Finite element stress analysis in morse cone platform dental implants
DOI:
https://doi.org/10.5335/rfo.v24i3.9595Keywords:
Numerical analysis. Dental implant. Stresses. Displacements.Abstract
Predicting the mechanical behavior of tilted implants is an important factor in the field of dentistry, and the Finite Element Analysis (FEA) is a tool for such purpose. Objective: To analyze the distribution of stresses and displacements in conical Morse cone implants with 3.5 mm of diameter and abutments with 4.8 mm and 3.8 mm of diameter, subjected to compression loads (100 N and 200 N), tilted at 20º and 45º with stainless steel base material and cortical bone, using FEA. Materials and method: Two three-dimensional models of implants and abutments tilted at 20º and 45º were used, and they were subjected to vertical downward
compression loads (Y–axis). Results: Maximum von Mises stresses presented higher values for the 45º inclination and 200 N load. It was also verified that the results for implants subjected to a load of 100 N and implants tilted at 45º presented higher stress values (574.16 MPa) than literature data, with a difference of 8.7%. This was also observed for displacement results, in which implant- abutment assemblies with greater inclination (45º) presented higher values than implant-abutments with smaller inclination (20º). Conclusion:
The FEA showed that higher stress values were obtained when compression loads were applied to greater inclinations. This also occurred for displacement results. The FEA represented a viable alternative in the field of dentistry to predict the mechanical behavior of dental implants.
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