Quiz 1 Flashcards
A _____ material will flow more easily under mechanical pressure.
thixotropic
Thixotropic materials are liquids that flow more easily under mechanical forces.
What is the best resource for choosing which dental material to use?
All of the above are good resources.
Which of the following are considered to be therapeutic dental materials?
Medicated bases and topical treatments for periodontal disease
Fluorides and pit and fissure sealants are preventive materials.
Of the following, which is not an application of a material’s classification?
All of these are correct.
Altering the set ratios of a material for any purpose will do what?
Produce adverse results
These ratio changes are variables that permit the clinician to alter manipulation and reaction times for some materials.
Which of the following is not a classification of dental materials?
Biological
Which of the following restorative techniques was first introduced in 1955?
Acid-etch technique
The acid-etch technique was introduced in 1955.
What is the thermal conductivity of composite resin?
Similar to tooth structure
What is Dr. Frederick McKay credited with?
Noting dental fluorosis in Colorado Springs
Dr. Frederick McKay is credited with noting dental fluorosis in Colorado Springs in 1901.
When an object cannot resist force, _____ occurs.
deformation or distortion
_____ force is applied when two surfaces slide against each other in opposite directions.
Shearing
Of the three types of forces, which is most concerned with the stretching of a material?
Tensile force
Which of the following is an example of a secondary rather than primary bond?
Hydrogen bond
A hydrogen bond is an example of a secondary bond.
Which of the following is not a primary bond?
Hydrogen
If the molecules of a solid are arranged in a random form with no regular pattern, the solid is called:
amorphous
If the molecules of a solid are arranged in a random form with no regular pattern, the solid is called amorphous.
Since 2005, the American Dental Association (ADA) Seal of Acceptance is awarded to _____ products.
consumer but not professional
Contact between two dissimilar metals in the mouth may result in what reaction?
All of the above are possible.
Microleakage into the interface between tooth structure and restorative material is responsible for much of the _____ observed following tooth restoration.
1, 2, 3
Microleakage into the interface is responsible for much of the recurrent decay, marginal staining, and postoperative sensitivity.
Until 1970, which of the following groups of dental auxiliaries were allowed to perform intraoral functions in all states?
1
Until 1970, only the dental hygienist was allowed to perform intraoral functions in all states.
Stress is the amount of force exerted from within an object, and _____ is the amount of change that the force has produced.
strain
