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Measurement of endodontic file lengths: a density profile plot analysis
M E Piepenbring1, B J Potter, R N Weller
1Department of Endodontics, School of Dentistry, Medical College of Georgia, Augusta, GA 30912-1244.
Journal of Endodontics
|February 24, 2001
Summary
Density profile plot analysis accurately measured endodontic file lengths on digital images. This method, using digital radiography, showed reliable results within 0.5 mm of known lengths for various file sizes.
Area of Science:
- Endodontics
- Dental Imaging
- Radiology
Background:
- Accurate measurement of endodontic files is crucial for successful root canal therapy.
- Digital imaging offers potential for precise measurements but requires validated analytical methods.
Purpose of the Study:
- To evaluate the accuracy of density profile plot analysis for measuring endodontic file lengths from digital images.
- To compare measurements obtained via density profile plot analysis with known file lengths.
Main Methods:
- Ten single-rooted teeth from cadaver specimens were used.
- Endodontic files (#8, #10, #15, #20 FlexoFiles) were placed to specific working lengths.
- Digital radiographic images were acquired using a GE X-ray unit and Schick CDR #2 sensor.
- An independent investigator measured file lengths using density profile plot analysis.
Main Results:
- Experimental measurements were consistently within 0.5 mm of known file lengths.
- Larger file sizes exhibited less deviation from known lengths (e.g., #20 file: -0.16 mm deviation).
- Statistical analysis (paired t test, ICC, Bradley-Blackwood) confirmed measurement reliability.
Conclusions:
- Density profile plot analysis is a potentially valuable adjunct for determining endodontic file lengths on digital images.
- The method demonstrates good accuracy and reliability, especially for larger file sizes.
- This technique may enhance precision in endodontic treatment planning and execution.