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Interrater and intrarater reliability of FDI criteria applied to photographs of posterior tooth-colored restorations

Authors
 Dohyun Kim  ;  So-Yeon Ahn  ;  Junyoung Kim  ;  Sung-Ho Park 
Citation
 Journal of Prosthetic Dentistry, Vol.118(1) : 18-25.e4, 2017 
Journal Title
 Journal of Prosthetic Dentistry 
ISSN
 0022-3913 
Issue Date
2017
MeSH
Dental Restoration, Permanent* ; Esthetics, Dental* ; Humans ; Observer Variation ; Photography/methods* ; Photography/statistics & numerical data ; Reproducibility of Results ; Republic of Korea ; Research Design ; Tooth Discoloration/diagnostic imaging*
Abstract
STATEMENT OF PROBLEM: Since 2007, the FDI World Dental Federation (FDI) criteria have been used for the clinical evaluation of dental restorations. However, the reliability of the FDI criteria has not been sufficiently addressed. PURPOSE: The purpose of this study was to assess and compare the interrater and intrarater reliability of the FDI criteria by evaluating posterior tooth-colored restorations photographically. MATERIAL AND METHODS: A total of 160 clinical photographs of posterior tooth-colored restorations were evaluated independently by 5 raters with 9 of the FDI criteria suitable for photographic evaluation. The raters recorded the score of each restoration by using 5 grades, and the score was dichotomized into the clinical evaluation scores. After 1 month, 2 of the raters reevaluated the same set of 160 photographs in random order. To estimate the interrater reliability among the 5 raters, the proportion of agreement was calculated, and the Fleiss multirater kappa statistic was used. For the intrarater reliability, the proportion of agreement was calculated, and the Cohen standard kappa statistic was used for each of the 2 raters. RESULTS: The interrater proportion of agreement was 0.41 to 0.57, and the kappa value was 0.09 to 0.39. Overall, the intrarater reliability was higher than the interrater reliability, and rater 1 demonstrated higher intrarater reliability than rater 2. The proportion of agreement and kappa values increased when the 5 scores were dichotomized. The reliability was relatively lower for the esthetic properties compared with the functional or biological properties. CONCLUSIONS: Within the limitations of this study, the FDI criteria presented slight to fair interrater reliability and fair to excellent intrarater reliability in the photographic evaluation of posterior tooth-colored restorations. The reliability was improved by simplifying the evaluation scores.
Full Text
https://www.sciencedirect.com/science/article/pii/S0022391316305248
DOI
10.1016/j.prosdent.2016.10.004
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Dohyun(김도현) ORCID logo https://orcid.org/0000-0002-0772-6985
Park, Sung Ho(박성호) ORCID logo https://orcid.org/0000-0003-2171-235X
Ahn, So Yeon(안소연)
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/160330
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