Cone Beam CT (CBCT)

A Cone Beam CT is a series of images which is used to create a three dimensional image of the jaw, teeth and temporomandibular joints.

Cone Beam CT is used to:

  • Plan dental surgery
  • Assess the jaw and teeth
  • Assess the teeth in relation to the nerves
  • Assess pathology

Your appointment and preparation

A referral and an appointment are required for a Cone Beam CT examination.

There is no preparation for a Cone Beam CT.

What can I expect during my Cone Beam CT?

You will be asked to remove any jewellery, hair ties or metal objects in the region of the head and face before the examination.

The radiographer will position you in the specially designed Cone Beam CT machine. You will be asked to face the machine, rest your chin on a rest, and to bite gently on a bite piece to separate your teeth. Your head will be held still and in the correct position in an adjustable head holder. Sometimes your specialist will provide you with a special plate to wear during your scan. Once you are in position, the Cone Beam machine will rotate around your head to collect a series of data from which 3D reconstructions of your jaw and teeth can be produced. The examination takes only a few seconds.

What are the risks and side effects?

Cone Beam CT emits small doses of radiation. At Lake Imaging you can be assured that by using the latest technology and with staff trained in radiation reduction techniques; radiation doses are kept as low as reasonably possible.

If it is possible that you may be pregnant, please tell our radiology team before your x-rays are taken to avoid any risks to your unborn child.

For further information regarding radiation safety please visit:

Who will perform my Cone Beam CT and write the report?

At Lake Imaging your examination will be carried out by a Radiographer (or Medical Imaging Technologist), who has a degree in Medical Imaging and is accredited by the Australian Institute of Radiography. Our Radiologist, a medical Doctor specialising in the interpretation of medical images, will produce a report for your referring doctor detailing the findings of your Cone Beam CT examination.

How do I obtain my results?

You will be provided with a CD containing all of the Cone Beam CT images to take back to your dental specialist. These images will be used by your dental specialist to plan your dental procedures using specialised computer software. The images from your Cone Beam CT will also be reconstructed into 3D images, and a report will be provided by reporting doctor within 48 hours of your images being taken.

Please ensure that you make a follow up appointment with your referring doctor or health care provider to discuss your Cone Beam CT results.