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..
Department of Developmental and Surgical Sciences, Division of Periodontology, School of Dentistry, University of Minnesota, 515 Delaware Street SE, Minneapolis, MN,55455, USA.
J Stomatol Oral Maxillofac Surg. 2023 Apr;124(2):101314. doi: 10.1016/j.jormas.2022.10.013. Epub 2022 Oct 22.
The purpose of the present study was to retrospectively 1) investigate the association between implant-, patient- and bone-related parameters with the risk of implant failure; 2) analyze the survival rates of dental implants placed in a university clinical setting.
Data were retrieved from patient charts from the University of Minnesota School of Dentistry to identify patients older than 18 years of age who received dental implant treatment by faculty, residents or students in the university dental clinics. Implant-, patient- and bone-related parameters such as implant system, length, diameter, jaw, region, installation protocol, gender, smoking, medical history, history of periodontal disease, self-reported oral parafunctions, type of bone, and operator were manually retrieved and analyzed.
Five hundred and fifty-three implants were randomly selected from a total of 4,424. Of these 553 implants, 440 (79.6%) were associated with a >10 mm length, 371 (67.1%) with a >4 mm diameter and 431 (77.9%) had replaced a single tooth. Submerged healing mode was followed in 363 (65.6%) of the implants with the mean healing time being 3.2 months. History of periodontal disease was identified in 294 (53.2%) of these cases. A total of 17 implants failed after a mean time of 6.29 ± 6.75 months, resulting in an overall survival rate of 96.9%. Based on a univariate analysis, implant system, operator, time between extraction and implant surgery, time between bone grafting and implant placement, tobacco use as well as clenching and grinding were considered potential implant failure predictors and were further included in the multivariate logistic regression analysis. Tobacco use (p < 0.001) was significantly associated with implant failure.
Within the limitations of this retrospective randomly selected university-treated sample tobacco use increased the risk for implant failure. Failure occurred in 17 implants representing a 3.1% failure rate.
本研究的目的是回顾性地1）调查种植体、患者和骨相关参数与种植体失败风险之间的关联；2）分析在大学临床环境中植入的牙种植体的存活率。
从明尼苏达大学牙科学院的患者病历中检索数据，以确定年龄超过18岁且在大学牙科诊所接受教师、住院医师或学生进行牙种植治疗的患者。手动检索并分析种植体、患者和骨相关参数，如种植体系统、长度、直径、颌骨、区域、植入方案、性别、吸烟、病史、牙周病史、自我报告的口腔副功能、骨类型和操作者。
从总共4424颗种植体中随机选择了553颗。在这553颗种植体中，440颗（79.6%）长度大于10毫米，371颗（67.1%）直径大于4毫米，431颗（77.9%）替换了单颗牙齿。363颗（65.6%）种植体采用潜入式愈合模式，平均愈合时间为3.2个月。在这些病例中，294例（53.2%）有牙周病史。共有17颗种植体在平均6.29±6.75个月后失败，总存活率为96.9%。基于单因素分析，种植体系统、操作者、拔牙与种植手术之间的时间、骨移植与种植体植入之间的时间、吸烟以及紧咬和磨牙被认为是潜在的种植体失败预测因素，并进一步纳入多因素逻辑回归分析。吸烟（p<0.001）与种植体失败显著相关。
在这个回顾性随机选择的大学治疗样本的局限性内，吸烟增加了种植体失败的风险。17颗种植体发生失败，失败率为3.1%。
