ABSTRACT
In this study two different surgical techniques for insertion of dental implants were analysed and compared: (1) 4-On-Pillars, a new surgical approach for the insertion of implants in atrophic maxilla; and (2) All-On-4, a well-known technique for the same purpose previously referred. The 2D models were discretised with an element mesh. In order to simulate the surrounding structures, natural and essential boundary conditions were applied to the model. These models were numerically analysed using the Finite Element Method (FEM). The results show different stress distributions between the two techniques studied, being possible to conclude that in the All-On-4 model the distribution was more homogeneous, unlike the 4-On-Pillars model, in which stress distribution was more concentrated.
