3D CBCT Imaging

3D Cone Beam Computed Tomography

Cone beam computed tomography (CBCT) is a special type of x-ray used in situations where regular dental or facial x-rays are not sufficient. This type of CT scanner uses a special type of technology to generate three-dimensional (3D) images of dental structures, soft tissues, nerve paths and bone in the head and face region in a single scan. Images obtained with cone beam CT allow for more precise treatment planning.

When is a CBCT scan needed?

A 3D CBCT scan is required when conventional scans are not appropriate for treatment. 3D imaging allows precise visualization of the position of the bones in your face and jaws in relationship with your teeth and other anatomical structures like nerves, arteries and sinuses. This will allow your dentist to make a better diagnostic and provide you with the best treatment possible for your situation.

What are some typical uses of CBCT?

CBCT is used by general dentists and specialists to improve diagnosis and treatment

Planning in the following cases:

1. Dental implants

Location of anatomic structures: mandibular canal, submandibular fossa, incisive canal, maxillary sinus
Size and shape of ridge, quantity and quality of bone
Number, orientation of implants
Need for bone graft, sinus lift
Use of implant planning software

2. Oral and maxillofacial surgery

Relationship of third molar roots to mandibular canal
Localization of impacted teeth, foreign objects
Evaluation of facial fractures and asymmetry
Orthognathic surgery planning

3. Oral and maxillofacial pathology

Localization and characterization of lesions in the jaws
Effect of lesion on jaw in 3rd dimension: expansion, cortical erosion, bilateral symmetry
Relationship of lesion to teeth and other structures

4. Orthodontics

Treatment planning for complex cases when 3D information needed to supplement (or substitute for) other imaging
Patients with cleft palate
Impacted teeth
Root angulation, root resorption

5. Temporomandibular joint (TMJ)

Osseous structures of TMJ
Relationship of condyle and fossa in 3D

What are the advantages of CBCT?

Lower radiation dose than medical CT
Equivalent to ~1 Full mouth series of radiographs (FMX) or 6-7 panoramic radiographs
Thyroid shield can be used in many cases
Comfortable for patient
Open environment – no claustrophobia
Only 20 second scan
Images available almost immediately on screen
Images can be imported into other software