Panoramic Radiograph
Definition
A single wide-field dental X-ray showing all teeth simultaneously in both jaws. The standard imaging tool for sub-adult dental age assessment because it shows every tooth's formation stage at once.
- Coverage
- All teeth, both jaws, single image
- Primary use
- Sub-adult dental age assessment
- Shows
- Formation stage of every tooth at once
- Reference standard
- London Atlas
Common questions
Why is a single panoramic image preferred over multiple periapical films for age assessment?+
Age estimation methods like those in the London Atlas score the developmental stage of every tooth relative to the others, so a single image capturing the whole dentition at once avoids the alignment and exposure variation introduced by piecing together several separate films.
What is a limitation of using panoramic radiographs for precise metric comparisons?+
The image involves geometric magnification and some distortion inherent to the rotational scanning technique, which is acceptable for staging tooth development but less suitable when a case calls for precise linear measurement between two points.
Related terms
- Calcification Stage
- A discrete described increment of tooth mineralisation, from initial deposition of the crown cusps through completion of root and apex. Calcification staging...
- Demirjian Stages (A-H)
- Eight illustrated calcification stages covering a tooth from initial cusp formation (A) to complete root apex closure (H), scored from a standardised...
- Eruption Sequence
- The order in which teeth emerge into the oral cavity. Less precise than calcification staging because eruption timing shows more individual variation,...
- London Atlas
- A visual atlas published by AlQahtani, Hector, and Liversidge in 2010 showing expected tooth development and eruption for all deciduous and permanent...
- Population Bias (Dental Methods)
- The systematic difference between the reference sample on which a method was calibrated and the study population to which it is applied....