الفهرس 
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Abstract
The strain induced in implant-supported overdentures reinforced by glass fibers was evaluated using strain gauge analysis.
An acrylic resin model was fabricated from a commercially available acrylic model with a full set of teeth. The final model had no artificial teeth but 4 implants, with an overlying metal framework of four copings joined together by bars.
Three overdentures were constructed. The control overdenture was not reinforced, but was constructed in exactly the same manner as the reinforced overdentures.
The second overdenture was partially reinforced by preimpregnated glass fibers. These were placed in the acrylic resin overlying the copings of the abutments and bars, and extending posteriorly over the crest of the ridge.
The third overdenture was totally reinforced by the same type of preimpregnated glass fibers. The glass fibers were placed throughout the acrylic resin denture base, only 1 mm shorter than the denture borders.
Simulation of the mucosa was performed using light body rubber base.
Four channel strain meter was used to assess and record the microstrains induced while loading is applied.
A loading device was used to produce loading within the physiologic limit of 100 N unilaterally on each overdenture in a vertical direction.
Microstrains were recorded at each site of the strain gauge during loading.
The results showed that; on the loaded area, the partial fiber reinforcement overdenture produced less microstrains than the total fiber reinforcement overdenture. The latter produced microstrains that were almost equal to the control overdenture.