الفهرس 
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Abstract
This study aimed to compare difference in stress induced around implant supported maxillary and mandibular cantilevered overdenture.
An acrylic maxillary and mandibular cast models were fabricated through an impression of educational stone casts. Then complete maxillary and mandibular dentures were constructed over the acrylic casts.
Five single piece implants with straight abutments were inserted at the midline, canine and second premolar areas through the use of a dental surveyor. The wax pattern of bar was placed at its position and wax coping was done then Spruing, investment and casting was done. Then finishing of the casted bar was performed. Fabrication of mucosal stimulated layer was done and the bar was placed in position followed by denture placement, then application of ten strain gauges in each cast and load was applied. Then the data was collected, tabulated and statistically analyzed.
This study results showed that in maxillary cast there was a significant difference between canine and premolar implants regarding the total stresses detected around the implants, where the premolar implants showed higher stresses than the canine implants with level of significance of 0.0001.
While in the mandible the results showed that the premolar implants showed higher stresses than the canine implants with level of significance of 0.0001 and this could be related to the pivoting action also.
The study also showed that the distal surface of the maxillary premolar implants showed higher stresses than the distal surface of the maxillary canine implants with level of significance of 0.0001.
The same finding was found in the mandibular cast with a level of significance of 0.0001 between the distal surface of the premolar implants and the distal surface of the canine implants.
The results of this study also showed that there was insignificant difference between total stresses induced around the maxillary and mandibular median implants as p-value was 0.782.
The results of the study also showed that the stresses induced around maxillary canine and premolar implants were higher than the mandibular one, and the results were statistically significant as p-value was 0.0001.