ANALYSIS OF DIGITAL IMAGES CAPTURED BY INTRA AND EXTRAORAL SCANNERS IN PROSTHODONTICS

Different techniques have been proposed to diminish the error that evolves the conventional dental impression techniques. Along with the evolution of technology a great amount of different extra and intraoral scanning systems have been created. The main target of this investigation was to compare the accuracy of two dental scanning systems, using an industrial scanner as reference. A modified model was built and scanned by an industrial scanner, followed by an intraoral scanner and an extraoral scanner. The image accuracy was analyzed through the comparison of the meshes obtained by the three scanners. The three-dimensional comparison between the images captured by the industrial scanner and the intraoral scanner reveled positive and negative deviations. Although intraoral digital impressions have given proof of precision and reliability in scanning a small number of preparations, they cannot be considered reliable when scanning a full-arch.

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