Abstract
In this study, the primary stability of two widely used imported dental implants in the Iranian market, referred to as Implant A and Implant B, was investigated and compared. This comparison was conducted through simulations of each implant insertion process into the bone, followed by pull-out test simulations. Key parameters such as maximum insertion torque, pull-out strength, implant-bone structure stiffness, and the work done by external forces during the insertion process were calculated using finite element methods, for each brand. Both insertion and pull-out operations can cause damage within the bone tissue; therefore, this study considered plastic and damage properties in addition to the elastic properties of the bone tissue. The results showed good agreement with existing experimental results, as well as with finite element studies in the literature. The findings indicated that Implant A exhibited greater primary stability compared to Implant B. Specifically, the insertion torque, stiffness, and holding power for Implant A were calculated to be: 48%, 31%, and 29% higher, respectively, than those of the Implant B. Additionally, the work required for implantation of Implant A is 41% lower than that of Implant B. Furthermore, it can be concluded that a lower amount of insertion energy indicates less damage production in the bone tissue, resulting in greater primary stability of the dental implant in terms of pull-out strength and implant-bone structure stiffness.