Haas R, Mensdorff-Pouilly N, Mailath G, Watzek G
Department of Oral Surgery, University of Vienna, School of Dentistry, Austria.
Int J Oral Maxillofac Implants. 1996 Sep-Oct;11(5):581-8.
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.
对1984年3月至1993年12月期间植入的1920颗IMZ种植体进行了回顾性评估。种植体的Kaplan-Meier累积生存率在60个月后为89.9%，在100个月后为83.2%。生命表分析显示，上颌种植体的累积生存率（60个月时为71.6%，100个月时为37.9%）在统计学上显著低于下颌种植体（100个月时为90.4%）。植入上颌前部区域的种植体失败的频率明显高于植入后部区域的种植体。在下颌未观察到这种情况。患者的年龄和性别、颌骨状况（无牙、部分无牙）、种植体植入与拔牙的时间关系以及种植体的长度和直径对累积生存率没有统计学上的显著影响。
