What term describes a material that does not stop or absorb x-rays and appears dark gray to black on the image?

The term that describes a material that does not stop or absorb x-rays, resulting in an appearance of dark gray to black on a radiographic image, is radiolucent. Radiolucent materials allow x-rays to pass through them with little to no absorption. This is commonly seen in areas that contain less dense structures, such as air-filled spaces or soft tissues, where the x-rays can easily penetrate without much obstruction.

In contrast, radiopaque materials absorb more x-rays and appear lighter on the image due to their density, which hinders x-ray passage. Radiographic is a general term related to the process of taking radiographs or the materials used for creating images. Radiodontic does not pertain to x-ray properties and is not a recognized term in the context of radiographic imaging. Understanding the distinction between radiolucent and radiopaque is crucial for interpreting dental images accurately, as it helps dental professionals assess various structures and identify conditions based on the visibility of different tissues on the x-ray.