title: Analysis of 356 pterygomaxillary implants in edentulous arches for fixed prosthesis anchorage.
abstract: One thousand eight hundred seventeen implants were placed in the completely edentulous maxillae of 189 patients (122 female; 67 male). The patients' mean age was 60 years (range 28 to 91 years). Three hundred fifty-six of the 1,817 implants were placed in the pterygomaxillary area, and all patients were restored with complete-arch fixed detachable prostheses. The mean number of implants per maxillary prosthesis was 9.0 (range 6 to 15). During stage II surgery and before loading, 41 pterygomaxillary implants (11.5%) were not osseointegrated and were removed. After a mean loading period of 4.68 years (range 0.06 to 9.20 years), 1 additional pterygomaxillary implant was lost. Altogether, 42 of 356 pterygomaxillary implants (11.8%) were removed. Survival rates according to implant size, bone quality, and tooth position were also recorded. This study illustrates a cumulative survival rate of 88.2% for pterygomaxillary site implant placement in edentulous maxillary arches.
authors.affiliation: Institute for Facial Esthetics, Prosthodontics Intermedica, Fort Washington, Pennsylvania, USA.
authors.forename: T J
authors.initials: TJ
authors.lastname: Balshi
authors.forename: G J
authors.initials: GJ
authors.lastname: Wolfinger
authors.forename: S F
authors.initials: SF
authors.lastname: Balshi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D005260:Female; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D008297:Male; D008437:Maxilla / Q000601:surgery*; D008875:Middle Aged; D012189:Retrospective Studies; D013100:Sphenoid Bone / Q000601:surgery*; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants