Assessment of external root resorption using digital subtraction radiography

Area of Science:

• Dentistry
• Radiology
• Medical Imaging

Background:

• External root resorption is a pathological process affecting teeth.
• Accurate detection and quantification of root resorption are crucial for diagnosis and treatment planning.
• Conventional radiography has limitations in visualizing subtle root defects.

Purpose of the Study:

• To evaluate the diagnostic performance of digital subtraction radiography (DSR) for detecting experimental external root resorptive defects.
• To assess the capability of DSR in quantifying the severity of these defects.

Main Methods:

• Experimental external root resorptive defects were created in teeth within a dry human skull.
• Serial radiographs were acquired using a long source-to-object X-ray technique and E-speed film.
• Digital subtraction radiography and conventional radiography were compared using Receiver Operating Characteristic (ROC) analysis.
• Quantitative analysis involved sequential demineralization and calcium analysis, followed by 3D histogram quantification of subtracted images.

Main Results:

• Digital subtraction radiography demonstrated significantly superior performance in detecting experimental external root resorption compared to conventional radiography.
• The study confirmed the potential of DSR for quantifying the extent of root resorptive defects.

Conclusions:

• Digital subtraction radiography is a highly effective tool for the detection of external root resorption.
• DSR offers a reliable method for quantifying the severity of external root resorptive defects, aiding in clinical assessment.