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

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. A prepared metal die and a metal crown were fabricated. The gap between the restoration and abutmen...

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Veröffentlicht in:The journal of advanced prosthodontics Jg. 9; H. 5; S. 358
Hauptverfasser: Mai, Hang-Nga, Lee, Kyeong Eun, Lee, Kyu-Bok, Jeong, Seung-Mi, Lee, Seok-Jae, Lee, Cheong-Hee, An, Seo-Young, Lee, Du-Hyeong
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Korea (South) 01.10.2017
Schlagworte:
Prosthesis adaptation
Silicone replica technique
Verification
Reliability
Computer-aided replica technique
Concordance correlation coefficient analysis
ISSN:2005-7806
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Zusammenfassung: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. 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. 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. The CART is a reliable digital approach for evaluating the fit accuracy of fixed dental prostheses.
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ISSN:2005-7806
DOI:10.4047/jap.2017.9.5.358