Restorative materials such as amalgam and composites are held in place in the tooth by ____________
a. cementing agents
b. mechanical retention
c. chemical retention
d. none of the above
b
RATIONALE: Restorative materials such as amalgam and composites are held in place in the tooth by mechanical retention.
You might also like to view...
Early Chinese methods of medical treatment included all of the following techniques except:
A) acupuncture. B) administration of medicines. C) treatment of entire body and spirit. D) scientific theory.
The second letter in the prefix of a DEA number represents:
a. the first letter of the practitioner’s first name b. the first letter of the practitioner’s last name c. the first letter of the practitioner’s middle name d. a random letter assigned by the government
Polar drugs that are not metabolized are excreted unchanged in the urine
Indicate whether the statement is true or false
The partial pressure of oxygen in the alveoli is _______ mm Hg, while the partial pressure of carbon dioxide in the alveoli is _______ mm Hg.
A. 70, 28 B. 88, 30 C. 90, 50 D. 104, 40