الفهرس 
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Abstract
This simulation study was conducted to evaluate the effect of implants on stress distribution in Kennedy (Class I) with anterior modification restored with anterior splint bar attachment. It was evaluated using strain gauge analaysis.
Two identical acrylic mandibular models with the canines, first and second premolars as abutment teeth were used for this study.
These models replicate the anatomic features of the teeth and their investing structures.
The abutments were reduced to 5-6mm in height to provide sufficient tooth reduction.
Two implants four mm in diameter and ten mm in length were placed in the second molar area in one model then two standard abutments were screwed to their corresponding implants and prepared to attain a dome shaped abutment of 3-4 mm approximately in height.
Two mandibular overdentures were constructed retained anteriorly by splint bar and one of them supported posteriorly by two implants.
Four channel strain meter was used to asses and record the strains induced mesial to the canine, distal to the second premolar, 7mm and 15mm distal to the second premolar.
A loading device was used to produce a standardized static load within the physiologic limits of 80 N on the first molar area unilaterally and bilaterally.
Microstrains were recorded at each site of the strain gauge during unilateral and bilateral loading with enough time between each load to permit complete rebound of the resilient structures.
Based on the data obtained from this experimental invitro study, it can be concluded that:
• Using of posterior implant decreases the stresses induced around the abutment teeth and on the ridge leading to favorable stress distribution
• Unilateral loading was more traumatic to the abutments compared to bilateral loading as bilateral loading provides wide distribution of stresses.