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Orthopantomogram (OPG)

What is orthopantomography?

Orthopantomography, also known as an OPG X-ray (or simply OPG), panoramic radiography, or a pantogram is a type of X-ray scan that gives a panoramic or wide view of the lower face. It can display all the teeth on both jaws on one film, including those that have not surfaced or erupted yet, such as wisdom teeth. It also offers a view of the jawbone and the temporomandibular joint (TMJ), which connects the jaw to the rest of the skull.

OPG (Orthopantomogram) and Cephalogram are types of dental x-rays. An OPG produces a panoramic view of the jaw whilst a cephalogram is an x-ray of the facial structures. A lateral cephalogram produces a side profile image of the face, jaws and soft tissues to assess the relation of the teeth to the jaws, the jaws to the skull, and the relation of the soft tissues to the teeth and jaws.

What equipment is used during an OPG examination?

A specialised x-ray machine is used to produce the images. During an OPG examination, part of the equipment will rotate around the patient’s head while they remain in a still, standing or sitting position.>

What conditions can be diagnosed by a dental x-ray?

OPGs are commonly used during a general dental check up, but can also be conducted to monitor and diagnose:

Cephalograms can help predict mandibular growth in children by allowing accurate orthodontic measurements to be made and can help determine the changes that have occurred with treatment.

  • Teeth (general review)
  • Teeth (cavities)
  • Teeth impaction
  • Fractures
  • Dislocation
  • Infection
  • Tumours
  • Sinuses

What are the benefits of a dental x-ray?

Dental x-rays are quick, painless, and expose the patient to a minimal amount of low-level radiation, whilst providing invaluable information to Dentists, Orthodontists and alike.