In dental radiology, CBCT is particularly useful for TMJ assessment for what?

• A. Soft tissue disc visualization
• B. Measure salivary flow
• C. Detect muscular activity
• D. Detailed evaluation of bony morphology and joint spaces

Answer: (D)

CBCT shines in imaging the bony structures of the TMJ with high-resolution 3D detail, allowing precise evaluation of condylar morphology and the bones of the temporal bone. This makes it ideal for assessing the shape and surface of the condyle, any erosions, flattening, osteophytes, and the overall angular relationships, as well as the anatomy of the fossa and articular eminence. It also enables accurate measurement of the joint spaces (anterior, superior, and posterior) in multiple planes to determine how well the condyle sits within the socket and to detect degenerative or inflammatory changes. Soft tissue structures like the articular disc aren’t well visualized with CBCT, so MRI is preferred when disc position or soft tissue pathology is a concern. Measuring salivary flow or detecting muscular activity isn’t within CBCT’s capabilities, so those aren’t the focus of this modality.