The story
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A radiograph taken to visualize the crowns of the posterior teeth and the height of the alveolar bone in relation to the cementoenamel junctions, commonly used to examine for interdental caries and recurrent caries under existing restorations. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.