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IN VITRO ANALYSIS OF THE MARJINAL AND INTERNAL FIT OF SINGLE AND MULTI- UNIT METAL FRAMEWORKS BY USING SOFT METALS AND CONVENTIONAL METHOD

Computer aided design and computer aided manufacture (CAD/CAM) techniques have been using for producing ceramic restorations since 1980. At the same time, this procedure avoid the problems of plaster cast because of air bubbles and deformation of the impression material (contraction and expansion) which affect the adaptation of the prosthesis. Consideration of mariginal and inner adaptation is an important measurement for the prosthesis’ adaptation. Substructers are responsible for the success of mariginal and inner adaptation in fixed dental prosthesis. The purpose of this study is comparing conventionally designed metal substructers’ and computer aided design and computer aided manufacterly (CAD/CAM) designed soft metal substructers’ mariginal and inner adaptation and comparing the change in mariginal and inner adaptation with the change in number of metal substructer unit. According to the results obtained from our research, as the number of members increases, changes occur in marginal and internal fit. As the number of members increases, the fit of restorations decreases. According to the results obtained in our study, all compared metal production techniques have clinically acceptable values regardless of the number of restoration members.

Ferruh Semir Smail
Bahcesehir University
Turkey

Mehmet Muzaffer Ates
Istanbul Medipol University
Turkey

 


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