Lead. Even a thin layer of lead blocks most radiation, where bone is fairly transparent at many frequencies.
Yes, it is.
Lead
Dense materials such as bones and metals block X-rays.
Yes
I believe it is the median palatine suture. The Median Palatine suture is a radiopaque line while the Incisive Foramen is Radiolucent. The Incisive Foramen is more oval-shaped with radiopacity, therefore xrays travel through this area more easily making it more radiolucent.
Radiopaque refers to the characteristic that the dye does not allow for the passage of x-rays. A radiopaque dye would allow for structures that are not usually visible to be shown white against the black background of a developed radiograph (x-ray film).
The PDL appears as the periodontal space of 0.4 to 1.5 mm on radiographs, a radiolucent area between the radiopaque lamina dura of the alveolar bone proper and the radio opaque cementum.
Bone cysts cause fractures and damage to bone tissue
radiopaque
White
radiopaque
A broken bone is a bone that has suffered stress. Such stress could lead to several types of fractures.