ABSTRACT
The use of osseointegrated implants in severely atrophied maxilla has important limitations. Two different titanium hybrid-plates are evaluated with finite elements as another viable alternative for atrophic maxilla rehabilitation. The three-dimensional model analyzed is based on a real clinical case. An axial force of 100 N was applied in each plate. The model was subjected to a rigid fixation restriction in the upper and lateral maxilla to prevent displacement in the x, y and z axes. A non-penetration condition between plates and maxilla was added to prevent interferences during the execution process. Von Mises stresses on plates and principal stress on maxilla were obtained with a maximum value of 180 MPa in plates and 80 MPa in maxilla. According to these results, it is possible to conclude that this technique can be considered a viable alternative for atrophic maxilla rehabilitation although it is necessary more studies to corroborate the clinical results.
