الفهرس 
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Abstract
Summary
This study was conducted to evaluate the adaptation of removable partial denture constructed by CAD\CAM and conventional techniques.
Educational maxillary stone model Kennedy Class-III modification.1 class was used for this study. Rest seat preparation were done in near zone of the edentulous area, after beading was done duplication was done to produce silicon index. Silicon index was used to produce four identical stone models which divided into two groups .group A where the wax pattern milled and group B where the wax pattern done by conventional technique.
Scanning of the refractory cast was done by 3Shape desktop scanner. Digital surveyor able to Surveying and cast modification was done by 3Shape software. The design of removable partial denture framework was done by 3Shape software. The finalized design, it saved as STL file.
In the first group, the STL file was used to mill the design in the form of castable machinable wax, which sprued and flasked by conventional lost wax technique .In the second group, the wax pattern was applied manually. Then sprued and flasked by conventional lost wax technique.
After finishing and polishing of all frameworks, they returned to the refractory cast, scanning of the finalized frameworks done by 3Shappe scanner, the data of scanned frameworks were saved as STL file.
Adaptation of removable partial denture was evaluated through surface matching software .Superimposition between the initial STL file of the design with the final STL file of the scanned framework was done.
Adaptation was measured at predetermined notches made on the denture base and major connector for standardization.
Surface matching software evaluated the adaptation (gap)
At three axes X, Y AND Z.
The results obtained from this study revealed higher adaptation in the milled group than the pressed one; however the difference was statistically insignificant.