REINFORCEMENT OF POLYMETHYLMETHACRYLATE (PMMA) RESIN WITH PERFORATED METAL PLATES
It implies that there may be a most appropriate
design of perforated metal for strengthening
denture base resins.
When filler particles or fibers are used as
strengthener, the rule of mixtures, which is a
weighted mean used to predict various properties
of a composite material, can be used to estimate
the strength and stiffness of the test specimens
used in the study.
However, depending on the design, such as the
size, pattern and distribution of the perforation,
thickness of the metal grid and the direction
of force applied, the effective strength and the
stiffness of the metal grid vary.
Finding such metal grid experimentally may not
be the most efficient approach. A finite element
analysis with a well-defined model, can be used
to demonstrate stress distribution within a metal
grid reinforced denture base. The model can be
modified to reflect the change in design and the
site or direction of loading. The design the most
favorable stress distribution can then be sel X