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...
Which of the following statements made by a female patient would make the EMT highly suspicious of mittelschmerz?
A) "I had some sharp belly pain but it seems to be going away now." B) "My menstrual flow seems heavier than normal." C) "I finished my period yesterday and now I am nauseated." D) "It seems that I have had a yellow vaginal discharge for two days."
What are the two basic categories of valves that are used in a water supply system?
What will be an ideal response?
Which of the following organizations offers certification exams for Phlebotomy Technician, EKG Technician, and Medical Transcriptionist?
A. American Association of Medical Assistants (AAMA) B. American Medical Technologists C. Accrediting Bureau of Health Education Schools D. National Healthcare Association
According to the author, watching sports on television often leads viewers to be
A. angry and violent only when they are watching with a crowd. B. targets of violence done by people who dislike sports. C. so hostile that it creates a context in which violence is common. D. emotionally expressive, but not overtly violent.