Temporomandibular Joint Clinic, Niigata University Medical and Dental Hospital, Niigata, Japan; Oral Implant Clinic, Niigata University Medical and Dental Hospital, Niigata, Japan.
Temporomandibular Joint Clinic, Niigata University Medical and Dental Hospital, Niigata, Japan; Oral Implant Clinic, Niigata University Medical and Dental Hospital, Niigata, Japan.
J Prosthodont Res. 2018 Jul;62(3):365-369. doi: 10.1016/j.jpor.2018.01.004. Epub 2018 Mar 9.
This study analyzed risk factors for post-loading implant loss in cases of implant-supported prostheses applied to edentulous jaws of Japanese patients.
In total, 245 dental implant fixtures placed in 54 edentulous jaws of 46 patients performed at Niigata University Hospital were retrospectively analyzed. Kaplan-Meier curves were used to estimate the cumulative survival rate (SR) of implants, and multiple Cox regression analysis was used to identify predictive factors of implant loss. The following risk factors for implant failure were examined: age, sex, survival time, implant length, implant location, smoking habit, bone density, bone augmentation, opposing dentition, loading period, and type of final restoration. The Cochran-Mantel-Haenszel test was used to examine difference in survival curves of the extracted predictors.
Sixteen implants failed during the observation period (SR=92.8 %). Multiple Cox regression analysis revealed that male sex [hazard ratio (HR)=16.1; p=0.007] and use of maxillary removable restorations (HR=12.7; p<0.000) were risk factors for implant failure. Other factors had no significant effect on implant failure. The SR of implants for males (SR=86.9%) was significantly lower than that for females (SR=99.1%). The SR of implants for maxillary removable restorations (SR=76.4%) was significantly lower than for maxillary fixed restorations (SR=99.1%) and mandibular fixed restorations (SR=97.8%).
Maxillary implants with removable restorations and male sex were risk factors for implant failure among Japanese edentulous patients.
本研究分析了日本无牙颌患者种植体支持义齿负荷后种植体丢失的风险因素。
回顾性分析了在新泻大学医院进行的 46 名患者的 54 个无牙颌中植入的 245 个牙科种植体。Kaplan-Meier 曲线用于估计种植体的累积生存率（SR），并使用多 Cox 回归分析来确定种植体丢失的预测因素。检查了以下与种植体失败相关的风险因素：年龄、性别、生存时间、种植体长度、种植体位置、吸烟习惯、骨密度、骨增量、对颌牙、负荷期和最终修复体类型。Cochran-Mantel-Haenszel 检验用于检验提取预测因素的生存曲线差异。
在观察期间有 16 个种植体失败（SR=92.8%）。多 Cox 回归分析显示，男性性别（HR=16.1；p=0.007）和上颌可摘义齿修复（HR=12.7；p<0.000）是种植体失败的危险因素。其他因素对种植体失败没有显著影响。男性种植体的 SR（SR=86.9%）明显低于女性（SR=99.1%）。上颌可摘义齿修复的种植体 SR（SR=76.4%）明显低于上颌固定修复体（SR=99.1%）和下颌固定修复体（SR=97.8%）。
对于日本无牙颌患者，上颌带可摘义齿修复和男性性别是种植体失败的危险因素。
