What radiographic finding indicates a well-obturated canal?

What radiographic finding indicates a well-obturated canal?

• A. The canal is filled to the apex with uniform density and no voids
• B. The canal is partially filled
• C. The filling extends beyond the apex
• D. There is a radiolucent gap along the canal

Answer: (A)

A well-obturated canal on a radiograph should look like a uniform, dense filling that extends to the working length up to the apex, with no voids. This shows the canal has been sealed along its entire length, which is essential to prevent microleakage and reinfection. Voids disrupt the seal and create spaces where bacteria can persist, undermining treatment success. If the fill goes beyond the apex, it can irritate periapical tissues and interfere with healing. A radiolucent gap along the canal indicates an incomplete or poorly adapted fill, compromising obturation. So the ideal finding is a solid, continuous fill to the apex with uniform density and no radiographic voids.

A well-obturated canal on a radiograph should look like a uniform, dense filling that extends to the working length up to the apex, with no voids. This shows the canal has been sealed along its entire length, which is essential to prevent microleakage and reinfection. Voids disrupt the seal and create spaces where bacteria can persist, undermining treatment success. If the fill goes beyond the apex, it can irritate periapical tissues and interfere with healing. A radiolucent gap along the canal indicates an incomplete or poorly adapted fill, compromising obturation. So the ideal finding is a solid, continuous fill to the apex with uniform density and no radiographic voids.