title: Immediate loading of dental implants in the edentulous maxilla.
abstract: OBJECTIVE
  Immediate loading of dental implants in the edentulous mandible has proven to be an effective, reliable, and predictable procedure. There is little long-term data available on similar treatments in the edentulous maxilla. The aim of the present study was to clinically evaluate edentulous maxilla rehabilitation with removable prostheses supported by the Ankylos SynCone (Dentsply-Friadent) system.
  
  
  METHODS
  The treatment method was based on immediate loading of four implants in the completely edentulous maxilla. A total of 180 implants were inserted in 45 patients. Dentures were placed on and retained by prefabricated conical crowns that were inserted into the existing denture base by direct intraoral polymerization immediately after surgery and supported by corresponding conical primary implant abutments.
  
  
  RESULTS
  During the observation period, two implants (1.11%) were removed due to the lack of osseointegration. One implant was removed due to peri-implantitis, and one other (0.55%) implant was removed because of a fracture after 6 months of function. The overall implant survival rate was 97.77%, while the prosthesis survival rate was 100%. Swelling or suppuration was not observed. After a total observation period of 26.7 months (range 12 to 54 months), all implants had healthy peri-implant soft tissue that showed low values of clinical parameters. Only seven implants (3.97%) presented a sulcus bleeding index of 3.
  
  
  CONCLUSIONS
  This method facilitates edentulous maxilla rehabilitation with removable prostheses. The conical crown concept presented resulted in stable complete-denture retention, reduced denture base, and improved oral hygiene.
authors.forename: Tammaro
authors.initials: T
authors.lastname: Eccellente
authors.forename: Michele
authors.initials: M
authors.lastname: Piombino
authors.forename: Adriano
authors.initials: A
authors.lastname: Piattelli
authors.forename: Emanuela
authors.initials: E
authors.lastname: D'Alimonte
authors.forename: Vittoria
authors.initials: V
authors.lastname: Perrotti
authors.forename: Giovanna
authors.initials: G
authors.lastname: Iezzi
mesh_terms: D000328:Adult; D000368:Aged; D000044:Dental Abutments; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003819:Denture Bases; D003779:Denture Design; D003781:Denture Retention; D003825:Denture, Complete, Immediate; D003827:Denture, Complete, Upper; D005260:Female; D005500:Follow-Up Studies; D005884:Gingival Hemorrhage / Q000209:etiology; D006801:Humans; D057893:Immediate Dental Implant Loading; D007575:Jaw, Edentulous / Q000534:rehabilitation* / Q000601:surgery; D008297:Male; D008437:Maxilla / Q000601:surgery*; D008875:Middle Aged; D016348:Osseointegration / Q000502:physiology; D057873:Peri-Implantitis / Q000209:etiology; D016019:Survival Analysis
chemical_list: D015921:Dental Implants