回顾性临床研究：988 颗双重酸蚀种植体在移植骨和自体骨中用于单牙种植修复。

Retrospective clinical study of 988 dual acid-etched implants placed in grafted and native bone for single-tooth replacement.

机构信息

Department of Prosthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil.

出版信息

Int J Oral Maxillofac Implants. 2012 Sep-Oct;27(5):1243-8.

Abstract

PURPOSE

To evaluate the influence of sex, implant characteristics, and bone grafting on the survival rate of dual acid-etched (DAE) implants.

MATERIALS AND METHODS

Patients treated with internal-hex DAE implants for single tooth replacement in a military dental clinic between January 2005 and December 2010 were included in this study. Clinical data related to implant characteristics, implant location, presence of grafted bone, and implant failures were collected. The primary outcome was implant loss. The survival rate was analyzed using the Kaplan-Meier method. Cox regression modeling was used to determine which factors would predict implant failure.

RESULTS

DAE implants were evaluated in a total of 988 patients (80.3% men). Twenty-four (2.4%) implants failed, most were cylindric (54.2%) with regular platforms (70.8%) and were 10 mm long (58.3%). The failure rate was 2.4% for the anterior maxilla, 3.3% for the posterior maxilla, 1.6% for the anterior mandible, and 2.0% for posterior mandible. The cumulative survival rate was 97.6%. The failure rate was 8.8% in implants placed after sinus augmentation, 7.3% in bone block-grafted areas, and 1.6% in native bone. Based on multivariable analysis (Cox regression), sinus augmentation and bone block grafting had a statistically significant effect on implant failure; the hazard ratios were 5.5 and 4.6, respectively.

CONCLUSION

The results revealed that DAE implants had high survival rates, and no influence of sex, location, shape, diameter, or length on failure rates could be observed. However, a significant association was observed between failure and presence of bone graft in the implant area.

摘要

目的

评估性别、种植体特征和植骨对双重酸蚀（DAE）种植体存活率的影响。

材料与方法

本研究纳入了 2005 年 1 月至 2010 年 12 月期间在一家军事牙科诊所接受内部六角形 DAE 种植体单牙修复的患者。收集了与种植体特征、种植体位置、是否存在移植骨以及种植体失败相关的临床数据。主要结果是种植体丢失。使用 Kaplan-Meier 方法分析存活率。Cox 回归模型用于确定哪些因素会预测种植体失败。

结果

总共评估了 988 名患者（80.3%为男性）的 DAE 种植体。24 个（2.4%）种植体失败，其中大多数为圆柱形（54.2%），具有常规平台（70.8%），长度为 10 毫米（58.3%）。前上颌的失败率为 2.4%，上颌后区为 3.3%，下颌前区为 1.6%，下颌后区为 2.0%。累积存活率为 97.6%。在接受窦提升后植入的种植体中，失败率为 8.8%，在骨块移植区域中为 7.3%，在原生骨中为 1.6%。基于多变量分析（Cox 回归），窦提升和骨块移植对种植体失败有统计学显著影响；风险比分别为 5.5 和 4.6。