What does decay on a tooth xray look like?dark, light, or what no details

Caries, : Caries, proper name, tooth decay, looks like a black area eating away at the tooth. Usually, it appears between teeth and it looks like a break in the, normally white on x ray, tooth structure. Your dentist should be able to show you it very easily on an xray.

Decay : Decay is the absence of tooth material and shows up darker on an x-ray. Because the beam passes more easily through this area and gives more exposure to the film or sensor.

In : In a standard dental x-ray, you will see several variations of grey when looking at a tooth. The darkest areas (those around the tooth) is air space. Literally the is nothing stopping the beam so the film or sensor is maximally exposed and dark. In the opposite extreme you will see silver fillings and metal crowns as white or clear or "bright" on the film or monitor screen. With this in mind, now looking at the tooth, you will see a nerve on the middle which is sort of a holl.

Dark: On an xray, decay will look like a dark shadowy area.