Which tool is commonly used for measuring and shaping canals during a root canal procedure?

• A. Dental mirror
• B. Endodontic files
• C. Ultrasonic scaler
• D. Dental explorers

Answer: (B)

Endodontic files are essential tools in root canal procedures due to their specific design and function. These files are used to clean and shape the root canals, which is crucial for removing infected tissue and debris while preparing the canal for filling with a sealer or gutta-percha.

The design of endodontic files allows them to navigate the curvature of canals effectively while also enabling the operator to accurately gauge the size and contours of the canal system. They come in various sizes and shapes to match the specific needs of different canals, ensuring thorough cleaning and shaping.

While dental mirrors are useful for visibility in the oral cavity, ultrasonic scalers are primarily used for removing calculus from teeth surfaces, and dental explorers are designed for detecting caries and assessing the health of tooth surfaces, none of these tools have the capability or purpose of measuring and shaping root canals as endodontic files do.