PSI - Issue 41

Dario Milone et al. / Procedia Structural Integrity 41 (2022) 680–691 Author name / Structural Integrity Procedia 00 (2019) 000–000

685

6

the continuity of the maxillary bone (Figure 4a). The load condition regard the post surface (Figure 4b) and the implant has been test with a compression load of 400 N. In particular, three different cases have been investigated: pure vertical load along Z-axis, 15-degree inclination and 30-degree inclination. The bone-implant contact condition was modelled as a “frictional” contact system, in order to simulate the osseointegration process of the implant, with a friction coefficient of 0.15[24]. Considering that the post is cemented over the implant, the contact between the post and the implant has been set to “bonded”. The same contact condition has been applied to the contact between the cortical bone and the cancellous bone.

(a)

(b)

Figure 4 Boundary conditions implemented to the FE model (a) Fixed support applied to the front and rear side of the bone (b) Load condition applied to post surface

3. Result and discussions The stress distribution around the implant has been evaluated and compared for both materials. The result is the analysis of three-dimensional models that consider the risk factors related to bone quality and inflammation. Finite Element Method (FEM) and Finite Element Analysis (FEA) have been extensively applied to simulate the effects of loading on the implant and surrounding bone. As is well known, a finite element model needs to be calibrated based