Selection of Imaging Modalities in Non-odontogenic Orofacial and Jaw Pain.
Selection of Imaging Modalities in Non-odontogenic Orofacial and Jaw Pain.
| Clinical Presentation or Suspected Condition | Initial Imaging? | Relevant Modalities Key | Points |
|---|---|---|---|
| General screening across diagnostic categories | Consider after assessment | Panoramic radiography | Broad survey of teeth, jaws, and gross TMJ; targeted imaging may still be needed |
| Typical masticatory myalgia or uncomplicated pain-related TMD | Usually no | None initially | Image for trauma, atypical or progressive signs, or non-response |
| TMJ internal derangement: painful clicking, locking, or persistent restriction | Usually no initially | TMJ MRI (open/closed mouth) | For persistent locking, uncertainty, or planned intervention |
| TMJ osteoarthritis or ankylosis | Yes if suspected | CBCT/CT ± MRI | CT for bone; MRI for inflammation or soft-tissue ankylosis |
| Progressive asymmetry, deviation, occlusal change, or skeletal lesion | Yes | Cephalometric radiographs; CBCT/CT; SPECT selectively | Define deformity or mass; SPECT may assess active bone growth |
| Eagle syndrome | Usually yes | Thin-section CT ± 3D | Imaging must correlate with the pain pattern |
| Space-occupying or infiltrative lesion | Yes; expedite if progressive | Contrast MRI ± CT/CBCT | MRI for soft tissue and nerves; CT for bone |
| Septic arthritis of the TMJ | Urgent | Contrast CT/MRI; joint aspiration | Do not delay antibiotics or drainage |
| Uncomplicated acute maxillary sinusitis | Usually no | Sinus CT selectively | For persistent, recurrent, complicated, or odontogenic disease |
| Deep facial or cervical space infection | Urgent | Contrast CT; MRI selectively | Airway and treatment take priority |
| Meal-related gland pain/swelling or salivary obstruction | Often | US; non-contrast or contrast CT | US for gland; CT for stones, abscess, or tumor |
| New-onset trigeminal neuralgia | Generally yes | High-resolution brain/trigeminal MRI | Assess compression and secondary causes |
| Progressive sensory loss, numb chin syndrome, or perineural spread | Urgent | Contrast MRI ± CT | Image the full nerve course; CT adds bone detail |
| Post-traumatic or iatrogenic trigeminal neuropathy | Selective | CBCT/CT ± MR neurography | Seek a reversible compressive cause |
| Stable orofacial migraine or primary headache | Usually no | CT/MRI only with red flags | Image red flags, not pain intensity |
| Persistent idiopathic facial/dentoalveolar pain, BMS, or nociplastic pain | No routine imaging | Targeted imaging only | Avoid repeat imaging without new objective signs |
| Inflammatory TMJ arthritis | Often | MRI ± CBCT/CT | MRI for active disease; CT for chronic damage |
| Giant cell arteritis | Supportive | Temporal/axillary artery US | Do not delay corticosteroids when suspicion is high |
| Carotid or vertebral artery dissection | Immediate | CTA or MRA ± brain MRI | Urgent stroke pathway |
| Thoracic source or Pancoast tumor | If suspected | Contrast chest CT ± MRI | With arm/shoulder symptoms, Horner syndrome, or weight loss |