Chapter 43 Pretest Flashcards
test questions
ADA
The council on dental materials, instruments, and equipment was formed as a subcommittee by the American Dental Association (ADA)
Alloy is ?
When two or more metallic elements combine in the fluid state
Retention is
firmly holding two things together when they are not adhering to each other naturally
What type of reaction does a dental material undergo when a person is chewing ?
Compressive stressW
what happens to a dental material when it is exposed to extreme temp. of hot and then cold ?
Contraction and expansion
Which is an example of how galvanic action can occur ?
touching two metals & Saliva within salt
Hoe does auto-cured material harden or set?
By a chemical reaction
The correct make up of the alloy powder in amalgam is ?
Tin, Copper, Silver, and zinc
Why would dental amalgam not be placed on anterior teeth?
Esthetics
Most amalgam have a high copper content , why ?
Copper provides strength and corrosion resistance to the amalgam
where does amalgam scraps disposed of
In an airtight container
What is used to triturate capsulated dental materials?
Amalgamator
term used for dimethacrylate
Bis-GMA
What composite resin has the strongest makeup ?
Macro filled
In light curing of composite, what factor can affect curing time of the material ?
Depth or extent of restoration
What is used to determine the color of composite
a shade guide
final step of a composite is ?
polishing
IRM stands for ?
Intermediate restorative Material
What temporary restorative material would be selected for a class II cavity preparation?
IRM
What material is selected for the fabrication of provisional coverage?
Acrylic resin
Three noble metals
Gold, Platinum, and Palladium
What type of restoration is always made in a dental lab?
Indirect
