A CT scan of the mandible is a specialized computed tomography imaging test that produces detailed cross-sectional images of the lower jawbone. It helps evaluate fractures, infections, tumors, dental and TMJ problems, bone abnormalities, and planning for surgery or implants. The scan is quick, noninvasive, and provides higher bone detail than plain X-rays, sometimes using contrast for soft-tissue assessment.

A CT scan of the mandible typically requires about 5–15 minutes for the actual image acquisition. Including arrival, registration, positioning and technician prep, the full appointment usually lasts 15–30 minutes. If intravenous contrast is needed, allow extra time for injection and brief observation, extending the visit to roughly 30–60 minutes. Timing can vary by clinic and case complexity.

A CT scan can detect a jaw infection, showing bone changes (osteomyelitis), dental or periodontal abscesses, and the extent of soft-tissue spread. Contrast-enhanced CT helps distinguish cellulitis from a drainable abscess and evaluates involvement of adjacent spaces. It’s more sensitive than plain X-rays for bone and deep infections, though MRI may be better for early marrow changes.

Yes — a CT scan (including cone‑beam CT) can reliably show bony TMJ problems such as condylar fractures, osteoarthritis, erosions, joint‑space changes and ankylosis, and aids surgical planning. CT is limited for soft‑tissue assessment (articular disc, early inflammation); MRI is superior for disc position, soft‑tissue pathology and effusions. CT arthrography can add soft‑tissue detail with contrast.

Dental CT scans (including cone‑beam CT) use ionizing radiation. They are generally safe when clinically justified and done with dose‑optimised protocols, shielding, and trained operators. Radiation risks are low but not zero; cumulative exposure and pregnancy/young children need extra caution. Discuss necessity, alternatives, and protective measures with your dentist to ensure benefits outweigh the small risks.

Yes. CT is excellent at imaging bone — it shows cortical detail, fractures (including subtle or complex ones), joint anatomy and bone lesions, and can produce 3D reconstructions for surgical planning. Quantitative CT can assess bone density. It uses ionizing radiation and is less sensitive than MRI for bone‑marrow or soft‑tissue abnormalities, so choice depends on the clinical question.