Department of Prosthodontics, Dental Caries Prevention Research Center, Qazvin University of Medical Sciences, Qazvin, Iran.
Department of Prosthodontics, Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran.
J Indian Prosthodont Soc. 2021 Oct-Dec;21(4):420-424. doi: 10.4103/jips.jips_96_21.
Bacterial micro leakage at implant-abutment interface under functional loading is an important factor, may lead to crestal bone loss and affect the long term success of dental implants. Due to the limited studies about the implant systems with a connection of Slip joint design, this study aimed to evaluate the effect of dynamic loading on bacterial leakage at the implant-abutment interface with slip joint connection.
In vitro- comparative study.
A total of 20 implants and abutments with slip joint connections (Tapered Screw-Vent, 3.7 mm ×10 mm, Zimmer Dental, USA) was examined and depends on using functional loading were divided into two groups; loaded and unloaded. Initially, 10 μl of Brain Heart Infusion (BHI) culture broth was pipetted to the internal lumen of each implant, then the abutments were tightened to the fixtures and crowns were cemented. In the unloaded group, samples were immersed in E-Coli suspension for 5 days. In the loaded group, samples were immersed in microbial suspension under 500000 cycles using a cyclic load device. Following disconnection of fixtures and abutments, microbial samples were taken from the internal lumen of implants and colonies were counted. Data were analyzed using.
Mann-Whitney statistical test, SPSS version 24.
The mean rate of micro leakage in unloaded and loaded groups was 4000 CFU/ml and 27000 ± 31640 CFU/ml respectively. Bacterial colonies grew in 10% of unloaded samples and 50% of loaded samples. This difference was statistically significant. (P < 0.05).
Microbial micro leakage at the implant-abutment interface with slip joint design increased significantly after functional loading.
在功能负载下，种植体-基台界面的细菌微渗漏是一个重要因素，可能导致牙槽骨嵴顶吸收，影响牙种植体的长期成功。由于对具有滑动接头设计的种植系统的研究有限，本研究旨在评估动态负载对具有滑动接头连接的种植体-基台界面细菌渗漏的影响。
体外比较研究。
共检查了 20 个带有滑动接头连接（锥形螺丝-通风口，3.7mm×10mm，Zimmer Dental，美国）的种植体和基台，并根据使用功能负载分为两组；加载组和未加载组。最初，将 10μl 的脑心浸液（BHI）培养液吸入每个种植体的内部管腔，然后将基台拧紧到种植体上，并将牙冠粘接到种植体上。在未加载组中，样本在大肠杆菌悬浮液中浸泡 5 天。在加载组中，样本在循环加载装置下浸泡在 500000 次微生物悬浮液中。在分离种植体和基台后，从种植体的内部管腔中取出微生物样本并计算菌落数。数据使用 Mann-Whitney 统计检验进行分析，使用 SPSS 版本 24。
未加载组和加载组的微渗漏平均率分别为 4000CFU/ml 和 27000±31640CFU/ml。未加载组的 10%样本和加载组的 50%样本中生长出细菌菌落。这种差异具有统计学意义（P<0.05）。
具有滑动接头设计的种植体-基台界面的微生物微渗漏在功能负载后显著增加。
