For endodontic evaluation, which imaging modality provides the most accurate assessment of canal morphology?

For endodontic evaluation, which imaging modality provides the most accurate assessment of canal morphology?

• A. Panoramic radiography.
• B. Periapical radiographs.
• C. Cone-beam computed tomography (CBCT).
• D. MRI.

Answer: (C)

Three-dimensional visualization of the root canal system is necessary to truly understand canal morphology. Cone-beam computed tomography provides volumetric imaging with isotropic voxels, allowing you to view the tooth in axial, coronal, and sagittal planes. This makes it possible to identify hidden or accessory canals, complex curvatures, isthmuses, and calcifications that are often obscured or misrepresented on two-dimensional images. In contrast, panoramic and periapical radiographs flatten anatomy and can distort or superimpose structures, so subtle features of the canal system may be missed. MRI, while excellent for soft tissues, lacks the high-resolution detail for small hard-tissue dental structures and is not routinely used in endodontics. Therefore, CBCT offers the most accurate assessment of canal morphology.

Three-dimensional visualization of the root canal system is necessary to truly understand canal morphology. Cone-beam computed tomography provides volumetric imaging with isotropic voxels, allowing you to view the tooth in axial, coronal, and sagittal planes. This makes it possible to identify hidden or accessory canals, complex curvatures, isthmuses, and calcifications that are often obscured or misrepresented on two-dimensional images. In contrast, panoramic and periapical radiographs flatten anatomy and can distort or superimpose structures, so subtle features of the canal system may be missed. MRI, while excellent for soft tissues, lacks the high-resolution detail for small hard-tissue dental structures and is not routinely used in endodontics. Therefore, CBCT offers the most accurate assessment of canal morphology.