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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 11 (1996), No. 5     1. Sep. 1996
Int J Oral Maxillofac Implants 11 (1996), No. 5  (01.09.1996)

Page 581-588

Survival of 1,920 IMZ Implants Followed for up to 100 Months
Haas, Robert / Mensdorff-Pouilly, Nikoletta / Mailath, Georg / Watzek, Georg
A total of 1,920 IMZ implants, placed between March 1984 and December 1993, were evaluated retrospectively. The Kaplan-Meier cumulative survival rate of the implants was 89.9% after 60 months and 83.2% after 100 months. Life table analysis revealed a statistically significantly lower cumulative survival rate for maxillary implants (71.6% at 60 months and 37.9% at 100 months) than for mandibular implants (90.4% at 100 months). Implants placed in the anterior region of the maxilla failed significantly more often than those placed in the posterior region. This was not observed in the mandible. The age and sex of the patients, the status of the jaw (edentulous, partially edentulous), the time of implant placement in relation to tooth extraction, and the length and diameter of the implants had no statistically significant influence on the cumulative survival rate.

Keywords: IMZ implant, life table analysis, success rate