Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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A study on Common Errors in Digital Impressions: (An Example of CEREC$^{(R)}$ AC)

디지털 인상 채득 시 흔히 발생하는 오류에 관한 연구 - CEREC$^{(R)}$ AC의 사례 중심으로 -

  • Kim, Jae-Hong (Department of Health Science Specialized in Dental Lab. Science & Engineering, Graduate School, Korea University) ;
  • Kim, Ji-Hwan (Department of Health Science Specialized in Dental Lab. Science & Engineering, Graduate School, Korea University) ;
  • Kim, Hae-Young (Department of Health Science Specialized in Dental Lab. Science & Engineering, Graduate School, Korea University)
  • 김재홍 (고려대학교 대학원 보건과학과 치의기공) ;
  • 김지환 (고려대학교 대학원 보건과학과 치의기공) ;
  • 김혜영 (고려대학교 대학원 보건과학과 치의기공)
  • Received : 2011.07.27
  • Accepted : 2011.09.20
  • Published : 2011.09.30
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Abstract

Purpose: The purpose of the study was a quantitative evaluation of common errors in digital impression procedure using CEREC$^{(R)}$ AC system. Methods: Two-hundreds digital impression data comprising 174 inlays, 26 onlays by CEREC$^{(R)}$ AC in-office CAD/CAM system were obtained from a dental clinic. One evaluator assessed errors of the digital impression data and divided into five categories of errors: inappropriate scanner positioning (ISP), improper handling with a scanner (IHS), irregular powder arrangement (IPA), improper cavity preparation (ICP), and insufficient scanned data (ISD). Results: The most common errors were IPA(21%), and ISP and ISD were followed by 17% respectively. IHS was found in 14.5% of all digital impression data. ICP comprising only 6.5% was the rarest. Conclusion: Most errors were due to inaccurate manipulation with an intraoral scanner or improper cavity preparation for scanning. A deliberate manipulation to prevent common errors mentioned may deliver an optimal result in the digital impression procedure.

Keywords

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