For diagnosing temporomandibular joint disorders, which radiographic view is typically obtained first?

• A. Panoramic radiograph
• B. Cephalometric radiograph
• C. Occlusal radiograph
• D. Lateral skull radiograph

Answer: (A)

When screening for temporomandibular joint disorders, you want a view that gives a broad, bilateral look at the joints and surrounding structures. The panoramic radiograph does exactly that: it captures both condyles in a single image, along with the mandible and related anatomy, allowing quick screening for gross bony changes such as flattening, erosion, osteophytes, or asymmetry. It’s convenient, widely available, and involves relatively low radiation, making it a sensible first imaging step.

Other views don’t provide the same comprehensive joint view. A lateral skull (cephalometric) radiograph focuses on craniofacial skeletal relationships rather than detailed TMJ morphology. Occlusal radiographs are more limited in scope and mainly help with local issues or occlusal surfaces rather than a bilateral joint assessment. A cephalometric or lateral skull view also doesn’t visualize the joint surfaces and contours as effectively as a panoramic image. If deeper investigation is needed after the panoramic, MRI can assess soft tissues like the articular disc, and CBCT/CT can offer detailed bony anatomy.