What radiographic technique makes use of the radiographic keyhole?

The radiographic technique that utilizes the radiographic keyhole is the oblique lateral radiograph. This technique involves positioning the X-ray beam at an angle to create an image that captures specific anatomical details in a way that can highlight features in the area of interest. The radiographic keyhole is characteristic of this technique, allowing for visualization of structures in a more defined manner, which is crucial in various diagnostic scenarios.

In contrast, periapical radiographs focus on the entirety of a single tooth and the surrounding bone structure, bitewing radiographs are designed to show the crowns of upper and lower teeth and check for interproximal decay, and panoramic radiographs provide a broad view of the entire mouth, however, they do not specifically utilize the radiographic keyhole feature. Each of these techniques serves distinct purposes, highlighting the importance of technique selection based on the clinical situation.