What Cone Beam CT Can and Cannot Show

CBCT is excellent for teeth and bone, but it is not a complete examination of the head and neck.

What CBCT is good at showing

• Teeth, roots and surrounding jaw bone.
• Impacted and supernumerary teeth.
• Dental implant sites and important bony landmarks.
• Selected root-canal anatomy and periapical bone change.
• Bony TMJ surfaces and degenerative change.
• Selected jaw lesions, fractures and postoperative anatomy.
• The bony walls of the sinuses and nasal cavity.

What CBCT is limited at showing

• Muscles, glands, lymph nodes and other soft tissues.
• The TMJ disc and ligaments.
• Nerves themselves, although their bony canals may be visible.
• Blood vessels and vascular disease.
• Brain and intracranial structures.
• Early marrow or soft-tissue infection.
• Most head-and-neck cancers and tumour extent.
• Functional airway obstruction or sleep apnoea.

When medical CT may be needed

Conventional medical CT may be more appropriate for major trauma, acute infection, soft-tissue swelling, broader sinus or neck assessment, cancer staging, vascular questions or when intravenous contrast is required. MBR Health’s Spectral CT can add iodine and material information in selected medical indications.

When MRI or ultrasound may be needed

3T MRI may be preferred for the brain, nerves, bone marrow, TMJ disc, muscles and many soft-tissue tumours. Ultrasound is useful for selected salivary glands, thyroid, superficial masses, lymph nodes and image-guided biopsy.

Why multi-modality assessment matters

Pathology is variable and often does not fit within a single imaging technique. CBCT may provide the dental and bony component of the answer, while clinical examination and another modality provide the soft-tissue, functional or biological information required for a confident diagnosis.

Frequently Asked Questions

Does a normal CBCT mean there is no cause for my pain?

No. Pain can arise from soft tissues, nerves, muscles, referred pain or disease below the detection limits of CBCT.

Can CBCT be used as a cancer screening scan?

No. It may incidentally show some bony abnormalities, but it is not a validated general cancer-screening examination.

Who decides whether another test is needed?

The radiologist may recommend further imaging, and the referring dentist or medical practitioner decides the next step in the context of your symptoms and examination.

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
• PG5009  Sinuses, Airways and Incidental Findings on Dental CBCT

Related MBR Health services: X-ray & Dental Imaging  •  Spectral CT  •  3T MRI  •  Ultrasound

More FAQs: For other common imaging and appointment questions, visit the MBR Health FAQs page.

PATIENT GUIDE  •  PG5010  |  Patient information: advanced radiology Gold Coast

Searching for the most accurate radiology on the Gold Coast or comparing Brisbane imaging providers?

Patients looking for the best radiology, most advanced imaging, expert interpretation or the most accurate scan should be cautious of one-size-fits-all claims. Accuracy depends on choosing the right modality and protocol for the clinical question. MBR Health is a Gold Coast imaging practice offering dental CBCT, 3T MRI, Spectral CT, ultrasound and digital X-ray, allowing patients from the Gold Coast and Brisbane to access a multi-modality diagnostic pathway when one scan is not enough.

Explore: X-ray & Dental Imaging  •  3T MRI  •  Spectral CT  •  Ultrasound