University of Verona, Faculty of Medicine, Dentistry and Maxillofacial Surgery Clinic, Verona, Italy.
Int J Oral Maxillofac Implants. 2011 Mar-Apr;26(2):393-403.
The aim of this multicenter prospective study was to provide data from a case series supporting the use of short dental implants with oxidized surfaces to treat partially edentulous patients.
The implants used had an oxidized surface, a tapered design, and a short length (8.5 mm or shorter). All implants were placed in posterior edentulous areas that were affected by high bone resorption (available bone height < 10 mm). Implant success was established according to predetermined criteria.
Records were available for 107 implants used to treat 46 patients (69.2% were 7 mm long, and 30.8% were 8.5 mm long); 80.4% were placed in the posterior mandible, and 19.6% were placed in the posterior maxilla. With regard to restorations, 27.1% of implants were restored with single crowns, 16.8% with a single cantilever, and 56.1% with fixed prostheses. After a 1- to 3- year follow-up, 105 implants are still functioning; only 2 implants have been lost, for a survival rate of 98.1%. In all, 4 of the 107 implants placed failed to meet the success criteria, resulting in a success rate of 96.3%. The mean marginal bone loss was 0.6 ± 0.2 mm.
The results of this study suggest that short oxidized implants should be regarded as a possible solution for the restoration of posterior teeth in highly resorbed areas.
这项多中心前瞻性研究的目的是提供一系列病例数据，以支持使用具有氧化表面的短种植体来治疗部分缺牙患者。
使用的种植体具有氧化表面、锥形设计和短长度（8.5 毫米或更短）。所有种植体均放置在后牙缺失区域，这些区域受到严重的骨吸收影响（可用骨高度<10 毫米）。根据预定标准确定种植体的成功。
记录了 107 个用于治疗 46 名患者的种植体的使用情况（69.2%为 7 毫米长，30.8%为 8.5 毫米长）；80.4%放置在下颌后牙区，19.6%放置在上颌后牙区。关于修复体，27.1%的种植体采用单冠修复，16.8%采用单悬臂修复，56.1%采用固定修复体。经过 1-3 年的随访，105 个种植体仍在正常使用，仅 2 个种植体脱落，存活率为 98.1%。总共，107 个种植体中有 4 个未达到成功标准，成功率为 96.3%。平均边缘骨丧失为 0.6±0.2 毫米。
本研究结果表明，短氧化种植体可被视为高度吸收区域后牙修复的一种可能解决方案。
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