Dentistry• Updated 21 October 2026
Dental X-ray (OPG)
X-rays of the teeth and jaw, including a panoramic OPG, to find hidden dental problems.
Results: Immediately
Quick Summary
Primary Purpose
To look for decay between teeth, infections, wisdom teeth and jaw problems.
What It Measures
Teeth, roots and jawbone.
Preparation
Remove jewellery and glasses.
Overview
Dental X-rays use very low radiation.
Tell the dentist if you might be pregnant.
What It Measures
Teeth
Decay and roots.
Jaw
Bone and wisdom teeth.
How It's Performed
- 01
Position
Bite on a holder or stand in the OPG machine.
- 02
Picture
Keep still for a few seconds.
- 03
Review
Dentist explains.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Dental Exam(opens in a new tab) · MedlinePlus, US National Library of Medicine