Mahendra Jaideep, Chand Yemineni Bhavan, Mahendra Little, Fageeh Hytham N, Fageeh Hammam Ibrahim, Ibraheem Wael, Alzahrani Khaled M, Alqahtani Nasser M, Alahmari Nasser Mesfer, Almagbol Mohammad, Robaian Ali, Jigeesh Nasina, Varadarajan Saranya, Balaji Thodur Madapusi, Patil Shankargouda
Department of Periodontics, Meenakshi Ammal Dental College and Hospital, Chennai 600095, India.
Department of Dental and Oral Surgery, ASRAM Medical College, Hospital & Research Centre, West Godavari District, Eluru 534005, India.
Materials (Basel). 2021 Dec 9;14(24):7547. doi: 10.3390/ma14247547.
Conventional osteotomy techniques can, in some cases, induce higher stress on bone during implant insertion as a result of higher torque. The aim of the present study was to evaluate and compare the stress exerted on the underlying osseous tissues during the insertion of a tapered implant using different osteotomy techniques through a dynamic finite element analysis which has been widely applied to study biomedical problems through computer-aided software. In three different types of osteotomy techniques, namely conventional (B1), bone tap (B2), and countersink (B3), five models and implants designed per technique were prepared, implant insertion was simulated, and stress exerted by the implant during each was evaluated. Comparison of stress scores on the cortical and cancellous bone at different time points and time intervals from initiation of insertion to the final placement of the implant was made. There was a highly statistically significant difference between B1 and B2 ( = 0.0001) and B2 and B3 ( = 0.0001) groups. In contrast, there was no statistically significant difference in the stress scores between B1 and B3 ( = 0.3080) groups at all time points of implant placement. Overall, a highly significant difference was observed between the stresses exerted in each technique. Within the limitations of our study, bone tap significantly exerted lesser stresses on the entire bone than conventional and countersink type of osteotomy procedures. Considering the stress distribution at the crestal region, the countersink showed lower values in comparison to others.
在某些情况下，传统的截骨术由于扭矩较高，在种植体植入过程中会对骨骼产生更大的应力。本研究的目的是通过动态有限元分析来评估和比较使用不同截骨术植入锥形种植体时对下方骨组织施加的应力，这种分析已广泛应用于通过计算机辅助软件研究生物医学问题。针对三种不同类型的截骨术，即传统截骨术（B1）、骨钻截骨术（B2）和埋头钻截骨术（B3），每种技术制备了五个模型和种植体，模拟种植体植入过程，并评估每种情况下种植体施加的应力。对从植入开始到种植体最终就位的不同时间点和时间间隔内皮质骨和松质骨上的应力得分进行了比较。B1组和B2组（P = 0.0001）以及B2组和B3组（P = 0.0001）之间存在高度统计学显著差异。相比之下，在种植体植入的所有时间点，B1组和B3组（P = 0.3080）的应力得分没有统计学显著差异。总体而言，观察到每种技术施加的应力之间存在高度显著差异。在我们研究的局限性内，骨钻截骨术对整个骨骼施加的应力明显小于传统截骨术和埋头钻截骨术。考虑到嵴顶区域的应力分布，埋头钻截骨术与其他方法相比显示出较低的值。
