We studied the biomechanical behavior of different types of crowns by finite element analysis, using Cosmos DesignStar, and considering the different peripheral preparations. The forces were considered to act at the cingulum and incisal edge level. We determined the force values at which the fractures of marginal edges will be recorded due to the compression and, first of all, tension.
The best resistance was recorded for chamfer preparation, then for shoulder, chisel and end-knife. The differences between the force values are significant.
- BIOMECHANICAL BEHAVIOR
- CERAMIC CROWNS