The safe interaction of dental materials with the rest of the body is defined as the materials
A. radioactivity
B. carcinogenicity
C. biocompatibility
C. biocompatibility
The study of dental materials consists of
A. the chemical reaction of the material
B. the physical reaction of the material
C. the manipulation
D. all of the above
D. all of the above
The internal reaction to an externally applied force is
A. strain
B. stress
C. hardness
D. elasticity
B. stress
Which of the following restorative materials is most likely to fracture under compressive stress?
A. amalgum
B. composite resin
C. porcelain
C. porcelain
What restorative material is the least soluble?
C. porcelain
Corrosion is of greatest concern for which of the following restorative materials?
A. gold
B. composite resin
C. amalgam
C. amalgam
Surface discoloration of a metal restoration is called
tarnish
Restorative materials with values of thermal conductivity similar to enamel include
composite resin
An example of galvanism is
amalgam contacting composite
Microleakage may be responsible for
A. recurrent decay
B. marginal staining
C. postoperative sensitivity
D. all of the above
D. all of the above
An excessive film thickness may cause
improper seating of the restoration
The leakage of fluids and debris extending along the tooth restoration interface is called?
microleakage
Materials used for the restoration of enamel need high
Vitality
Color shades can vary depending on the incident light or course of light. This effect is called
metamerism