How can you determine if a patient is well anesthetized before performing endodontic therapy?

The cold test is the most reliable way to confirm anesthesia before endodontic therapy. Applying a cold stimulus (e.g., Endo-Ice) to the tooth helps verify the absence of sensitivity, ensuring the pulp is anesthetized. Electric pulp test indicates pulp vitality but is not used to confirm anesthesia. Percussion test assesses periapical inflammation but does not confirm anesthesia. Radiographic examination is diagnostic but does not assess anesthesia.