الفهرس 
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Abstract
This study was performed to evaluate the effect of
the metal and acetal denture bases around implant
supported removable partial denture using photoelastic
stress analysis method.
The experiment was carried out on mandibular epoxy
class I models with two parallel implants placed at lower
first molar area and two groups were created:
group I: Acetal denture base
group II: Metallic denture base
The stress was measured using photoelastic stress
analysis machine by applying force on the metal plates
which was adjusted on the occlusal surface of the acrylic
record blocks.
Regarding the models from the right and left side,
stress analysis images were recorded for both groups and
for both sides at stresses from 20 to 100 newton, using
photoelastic machine and mean stress values were recorded
for both groups, tabulated and statistically analyzed and the
following result were obtained:-