Department of Oral & Maxillofacial Prosthodontics and Implantology, The University of Tokushima, Institute of Health Biosciences, 3-18-15 Kuramoto, Tokushima 770-8504, Japan.
J Prosthodont Res. 2011 Jul;55(3):141-5. doi: 10.1016/j.jpor.2010.10.004. Epub 2011 Feb 5.
The purpose of this retrospective study was to assess the implant survival rate and the risk factors associated with implant failure in patients who had undergone immediate implant restoration.
We performed a retrospective review and an outcome assessment of all patients who received immediate implant restoration between 2000 and 2010 in our department at Tokushima University Hospital. The patients were divided into groups on the basis of the predictor variables: age, gender, implant location, and number of implants per jaw. The cumulative implant survival rate in the paired groups was determined by using Kaplan-Meier analysis and the log-rank test. Cox proportional hazards model was subsequently used to identify exposures associated with implant failure.
Using the Kaplan-Meier method, the survival rates at 1, 3, and 9 years were calculated to be 98.8%, 98.0%, and 94.7%, respectively. No statistically significant association was observed between the implant survival rates and the predictor variables: gender, age, location, and number of implants.
Immediate implant restoration is a reliable prosthetic procedure with an acceptable survival rate compared to the conventional implant procedure.
本回顾性研究旨在评估接受即刻种植修复患者的种植体存活率及其失败的相关风险因素。
我们对我院口腔颌面外科自 2000 年至 2010 年期间行即刻种植修复的所有患者进行回顾性研究和疗效评估。根据预测变量（年龄、性别、种植体部位和每颌种植体数量）将患者分为几组。采用 Kaplan-Meier 分析法和对数秩检验确定配对组中的累积种植体存活率。随后采用 Cox 比例风险模型来确定与种植体失败相关的暴露因素。
采用 Kaplan-Meier 法计算的 1、3、9 年的存活率分别为 98.8%、98.0%和 94.7%。种植体存活率与预测变量（性别、年龄、部位和种植体数量）之间无统计学显著相关性。
即刻种植修复是一种可靠的修复方法，与传统种植体修复程序相比，其存活率可接受。
