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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 14 (1999), No. 3     15. June 1999
Int J Oral Maxillofac Implants 14 (1999), No. 3  (15.06.1999)

Page 398-406

Analysis of 356 Pterygomaxillary Implants in Edentulous Arches for Fixed Prosthesis Anchorage
Balshi, Thomas J. / Wolfinger, Glenn J. / Balshi, Stephen F.
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.

Keywords: Brånemark implants, complete-arch fixed detachable prostheses, osseointegration, pterygomaxillary, survival rate, tuberosity