Abstract：
The purpose of this paper was to retrospectively assess the local factors that are likely to be associated with the risks for one-year dental implant loss.A retrospective study was designed and implemented. The sample consisted of patients who underwent an implant loss or removal caused by peri-implantitis or infection after prosthesis loading. The chi-squared test and generalised estimating equations (GEE) were used to explore the potential risk factors for one-year implant loss. A total of 279 patients with 287 failed implants were enrolled in this study. Immediate implant placement exhibited a 3.373 (95% CI: 1.652 to 6.886) significantly increased risk to experience one-year implant loss than early and late implant placement (p = 0.001). In addition, implants loaded during a healing period fewer than two months after implant placement were at 18.139 (95% CI: 8.925 to 36.866) significantly higher risk of one-year implant loss when compared with those that loaded within more than two months after implant placement (p < 0.001). Smokers were 1.866 (OR = 1.866,95% CI: 0.993 to 3.510) times as high risk for one-year implant loss as non-smokers, but there were no significant statistical differences (p = 0.053). Immediate implant placement and early implant loading were considered risk factors for one-year implant loss.
摘要：
本文的目的是回顾性评估可能与一年牙种植体丢失风险相关的局部因素。设计并实施了一项回顾性研究。样本包括在假体加载后由种植体周围炎或感染引起的植入物丢失或移除的患者。卡方检验和广义估计方程（GEE）用于探索一年植入物损失的潜在风险因素。本研究共纳入279例患者，其中287例植入物失败。与早期和晚期植入物放置相比，立即植入物放置显示出3.373（95％CI：1.652至6.886）显着增加了一年植入物丢失的风险（p=0.001）。此外,在植入后不到2个月的愈合期内加载的植入物与植入后2个月内加载的植入物相比,1年植入物丢失的风险显著较高(P<0.001).吸烟者一年植入物丢失的风险是非吸烟者的1.866倍（OR=1.866,95％CI：0.993至3.510），但差异无统计学意义(p=0.053)。立即放置植入物和早期植入物负荷被认为是一年植入物丢失的危险因素。
