tooth emael absorbs more x-rays then dental pulp.this is known as what definition ,radioastivity or what?

Question

is it know as definition,radioactivity,differential absorption or short scale contrast?

Answer 1

huh? I would think the opposite since the enamel is the hardest substance in our body, it would allow less x-rays to penetrate the structure b/c the that part of the tooth is more dense. The area that absorb more x-rays or more sensitive to x-rays are areas that are less dense such soft tissue like gums.
Contrast usually describe that different shade of grays in your x-ray.
Not sure if I answered your question. Hope this helps