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http://dx.doi.org/10.14347/kadt.2019.41.3.187

Comparison of 2-dimensional marginal and internal fitness for the monolithic zirconia prosthesis using intraoral scanner and extraoral scanner: in vitro  

Lee, Tae-Hee (Department of Dental Laboratory science & Engineering, College of Health science, Korea University)
Lee, Ha-Bin (Department of Dental Laboratory science & Engineering, College of Health science, Korea University)
Kim, Ji-hwan (Department of Dental Laboratory science & Engineering, College of Health science, Korea University)
Publication Information
Journal of Technologic Dentistry / v.41, no.3, 2019 , pp. 187-193 More about this Journal
Abstract
Purpose: The purpose of this study was to compare two-dimensional fitness of the monolithic zirconia prosthesis by using different type of scanner. Methods: No. 26 abutment tooth of FDI system was selected for the study. Using the extraoral scanner and intraoral scanner, the abutment tooth was scanned 10 times and the scanned files were saved as STL files. CAD/CAM system was used to produce the monolithic zirconia prosthesis. marginal and internal gap of the monolithic zirconia prosthesis were measured by digital microscope(x160) and applied silicone replica technique was applied. t-test, a statistical software, was used to perform data analysis. Results: Marginal gap $mean{\pm}SD$ of the monolithic zirconia prosthesis was $33{\pm}7.5{\mu}m$ with extra oral scanner and $34.7{\pm}11.1{\mu}m$ with intraoral scanner. axial gap mean was $40.5{\pm}3.5{\mu}m$ with extra oral scanner and $44.6{\pm}11.6{\mu}m$ with intraoral scanner. occlusal gap mean was $110.1{\pm}25.4{\mu}m$ with extra oral scanner and $64{\pm}9.7{\mu}m$ with intraoral scanner. Conclusion: In this study, fabricating zirconia prosthesis with different type of scanner was clinically applicable.
Keywords
Intraoral scanner; Extraoral scanner; Marginal fit; Internal fit;
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