Implants; D018772:Dental Marginal Adaptation; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D003781:Denture Retention / Q000295:instrumentation; D003827:Denture, Complete, Upper; D003828:Denture, Overlay; D055664:Electrochemical Techniques; D004955:Esthetics, Dental; D005260:Female; D005500:Follow-Up Studies; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010510:Periodontal Diseases / Q000628:therapy; D012189:Retrospective Studies; D015040:Zirconium / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D015921:Dental Implants; D003764:Dental Materials; D006047:Gold Alloys; D015040:Zirconium; C028541:zirconium oxide