Bevilacqua Marco, Tealdo Tiziano, Pera Francesco, Menini Maria, Mossolov Alexei, Drago Carl, Pera Paolo
Department of Prosthetic Dentistry, University of Genoa, Genova, Italy.
Int J Prosthodont. 2008 Nov-Dec;21(6):539-42.
Many clinical studies have reported high survival rates for tilted implants. However, tilted implants transmit increased stress to bone when compared to vertically placed implants. Theoretical (computer-based), laboratory, and clinical studies are warranted to effectively address this issue. In this study, a 3-dimensional finite element analysis was performed to analyze the stress values surrounding tilted versus vertical implants. The results revealed laboratory and biomechanical evidence that distal tilting of implants, splinted in full fixed prostheses without cantilevers, reduced the amount of stress generated around the peri-implant bone when compared to the levels of stress seen in peri-implant bone with vertical implants and cantilevered segments in similar full fixed prostheses.
许多临床研究报告了倾斜种植体的高生存率。然而，与垂直植入的种植体相比，倾斜种植体向骨组织传递的应力增加。有必要进行理论（基于计算机的）、实验室和临床研究来有效解决这一问题。在本研究中，进行了三维有限元分析，以分析倾斜种植体与垂直种植体周围的应力值。结果显示了实验室和生物力学证据，即与类似全固定修复体中垂直种植体和悬臂段周围种植体周围骨组织所观察到的应力水平相比，在无悬臂的全固定修复体中进行夹板固定时，种植体的远中倾斜减少了种植体周围骨组织产生的应力量。
