Radiographic interpretation of endodontic file length

Area of Science:

• Dentistry
• Radiology
• Endodontics

Background:

• Accurate root canal length determination is crucial for successful endodontic treatment.
• Radiographs are commonly used to assess file placement during endodontic procedures.

Purpose of the Study:

• To evaluate the accuracy of dental examiners in determining root canal file length adjustments using only radiographs.
• To assess the precision of visual estimation of file length without measurement tools.

Main Methods:

• Nine dental examiners assessed radiographs of root canals with endodontic files (sizes 10 and 15) placed in extracted teeth.
• Examiners estimated necessary file length adjustments without using measuring devices.
• Agreement levels were analyzed for adjustments up to 0.5 mm, 0.5-1.0 mm, and greater than 1.0 mm.

Main Results:

• Examiners achieved 67.91% agreement for file length adjustments up to 0.5 mm.
• Agreement decreased significantly for larger adjustments: 17.76% for 0.5-1.0 mm and 14.33% for >1.0 mm.
• Visual estimation of file length from radiographs alone shows limited accuracy, especially for larger discrepancies.

Conclusions:

• Determining precise endodontic file length solely from radiographs without measurement aids is challenging.
• Clinicians may require adjunctive methods or enhanced training for accurate file length assessment.
• The study highlights potential inaccuracies in radiographic interpretation for file length adjustments in endodontics.