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How it works
An orthopantomogram (OPG) uses X-rays to produce a panoramic frontal wide view of the mouth and teeth.
A lateral cephalogram is a radiograph of the skull which also uses X-rays, however the resultant image is a side-on view.
A dental examination is used to assess:
- Tooth or gum disease
- Maxilla
- Mandible joints
What to expect
While there is no special preparation for an OPG, you may be asked to remove any metal objects from around your head or neck.
The radiographer will ask you to sit on a chair/stool or stand for the OPG. It is important that you tell the staff if you have difficulty sitting or standing unassisted. When you are placed in the correct position, the radiographer will go behind a screen to start the OPG machine. They will ask you to be very still during the OPG whilst the machine moves around your head taking the picture.
When your OPG is finished you will be asked to wait while the radiographer checks the images. The procedure usually takes about 5 minutes.
Day of the scan
- The night before. A good night's sleep.
- 15-30 mins prior. Arrive at practice.
- 5-10 mins prior. The OPG.
- Time to go home. Time to go home.
Frequently asked questions
Do I need to wear a lead gown or apron during the examination?
Experts in medicine and radiation physics have recently concluded that the use of lead shielding during medical imaging examinations is no longer necessary.
Do I get a copy of my X-ray?
Images can now be viewed by the referring specialist via a digital portal. If a hard copy film is preferred by a specialist, the radiograph can be printed.
Can I still wear lead shielding if I want to, for my child or myself, including if I am pregnant?
The Radiographer may be able to apply shielding while ensuring that the quality of the examination is not compromised and it will not inadvertently increase the dose.