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Pixel value analysis for detection of simulated early external root resorption.

Marcelo Lupion Poleti¹, Thais Maria Freire Fernandes², Camila Cristina Paiz³

¹Department of Oral Radiology, Faculty of Dentistry, Universidade Norte do Paraná, Londrina, PR, Brazil.

Brazilian Oral Research

|September 18, 2014

Summary

Pixel value analysis using Digora™ and Visualix™ imaging systems was ineffective for detecting external root resorption (ERR). Calcium quantification confirmed ERR, but digital image analysis did not correlate with resorption time.

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Area of Science:

Dentistry
Dental Imaging
Endodontics

Background:

External root resorption (ERR) is a pathological process affecting teeth.
Early detection of ERR is crucial for effective treatment and tooth preservation.
Digital radiography systems offer potential for quantitative analysis in dental diagnostics.

Purpose of the Study:

To evaluate the efficacy of pixel value analysis from Digora™ and Visualix™ digital systems for early external root resorption (ERR) detection.
To correlate digital image pixel values with the severity of induced ERR.
To assess the diagnostic potential of these systems in identifying root structure changes.

Main Methods:

Thirty extracted human lower incisors underwent induced ERR using hydrochloric acid (10, 30, 60 minutes).
Digital radiographs were acquired using Digora™ and Visualix™ systems under standardized parameters.
Calcium concentration was measured using atomic absorption spectrophotometry to confirm ERR, and ImageJ software was used for pixel value analysis.

Main Results:

No statistically significant difference was found between ERR induction time and pixel values for either imaging system.
A strong positive correlation (r = 0.8892; p < 0.001) was observed between ERR induction time and calcium concentration.
Pixel value analysis did not demonstrate efficacy in detecting or quantifying induced external root resorption.

Conclusions:

Pixel value analysis of digital radiographs from Digora™ and Visualix™ systems is not an effective method for the early detection of external root resorption.
The study highlights limitations in using current digital imaging pixel values for quantitative assessment of root resorption.
Further research may be needed to explore advanced image processing techniques for improved ERR detection.