Quirynen M, Naert I, van Steenberghe D, Nys L
Department of Periodontology, Faculty of Medicine, Catholic University of Leuven, Belgium.
J Prosthet Dent. 1992 Oct;68(4):655-63. doi: 10.1016/0022-3913(92)90383-l.
Ninety-one consecutive edentulous patients who had been treated by means of fixed prostheses (n = 103) supported by Brånemark implants (n = 589) were examined. Eighteen fixtures (3%) failed to integrate. After a mean loading time of 32 (range 6 to 80) and 38 months (range 5 to 83) for fixtures in the maxilla and mandible, respectively, an additional 12 fixtures lost integration. The cumulative failure rate for individual fixtures after 6 years was 8.4% and 5% for maxillae and mandibles, respectively. Only one patient had to revert to complete dentures. For fixtures in the maxillae, the mean marginal bone loss was 0.7, 0.1, and 0.2 mm for each of the first 3 years of loading, respectively; for fixtures in mandibles, the corresponding values were 0.7, 0.2, and 0.1 mm. The loss in marginal bone height was equal in both jaws and was not related to bleeding on probing or to the preoperative resorption anatomy.
对91例连续的无牙患者进行了检查，这些患者接受了由Brånemark种植体（共589颗）支持的固定修复体治疗（共103例）。18颗种植体（3%）未能成功骨结合。上颌种植体和下颌种植体的平均加载时间分别为32个月（范围6至80个月）和38个月（范围5至83个月），之后又有12颗种植体失去骨结合。6年后，上颌和下颌种植体的个体累积失败率分别为8.4%和5%。只有1例患者不得不重新佩戴全口义齿。对于上颌种植体，加载的前3年每年平均边缘骨吸收分别为0.7、0.1和0.2mm；对于下颌种植体，相应数值分别为0.7、0.2和0.1mm。上下颌的边缘骨高度丧失相等，且与探诊出血或术前吸收解剖结构无关。
