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Updated: Aug 4, 2026
06:51
Measuring the Complete-arch Distortion of an Optical Dental Impression
Published on: May 30, 2019
Contrast perception in digitized panoramic radiographs compared with their film-based origin
Ralf Kurt Willy Schulze1, Stephan Tobias Roman Rosing, Bernd D'Hoedt
1Department of Oral Surgery, Dental School, Johannes Gutenberg-University, Mainz, Germany. rschulze@mail.uni-mainz.de
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
|September 27, 2002
Summary
Digital panoramic radiographs showed slightly lower sensitivity than film-based ones, especially in dense areas. However, the overall difference in visual image quality was minimal for both methods.
Area of Science:
- Dental Radiology
- Diagnostic Imaging
Background:
- Panoramic radiography is a common dental imaging technique.
- Assessing image quality is crucial for accurate diagnosis.
Purpose of the Study:
- To compare the visual image quality of film-based and digitized panoramic radiographs.
- Evaluate the perception of details in different image types.
Main Methods:
- An aluminum test wedge with holes was used for imaging.
- Film radiographs were digitized using a charge-coupled device scanner.
- Observers rated spot perception on both film and digital images.
Main Results:
- Film-based images demonstrated significantly higher sensitivity (0.26) compared to digitized images (0.20).
- Specificity was comparable between film (0.93) and digitized (0.92) images.
- Digitized images showed reduced performance in high-density regions.
Conclusions:
- Film-based panoramic radiographs offer superior sensitivity for detail perception.
- The absolute difference in sensitivity is small, suggesting comparable clinical utility.
- Digital panoramic radiography maintains high specificity.
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