Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Comparison of 2-dimensional marginal and internal fitness for the monolithic zirconia prosthesis using intraoral scanner and extraoral scanner: in vitro

Extraoral scanner와 intraoral scanner를 이용하여 제작된 zirconia crown의 2차원 변연 및 내면 적합도 비교: 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)
  • 이태희 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 이하빈 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 김지환 (고려대학교 대학원 보건과학과 치의기공전공)
  • Received : 2019.05.29
  • Accepted : 2019.09.26
  • Published : 2019.09.30
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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

References

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