CEREC AC system으로 채득된 디지털 인상의 재현성, 정확성 평가에 관한 연구
Reliability, accuracy of evaluations obtained from CEREC AC system digital impression: an in-vitro study
김재홍, 김기백, 김혜영, 김정애, 김웅철, 김지환,
소속 상세정보
김재홍 ( Kim Jae-Hong ) - 고려대학교 대학원 보건과학과
김기백 ( Kim Ki-Baek ) - 고려대학교 대학원 보건과학과
김혜영 ( Kim Hae-Young ) - 고려대학교 대학원 보건과학과
김정애 ( Kim Jung-Ae ) - 엘리시아 치과의원
김웅철 ( Kim Woong-Chul ) - 고려대학교 대학원 보건과학과
김지환 ( Kim Ji-Hwan ) - 고려대학교 대학원 보건과학과
KMID : 0362120120340020121
Abstract
Purpose: The aim of this study was to determine the reliability and accuracy of measurements in digital models(CEREC AC) compared to stone models.
Methods: A master model(500B-1, Nissin Dental Product, Japan) with the prepared upper full arch tooth was used. Conventional impression and then stone model(n=10) were produced from this master model, and on the other hands, digital impressions were made with the CEREC AC intra-oral scanner(n=10). One examiner measured two times the intercanine, intermolar distance, dental arch length. The stone model were measured using a digital caliper. The t-student test for paired samples and intraclass correlation coefficient(ICC) were used for statistical analysis.
Results: The measurement of two methods showed very good reliability. At the intra-examiner reliability of measurement, ICC at the stone and CEREC AC model were 0.81 and 0.94. The mean difference between measurements made directly on the stone models and those made on the CEREC AC model was 0.20~0.28mm, and was statistically significant(P=0.001).
Conclusion: These in vitro studies show that accuracy of the digital impression is similar to that of the conventional impression. These results will have to be confirmed in further clinical studies.
키워드
accuracy; CEREC AC; digital impression; stone model; reliability
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