Vörös Ádám, Kulcsár Klaudia, Pammer Dávid, Zsoldos Ibolya
Department of Materials Science and Technology, Széchenyi István University, 9026 Győr, Hungary.
Alba Regia Technical Faculty, Óbuda University, 8000 Székesfehérvár, Hungary.
J Funct Biomater. 2025 Aug 22;16(9):306. doi: 10.3390/jfb16090306.
During the investigation, the effect of screw tightening torque on the potential loosening of screws under load was examined in the case of custom-made subperiosteal implants. The study focused on the connection screws between the implant components, testing the commonly applied tightening torques of 15 Ncm and 30 Ncm. Mastication was simulated using a custom-designed, PLC-controlled testing device, which allowed for the reproduction of variable numbers, forces, and speeds of bite cycles. With this device, six different scenarios were tested, including 500, 2000, and 10,000 bite cycles, under both constant and variable bite forces. A caliper was used to record potential length changes of the screws, force sensors measured the bite forces, and calibrated torque screwdrivers were used to verify the loosening torques. Based on the analysis of the measured data, it was concluded that for the M1.8 screws tested, a tightening torque of 15 Ncm does not provide sufficient resistance against loosening, whereas 30 Ncm offers adequate stability.
在调查过程中，针对定制的骨膜下植入物，研究了螺钉拧紧扭矩对负载下螺钉潜在松动的影响。该研究聚焦于植入物组件之间的连接螺钉，测试了15 Ncm和30 Ncm这两种常用的拧紧扭矩。使用定制设计的、由可编程逻辑控制器（PLC）控制的测试装置模拟咀嚼过程，该装置能够再现不同数量、力度和速度的咬合循环。借助此装置，在恒定和可变咬合力条件下，测试了六种不同场景，包括500次、2000次和10000次咬合循环。使用卡尺记录螺钉的潜在长度变化，力传感器测量咬合力，并使用校准的扭矩螺丝刀验证松动扭矩。基于对测量数据的分析，得出结论：对于所测试的M1.8螺钉，15 Ncm的拧紧扭矩不能提供足够的抗松动阻力，而30 Ncm则能提供足够的稳定性。
