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http://dx.doi.org/10.4047/jap.2017.9.5.358

Verification of a computer-aided replica technique for evaluating prosthesis adaptation using statistical agreement analysis  

Mai, Hang-Nga (Department of Prosthodontics, School of Dentistry, Kyungpook National University, Department of Prosthodontics, National Hospital of Odonto-Stomatology)
Lee, Kyeong Eun (Department of Statistics, Kyungpook National University)
Lee, Kyu-Bok (Department of Prosthodontics, School of Dentistry, A3DI, Kyungpook National University)
Jeong, Seung-Mi (Department of Dentistry, Yonsei University Wonju College of Medicine)
Lee, Seok-Jae (Department of Production Engineering, School of Mechanical Engineering, Kyungpook National University)
Lee, Cheong-Hee (Department of Prosthodontics, School of Dentistry, Kyungpook National University)
An, Seo-Young (Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyungpook National University)
Lee, Du-Hyeong (Department of Prosthodontics, School of Dentistry, Kyungpook National University)
Publication Information
The Journal of Advanced Prosthodontics / v.9, no.5, 2017 , pp. 358-363 More about this Journal
Abstract
PURPOSE. The purpose of this study was to evaluate the reliability of computer-aided replica technique (CART) by calculating its agreement with the replica technique (RT), using statistical agreement analysis. MATERIALS AND METHODS. A prepared metal die and a metal crown were fabricated. The gap between the restoration and abutment was replicated using silicone indicator paste (n = 25). Gap measurements differed in the control (RT) and experimental (CART) groups. In the RT group, the silicone replica was manually sectioned, and the marginal and occlusal gaps were measured using a microscope. In the CART group, the gap was digitized using optical scanning and image superimposition, and the gaps were measured using a software program. The agreement between the measurement techniques was evaluated by using the 95% Bland-Altman limits of agreement and concordance correlation coefficients (CCC). The least acceptable CCC was 0.90. RESULTS. The RT and CART groups showed linear association, with a strong positive correlation in gap measurements, but without significant differences. The 95% limits of agreement between the paired gap measurements were 3.84% and 7.08% of the mean. The lower 95% confidence limits of CCC were 0.9676 and 0.9188 for the marginal and occlusal gap measurements, respectively, and the values were greater than the allowed limit. CONCLUSION. The CART is a reliable digital approach for evaluating the fit accuracy of fixed dental prostheses.
Keywords
Computer-aided replica technique; Concordance correlation coefficient analysis; Prosthesis adaptation; Reliability; Verification; Silicone replica technique;
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Times Cited By KSCI : 5  (Citation Analysis)
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