It is important to hold all conditions constant, while varying only
one characteristic of the structure at a time. This was done for
two characteristics of the dental ridge, the pore size and the shell thickness.
The pore sizes varied from 0.75mm x 0.75mm to 1.0mm x 1.0mm. Based on the
FEA data results, it was found that the larger pore size created mores
stress on the structure and smaller pore size reduced the amount of stress
imposed on the structure. Appendix B shows the difference in color
gradient of the amount of stress imposed on the dental ridge. Notice
that the shell thickness is held constant at 1.0mm and the pore size is
varied.
Appendix B shows that the maximum principal stress imposed on the ridge with smaller pore sizes is 2.1764E+2mm-N-s and the maximum principal stress imposed on the ridge with the larger pore sizes is 4.3456E+1mm-N-s.
The shell thickness varied from 0.2mm to 1.0mm. Based on the FEA data results, it was found that the thinner shell thickness created mores stress on the structure and larger shell thickness reduced the amount of stress imposed on the structure. Appendix A shows the difference in color gradient of the amount of stress imposed on the dental ridge. Notice that the pore size is held constant at 0.75mm and the shell thickness is varied.
As shown in Appendix A, the maximum principal stress imposed on the
dental ridge with a smaller shell thickness is 1.9966E+2mm-N-s and the
maximum principal stress imposed on the dental ridge with the larger shell
thickness is 2.1764E+2mm-N-s.