Purpose: The purpose of the study was a quantitative evaluation of common errors in digital impression procedure using CEREC AC system. Methods: Two-hundreds digital impression data comprising 174 inlays, 26 onlays by CEREC 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.
목차
[Abstract] Ⅰ. 서론 Ⅱ. 연구 방법 1. 연구 대상 2. 연구 방법 3. 분석 방법 Ⅲ. 결과 1. 보철물의 위치에 따른 디지털 인상의 오류의 원인 분석 2. 보철물의 종류에 따른 디지털 인상의 오류의 원인 분석 Ⅳ. 고찰 Ⅴ. 결론 참고문헌