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X-rays use radiation to take pictures of bones and other parts inside the body. An OPG is a panoramic X-ray of the upper and lower jaws, including the teeth. The OPG unit is specifically designed to rotate around the patient's head during the scan. An OPG will take approximately 20 seconds.An OPG can be used to look for :
It can also be used for surgical planning.
Your doctor, dentist or dental specialist knows the risks of having an OPG and will consider the risks before recommending you have this type of X-ray. Possible risks are :
Bring your referral letter or request form and all OPG X-rays taken within the last 2 years with you. Leave the X-rays with the medical imaging staff as the doctor may need to look at them. The staff member will tell you when these are ready to be picked up. Leave all jewellery and valuables at home.
There is no special preparation for an OPG. You may be asked to remove any metal objects.
If you are or may be pregnant.
Medical imaging staff will ask you to sit on a chair or stand for the OPG. It is important that you tell the staff if you have difficulty sitting or standing unassisted. The radiographer may place a protective shield over the parts of your body not being X-rayed, or you may be asked to wear a protective apron.
When you are ready, the radiographer will go behind a screen to start the OPG machine. They will ask you to be still during the OPG. When your OPG is finished you will be asked to wait while the radiographer checks the pictures. The procedure usually takes about 5 minutes including time taken to get ready.
A written consent is generally not required for an OPG.
You have the right to refuse an examination and may do so if you wish.
The amount of time it takes for you to get your results will differ depending on where you get your scans done. The medical imaging doctor will look at the images and issue a report. The images may be on films on a CD or on a computer. Ask whether you should wait to take the images and report with you, or whether they will be sent to your doctor or dentist. You will need to make an appointment to discuss the images and report with your doctor or dentist.
You will be able to go soon after the OPG is finished and can continue with normal activities.
Lateral cephalogram is a side view x-ray of the face, which demonstrates the bones and facial contours in profile. Cephalogram with OPG is requested to obtain measurements and determine relationships of the structures of the lower face for orthodontic treatment.
For lateral cephalogram you will be asked to stand straight and the machine height will be adjusted. Cone shaped plastic supports are then gently pushed into each ear to position the head for true side view. The machine will be scanning the side of face for about 10 seconds and you need to remain very still.
The images and report are normally ready on the following day. Hard copies of images will be provided on a film format. Soft copy will be also provided on CD. Electronic transfer of both images and report can be done for the referring doctors with online health system link.