School of Dentistry Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Via Consolare Valeria, 1, 98125 Messina, Italy.
Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy.
Biomed Res Int. 2022 Apr 21;2022:9720488. doi: 10.1155/2022/9720488. eCollection 2022.
The use of dental implants in oral rehabilitations has become increasingly common, thanks to the safety and predictability of these rehabilitations. Unfortunately, dental implants, being alloplastic devices, are not free from biomechanical complications, especially in the case in which the connections are complex and involve several components. The aim of the study is to highlight what could be surface alterations using different screwing torques, or by repeating the screwing process several times. In this study, 40 passant screws (Osstem®, South Korea Dental Implant Ebony Gold®) were examined under a Zeiss EVO LS 10 scanning electron microscope (SEM), operating with an accelerating voltage of 20 kV. Passant screws were subdivided into 4 groups: 30 Nmm tightening torque; maximum tightening torque; 2 times 30 Nmm tightening torque; no screwing, new ones (control group). There are no significant differences in the surfaces of the passant screws in SEM images, and the 100% of the passant screws is free of defects or fractures. Surely, further studies and investigations will certainly be needed to allow improvement of these devices.
由于这些修复体的安全性和可预测性，口腔修复中使用牙种植体已经变得越来越普遍。不幸的是，牙种植体作为一种异体装置，并非没有生物力学并发症，特别是在连接复杂并涉及多个组件的情况下。本研究旨在强调在使用不同的旋拧扭矩或多次重复旋拧过程时可能会出现的表面变化。在这项研究中，使用蔡司 EVO LS 10 扫描电子显微镜（SEM）检查了 40 个 Passant 螺钉（Osstem®，韩国牙科植入物 Ebony Gold®），操作时加速电压为 20 kV。Passant 螺钉分为 4 组：30 Nmm 拧紧扭矩；最大拧紧扭矩；2 次 30 Nmm 拧紧扭矩；不旋拧，新的（对照组）。在 SEM 图像中，Passant 螺钉的表面没有明显差异，并且 100%的 Passant 螺钉没有缺陷或断裂。当然，为了改进这些设备，肯定还需要进一步的研究和调查。
