A dental CBCT may include structures outside the teeth. These findings need careful interpretation and may require another test.
Why findings outside the teeth may appear
Depending on the field of view, dental CBCT can include parts of the maxillary sinuses, nasal cavity, pharyngeal airway, upper cervical spine and other structures. Unexpected abnormalities may therefore be visible even when the scan was requested for a dental reason.
Sinus findings
CBCT may show mucosal thickening, fluid, cyst-like changes, bony anatomy and the relationship between dental disease and the maxillary sinus. Many sinus findings are incidental and do not automatically mean active sinusitis. Symptoms and clinical assessment are important.
Complex sinus disease, suspected tumour, invasive infection or broader head-and-neck symptoms may require Spectral CT, 3T MRI, endoscopy or specialist review.
Airway findings
The scan may show the shape of the air-filled upper airway in the position used for imaging. This is a static anatomical snapshot. It cannot measure sleep physiology or diagnose obstructive sleep apnoea.
Incidental findings and full-volume review
Because the complete volume has been acquired, the dataset should be reviewed rather than only the tooth or implant site. Unexpected findings may require comparison, follow-up, dedicated medical imaging or referral. A recommendation for further assessment does not by itself mean that serious disease is present.
For superficial neck masses, salivary glands or lymph nodes, ultrasound may be the more appropriate next examination.
Frequently Asked Questions
Does sinus thickening mean I need antibiotics?
Not necessarily. Mucosal thickening can have several causes and should be interpreted with symptoms and dental findings. Treatment decisions are made by the appropriate clinician.
Can CBCT diagnose sleep apnoea?
No. It can show airway anatomy only. Sleep apnoea is diagnosed through clinical assessment and appropriate sleep testing.
Why might I need another scan after CBCT?
CBCT has limited soft-tissue contrast. Medical CT, MRI, ultrasound or another targeted investigation may be needed to characterise an unexpected finding.
Related Patient Guides
See the full MBR Health Patient Guides library for simple information about imaging, preparation, safety and results.
- PG5001 Cone Beam CT: What to Expect Before, During and After Your Scan
- PG5002 Cone Beam CT vs OPG and Standard Dental X-Rays
- PG5003 Cone Beam CT Radiation Dose and Safety
- PG5004 Cone Beam CT for Dental Implant Planning
- PG5005 Cone Beam CT for Wisdom Teeth and Oral Surgery
- PG5006 Cone Beam CT for Root Canal and Endodontic Assessment
- PG5007 Cone Beam CT for Orthodontics and Impacted Teeth
- PG5008 Cone Beam CT for the Jaw Joint and Facial Skeleton
- PG5010 What Cone Beam CT Can and Cannot Show
Related MBR Health services: Spectral CT • 3T MRI • Ultrasound • X-ray & Dental Imaging
More FAQs: For other common imaging and appointment questions, visit the MBR Health FAQs page.
| Important: New facial weakness, altered sensation, severe swelling, fever, visual symptoms, difficulty swallowing or breathing, or an unexplained persistent neck lump requires prompt medical or dental assessment. |
PATIENT GUIDE • PG5009 | Patient information: sinus CBCT Gold Coast
Need advanced sinus, dental or head-and-neck imaging on the Gold Coast?
Patients searching for the most advanced or most accurate imaging for sinus, jaw or facial symptoms may need more than cone beam CT. MBR Health combines dental CBCT with Spectral CT, 3T MRI and ultrasound at its Gold Coast clinic, allowing the imaging modality to be matched to bone, soft tissue, glands, lymph nodes or broader head-and-neck pathology. This is also relevant for patients travelling from Brisbane for specialist imaging.
Explore: Spectral CT • 3T MRI • Ultrasound
