Chapter 3 Flashcards
What is the behavior of molecules in liquids?
Molecules are not confined to a specific pattern.
What is viscosity?
Viscosity is a measure of a fluid’s resistance to flow.
What are thixotropic materials?
Thixotropic materials are those that become less viscous when agitated.
How are materials classified?
Materials are classified by application, how used or fabricated, and expected longevity.
What are the types of restorative materials?
Materials may be classified as direct restorative materials or indirect restorative materials.
What are the categories of longevity in restorations?
Longevity includes permanent restorations, temporary restorations, and intermediate restorations.
What components are required for dental materials?
Dental materials require the combination of two components: water and powder, liquid and powder, paste and liquid, paste and paste, or paste and initiator (blue light).
What occurs when components are mixed together?
When components are mixed together, a reaction occurs.
What types of reactions can occur when mixing components?
The reactions may be physical or chemical, including chemical set, light-activated, or dual set.
What variables affect the manipulation of materials?
Variables include ratios of components, external variables, and shelf life.
What defines a material’s characteristics?
A material’s characteristics are defined by its physical structure.
In what forms are materials available?
Materials are available in a variety of forms.
Why are manufacturer’s instructions important?
Manufacturer’s instructions are essential to produce the best results.
