Share Page:

Volume 17 , Issue 5
September/October 2004

Pages 581-584

Accuracy and Precision of a System for Assessing Severity of Tooth Wear

Tadasu Haketa, DDS, PhD/Kazuyoshi Baba, DDS, PhD/Satoshi Akishige, DDS, PhD/Kenji Fueki, DDS, PhD/ Koji Kino, DDS, PhD/Takashi Ohyama, DDS, PhD

PMID: 15543915

Purpose: The purpose of this study was to introduce a computer-assisted quantitative tooth wear–analyzing system and test its accuracy and precision. Materials and Methods: An image of a horizontally projected dental arch was captured, and the facet area of each tooth was calculated using a digital image analyzer. For normalization, the facet area of the individual tooth was divided by the total area of the corresponding tooth; this result was the tooth wear score. The accuracy and precision of this method were determined through the intraclass correlation coefficient using 10 dental casts. Tooth wear on the dental casts of 50 subjects was actually measured. Results: The accuracy of the tooth wear score determined by a newly trained examiner was greater than 0.85 of the intraclass correlation coefficient; this was tested against the score determined by consensus of three experienced examiners. The reproducibility within a 1-week interval was also greater than 0.85. With regard to the tooth wear score from 50 sets of dental casts, the distribution of tooth wear was generally consistent with data reported in the literature. Conclusion: The results suggest that the newly trained examiner can exhibit adequate accuracy and precision after appropriate training in identifying tooth wear facets. Recorded data from 50 subjects added face validity to this new system.

Full Text PDF File | Order Article


Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.


© 2017 Quintessence Publishing Co, Inc

IJP Home
Current Issue
Ahead of Print
Author Guidelines
Accepted Manuscripts
Submission Form
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us