Numerically and theoretically studying of the upper composite complete prosthetic denture

الملخص EN

The current study focused on the manufacturing and development properties of upper prosthesis complete denture from composite materials with the basis cold cured resin of poly methyl methacrylate as new fluid resin and reinforced materials by two different types of particles (nano-hydroxyapatite (nHA), micro zirconia (ZrO2)), that added with different volume fractions of (1%, 2% and 3%), and the different types of woven fibers (Glass fiber, Kevlar fiber), it were added with a fixed volume fraction of (5%) to PMMA composites.

Specimens’ consist of a six groups where prepared by using (Hand Lay-Up) method from the composites materials and hybrid laminated composites materials.

This research includes theoretical and numerical studies by using finite element method to confirming the experimental results of the effect of selected volume fractions of these particles and fibers on the (total deformation distribution, equivalent elastic strain and equivalent Von Mises stress) of the composite prosthetic dentures.

The theoretical part included calculations the values of theoretical safety factor and Poisson's ratio.

While the numerical part based on finite element method (F.E.M), which was performed by using program (ANSYS-15) to analyze the prepared of denture composite materials and evaluate its characteristics which represent total deformation distribution, equivalent stress and equivalent elastic strain.

This was performed by obtaining twenty one models for the PMMA composite dental prostheses which were treated as three dimension structure.

The numerical results of the F.E.A showed coincided with some of the experimental results.