Long-term clinical effectiveness of oral implants in the treatment of partial edentulism. Seven-year life table analysis of a prospective study with ITI dental implants system used for single-tooth restorations.
Long-term clinical effectiveness of oral implants in the treatment of partial edentulism. Seven-year life table analysis of a prospective study with ITI dental implants system used for single-tooth restorations.
复制标题
口腔种植体治疗部分缺牙症的长期临床疗效。
DOI：
10.1034/j.1600-0501.2002.130203.x
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发表时间：
2002
影响因子：
4.3
通讯作者：
G. Vogel
中科院分区：
文献类型：
--
作者：
E. Romeo;M. Chiapasco;M. Ghisolfi;G. Vogel
从1992年11月至2000年7月，对109例部分无牙颌患者（69例女性和40例男性;平均年龄41.3岁）的187个ITI种植体进行了前瞻性随访，以评估临床疗效和长期预后。在这187个种植体中，69.5%放置在下颌骨中，30.5%放置在上颌骨中。经过3 - 6个月的愈合期后，骨整合种植体（n = 184）用单冠修复。在加载固定装置之前，取出了3个植入物，并将其视为早期失效。每年对每个种植体进行临床和影像学重新评估。根据生命表方法审查了根据预定成功标准评价的调查结果。在随访期间，6例被认为是晚期失败。在这些病例中，均诊断为种植体周围组织化脓性感染：在一个种植体中，感染无法根除，种植体被取出。当11例脱落者纳入分析时，整个样本组的累积生存率和成功率分别为96.77%和93.6%。当仅考虑假体负载种植体时，累积存活率结果增加到99.35%，累积成功率增加到96.18%。对分类数据的分析显示，上颌矫正（存活率100%）的结果优于下颌矫正（存活率95.11%）。结论是，在标准解剖条件下（骨部位高度> 8 mm，厚度> 6 mm），ITI系统修复部分无牙颌患者可以被描述为一种长期可靠和有效的治疗方法。
One hundred and eight-seven ITI implants were prospectively followed from November 1992 to July 2000, in order to evaluate the clinical efficiency and the long-term prognosis in 109 partially edentulous patients (69 women and 40 men; average age 41.3 years). Of these 187 implants, 69.5% were placed in the mandible and 30.5% in the maxilla. After a healing period that ranged from three to six months, the osseointegrated implants (n = 184) were restored with single crowns. Three implants were extracted prior to loading the fixture and were considered early failures. Each implant was reassessed on a yearly basis, both clinically and radiographically. The results of the investigation, which were evaluated according to predefined success criteria, were reviewed in accordance with a life table method. During the follow-up, six cases were deemed to be late failures. In each of these cases, a suppurative infection of the peri-implant tissue was diagnosed: in one implant, the infection could not be eradicated and the implant was removed. When 11 drop-outs were included in the analysis, the cumulative survival and success rates for the whole sample group were 96.77% and 93.6%, respectively. When only prosthetically loaded implants were considered, the results increased to 99.35% for the cumulative survival rate and 96.18% for the cumulative success rate. The analysis on disaggregated data showed better results for maxillary restorations (survival rate 100%) in comparison to mandible restorations (survival rate 95.11%). It was concluded that, under standard anatomic conditions (bone site height > 8 mm, thickness > 6 mm), prosthetic restoration of partially edentulous patients with the ITI system can be described as a reliable and efficient therapy in the long term.