Chatzopoulos Georgios S, Wolff Larry F
Department of Developmental and Surgical Sciences, Division of Periodontology, School of Dentistry, University of Minnesota, 515 Delaware Street SE, Minneapolis, MN,55455, USA.
Department of Preventive Dentistry, Periodontology and Implant Biology, School of Dentistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
J Clin Exp Dent. 2023 Mar 1;15(3):e195-e204. doi: 10.4317/jced.60171. eCollection 2023 Mar.
To retrospectively assess the failure rate of implants placed in augmented and non-augmented sites and to investigate whether the time of implant and bone placement are associated with the risk of implant failure in a university setting.
In this retrospective study, data were retrieved from the electronic patient database of the University of Minnesota School of Dentistry, USA to identify patients older than 18 years of age who received dental implant treatment. Patient characteristics and the adequacy of available bone were retrieved from the patients' dental records and analyzed. Performing sinus lift and/or alveolar ridge augmentation in stages or simultaneously with implant placement and the need for multiple bone regeneration procedures were recorded. Kaplan-Meier plots and Cox regression models were created to analyze the data.
Data from 553 implants were analyzed in the study. More than half of the implants were placed in the maxilla (56.8%) and posterior regions (74.3%). The overall survival rate was 96.9%. Sinus augmentation was performed in 19.5% of the cases, while in 12.1% of the included treatments an implant was placed simultaneously. Staged and simultaneous ridge augmentation occurred in 45.2% and 18.8% of the cases, respectively. Implants placed in an area following (=0.018) or simultaneously (=0.025) with sinus augmentation showed a significantly reduced survival. Cox regression analysis showed that smoking and simultaneous ridge augmentation and implant placement increased failure rates.
Within the limitations of this study, implants placed in tobacco users as well as in augmented maxillary sinuses, simultaneously or in stages, and in augmented ridges lead to higher implant failure rates. Bone grafting, dental implant, osseointegration, risk factor, survival rate, treatment outcome.
回顾性评估种植于增量和非增量部位的种植体失败率，并研究在大学环境中种植体植入时间和骨植入时间是否与种植体失败风险相关。
在这项回顾性研究中，从美国明尼苏达大学牙科学院的电子患者数据库中检索数据，以确定接受牙种植治疗的18岁以上患者。从患者的牙科记录中检索患者特征和可用骨的充足情况并进行分析。记录是否分阶段或与种植体植入同时进行上颌窦提升和/或牙槽嵴增量以及是否需要多次骨再生手术。创建Kaplan-Meier曲线和Cox回归模型来分析数据。
本研究分析了553颗种植体的数据。超过一半的种植体植入在上颌（56.8%）和后部区域（74.3%）。总体生存率为96.9%。19.5%的病例进行了上颌窦增量，而在12.1%的纳入治疗中同时植入了种植体。分阶段和同时进行牙槽嵴增量分别发生在45.2%和18.8%的病例中。在上颌窦增量之后（=0.018）或同时（=0.025）植入的种植体生存率显著降低。Cox回归分析表明，吸烟、同时进行牙槽嵴增量和种植体植入会增加失败率。
在本研究的局限性内，种植于吸烟者以及分阶段或同时种植于增量上颌窦和增量牙槽嵴的种植体失败率更高。骨移植、牙种植、骨整合、危险因素、生存率、治疗结果。
