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Effect of ambient light and bit depth of digital radiograph on observer performance in determination of endodontic file positioning

Cited 19 time in Web of Science Cited 22 time in Scopus
Authors
Heo, Min-Suk; Han, Dong-Hun; An, Byung-Mo; Huh, Kyung-Hoe; Yi, Won-Jin; Lee, Sam-Sun; Choi, Soon-Chul
Issue Date
2008-02
Publisher
Mosby
Citation
Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008;105:239-44
Abstract
Objectives
To examine the effects of the luminance and bit depth of digital image on observer performance for determination of endodontic file positioning.

Study design
Using extracted premolar teeth, no. 08 K-file was placed into the canal and positioned so that the tip was either flush or 1 mm short of the radiologic root apex. The samples were imaged with both conventional and digital radiographs at 8 and 12 bits. Eleven observers read the images under dark and bright condition, and receiver operating characteristics analysis was performed. Additionally, the interpreting time was measured.

Results
The 12-bit images showed similar observer performance compared with conventional images, and better than the 8-bit images. The interpretation time for bright condition and 8-bit images was longer than for dark condition and 12-bit images.

Conclusion
Twelve-bit digital images were preferred to 8-bit for accurate determination of endodontic file position.
ISSN
1079-2104
Language
English
URI
http://hdl.handle.net/10371/62163
DOI
https://doi.org/10.1016/j.tripleo.2007.02.002
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Appears in Collections:
College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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