OPG stands for Orthopantomogram. It is a special type of x-ray image which shows the structures of the lower face, teeth and jaws all in the same view.
An OPG creates a panoramic image of the mouth as the X-ray tube and the sensor plate rotate around the patient’s head. The image shows the full length of all teeth, bones and jaw-joints. It is helpful in showing the number and position of all teeth, including those that have not grown yet. It can also show problems with the jaw bone and the TMJ. OPGs are useful as a step in planning orthodontic treatments, implant surgery, wisdom teeth removal and root canal treatment. They can also be useful to show sinuses immediately above the upper molar teeth.