Topological Optimization of a Dental Prosthesis

From many years the dental prosthesis has been studied and used for the replacement of teeth. Many attempts are continuously made in order to reduce the volume of the prosthesis and thus their weight and their cost ensuring high level of stiffness. In this perspective, the goal of this work is to take the advantages of the finite element (FE) method performing a topological optimization of a dental prosthesis, looking for redundant material distribution in order to minimize the compliance. In this work the initial volume of a basic dental prosthesis was designed and divided in a design part, object of optimization, and a non-design part. The loads coming from mastication have been considered after a detailed analysis of literature, using a simplified method. The optimized geometry of the prosthesis obtained, has been subjected to a finite element analysis to study stress, strain and displacement distribution, in order to verify its correct function avoiding pain for the patient. The obtained prosthesis can ensure a volume reduction of 60%, with displacements which do not disturb the patient during normal mastication.

 

The Author

Prof. Massimiliano Avalle
Assegnista di Ricerca
Politecnico di Torino