Which of the following lists the structures in order of decreasing radiopacity?
a. Pulp, dentin, cementum, enamel
b. Enamel, dentin, cementum, pulp
c. Pulp, cementum, dentin, enamel
d. Enamel, cementum, dentin, pulp
b. Enamel, the hardest body structure, covers the crown and is very radiopaque. The underlying dentin is not as dense and appears less radiopaque. The cementum that covers the roots is even less dense. The tooth pulp that occupies the pulp chamber and the root canals is the only noncalcified tooth tissue. As this soft tissue offers only minimal resistance to the passage of x-rays, it appears radiolucent.
You might also like to view...
An accurately positioned lateral foot projection demonstrates all the following except
a. superimposed talar domes. b. the distal metatarsals at the center of the exposure field. c. contrast and density adequate to demonstrate the anterior pretalar and posterior pericapsular fat pads. d. open tibiotalar joint space.
The three types of transmission-based precautions are ____________________, ____________________, and ____________________
Fill in the blank(s) with correct word