Christoph Mautsch, Stefan Wolfart, Walter Mautsch, Anne Barbara Rittich
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引用次数: 0
Abstract
Purpose: To evaluate the radiographic and peri-implant outcomes of intramobile cylinder implants (IMZs) and the feasibility of long-term follow-up studies after nearly 30 years.
Methods: Of the 94 patients treated with IMZ implants between 1981 and 1995, 39 patients were successfully contacted (contact group, CG), of which 15 patients with a total of 32 implants agreed to participate in the present follow-up study (clinical evaluation group, CEG). The overall implant survival rate was calculated. Information on implant status and oral and general health data was collected. Marginal bone level was evaluated and then compared to the patients' baseline data. Possible risk factors for peri-implantitis were also identified.
Results: In total, 16 implants in seven patients were lost, amounting to an overall survival rate of 79.5% after 30 years with a mean follow-up time of 24 ± 10 years (CG). Eight patients were treated with bar-retained mandibular overdentures and seven patients had fixed partial dentures. After a mean observation time of 29 ± 3 years, the surviving implants showed a peri-implantitis rate of 9.4% with a mean marginal bone loss of 2.5 ± 1.8 mm (CEG). No significant correlation between peri-implantitis and possible risk factors could be found.
Conclusions: Long-term follow-up studies with acceptable response rates after nearly 30 years are not feasible. Contact was only possible with 41% of the patients. This contact group showed a high implant survival rate. Due to the retrospective study design, additional risk factors could not be considered in a conclusive analysis.
目的:评价活动内圆柱种植体(IMZs)近30年的影像学及种植体周围预后,并探讨长期随访研究的可行性。方法:在1981 ~ 1995年使用IMZ种植体治疗的94例患者中,成功联系39例患者(接触组,CG),其中15例患者共32个种植体同意参与本随访研究(临床评价组,CEG)。计算种植体整体存活率。收集了有关种植体状况以及口腔和一般健康数据的信息。评估边缘骨水平,然后与患者的基线数据进行比较。种植体周围炎的可能危险因素也被确定。结果:7例患者共丢失16颗种植体,30年总生存率79.5%,平均随访时间24±10年(CG)。8例患者采用牙棒保留下颌覆盖义齿,7例患者采用固定局部义齿。平均观察29±3年,存活种植体的种植体周围炎发生率为9.4%,平均边缘骨损失为2.5±1.8 mm (CEG)。种植体周围炎与可能的危险因素没有明显的相关性。结论:长期随访研究在近30年后的有效率是不可接受的。只有41%的患者有接触的可能。这个接触组显示出较高的种植成活率。由于采用回顾性研究设计,在结论性分析中不能考虑其他危险因素。
期刊介绍:
The International Journal of Implant Dentistry is a peer-reviewed open access journal published under the SpringerOpen brand. The journal is dedicated to promoting the exchange and discussion of all research areas relevant to implant dentistry in the form of systematic literature or invited reviews, prospective and retrospective clinical studies, clinical case reports, basic laboratory and animal research, and articles on material research and engineering.