Numerical Study on the Teeth Installation Parameters: Shift and Tilt Angle Effects

The chapter is dedicated to the study on the teeth installation parameters on the stress state of the prosthesis under typical chewing loads. The two main parameters are investigated: the role of the dentition installation line and the role of tilt angle of teeth blocks. The simple 3D models were developed and used for these calculations. The physically based boundary conditions are introduced. The results of the calculation show a higher sensitivity of the lower prosthesis basis to vary the parameters compared to the upper prosthesis basis. It is shown that external shift of teeth installation line leads to higher stress intensity compared to oral one. The tilt angle effect results in slightly lower stress intensity compared to the shift effect. The oral tilt angle effect leads to higher stress intensity compared to the external tilt angles.