OPG stands for Orthopantomogram. It is a panoramic scanning dental X-ray of the upper and lower jaw. It shows a two-dimensional view of a half-circle from ear to ear.
The most common use is to determine the status of wisdom teeth and trauma to the jaws.
Some of the advantages of OPG are:
- Broad coverage of facial bones and teeth
- Low patient radiation dose
- Convenience of examination for the patient (films need not be placed inside the mouth)
- Ability to be used in patients in whom the opening is restricted eg trismus
- Patient's ready understandability of panaromic films
OPGs are used by Dentists to provide information on:
- Impacted wisdom teeth- diagnosis and treatment planning
- Finding the source of dental pain
- Assessment for the placement of dental implants
- Caries detection, especially in the inter-dental region
- Carcinoma in relation to the jaws
The procedure is simple, brief and is painless.There is no special preparation required and there are no after effects.