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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 5 (1990), No. 3     1. Sep. 1990
Int J Oral Maxillofac Implants 5 (1990), No. 3  (01.09.1990)

Page 272-281

The Applicability of Osseointegrated Oral Implants in the Rehabilitation of Partial Edentulism: A Prospective Multicenter Study on 558 Fixtures
van Steenberghe, Daniel / Lekholm, Ulf / Bolender, Charles / Folmer, Tiddo / Henry, Patrick / Herrmann, lrene / Higuchi, Kenji / Laney, William / Lindén, Ulf / Åstrand, Per
Nine clinical centers using the Brånemark System participated in a prospective study of 159 partially edentulous patients between 18 and 70 years of age. Clinical parameters evaluated were plaque index, gingivitis, pocket depth, bleeding index, tooth mobility, and stomatognathic function. Initially, 558 fixtures were placed and 521 remained in the study following prosthesis placement (199 prostheses in 154 patients). Fixtures were lost or unaccounted for because of nonintegration prior to prosthesis fabrication (19), patient withdrawal (11), prosthodontic reasons (6), and failure during prosthetic procedures (1). Failure was primarily attributable to unfavorable bone quality, sex (more in males), and smaller fixture size. Complications and failure related to other patient characteristics are presented. After 1 year of a 5-year study, preliminary results suggest that a success rate equal to or better than that obtained with edentulous patients may be expected.

Keywords: Brånemark System, oral implants, osseointegration, partial edentulism