Midterm Exam Review Flashcards
A(n) ______ reaction is the effect of an electrical shock that results when two metals come into contact.
Galvanic
A type of dental restorative material that is nonmetallic, is resistant to heat and corrosion, and resembles clay is _______.
ceramic
For a material to become hardended or set, it is said to be ___________.
cured
To bond or attach two items together is to _______________.
adhere
_______ is a soft, silvery white metaillic chemical element that resembles platinum.
Palladium
____ is a term used to bring a tooth or teeth back to their natural appearance.
Restorative
An object within the amalgam capsule used for pounding or pulverizing is a _____.
pestle
____ is a solid white, translucent ceramic material made by firing pure clay and then glazing it.
Porcelain
An artistically pleasing and attractive apperance is said to be _____.
esthetic
_____ is a soft, yellow, corrision-resistant metal used in the making of indirect restorations.
Gold
The property of a liquid that prevents it from flowing easily is the ______.
viscosity
____ is a mixture of alloys triturated with mecury to produce a restorative material.
Amalgam
______ refers to how a dental material hardens or sets by means of a chemical reaction.
auto-cure
A(n) _________ is a microscopic area where moisture and contaminants can enter.
microleakage
A(n) _______ is a combination of two or more metals.
Alloy
______ is the means of preparing a tooth surface for retaining or holding something in place.
retention
Something that is round is said to be ____________.
spherical
_____ is the distortion or change produced by stress.
Strain
An internal resistance to an externally applied force is referred to as ______.
stress
_____ is an inorganic material that adds strength and other characteristics to composite resins.
filler
What type of reaction does a dental material undergo when distortion occurs?
A dental material undergoes stress when distortion occurs.
What happens to a dental material when it is exposed to hot & cold?
A dental material undergoes contraction and expansion when it is exposed to hot & cold.
What is a source of galvanic action?
Saliva (salt conducting electrical currents) and two metals (acting as a battery) are source of galvanic action.
What are the four properties that must be considered in the application of a dental material?
Flow, adhesion, retention, and curing
How does an auto-cured material harden or set up?
An auto-cured material hardens, or sets up, through a chemical reaction of the materials being mixed together.
What metals make up the alloy powder in amalgam?
Contains silver, tin, coppper and zinc
Would dental amalgam be placed in anterior or posterior teeth?
Dental amalgam would be placed in posterior teeth. Composite resins are used in anterior teeth due to esthetics
What does copper provide to an amalgam restoration?
Copper provides strength and corrosion resistance to amalgam
Where do you dispose of amalgam scraps?
Amalgam scraps are placed in a wide-mouthed, air-tight container marked “noncontact amalgam waste for recycling.” When the container is full, it is sent to a recycler.
How is the amalgam triturated?
Amalgam is triturated in an amalgamator.
Which filler type of composite resin is recommended because of its versatility?
Hybrid resin is recommended for its versatility
When composite resins are light-cured, what factors might contribute to the need for a longer curing time for the material?
Depth of restoration and color might contribute to the need for a longer curing time.
What item is used to determine the color of composite for a procedure?
a shade guide is used to determine the color of composite
What is the final step in finishing a composite resin?
The final step is the use of a polishing paste
What are some of the most common uses of glass ionomer materials?
Commonly used as restorative materials, liners, bonding agents, and permanent cements.
What does the abbreviation IRM stand for?
IRM stands for intermediate restorative material
How could IRM be utilized in a pediatric practice?
IRM can be utilized in a pediatric practice to restore primary teeth that are about to be replaced by permanent teeth.
What material would you use to prepare for provisional coverage?
Acrylic resin or composite resin would be used to prepare for provisional coverage.
How many drops of monomer per tooth are recommended when acrylic resin is mixed for a provisional restoration?
the recommended amount is 10 drops of monomer per tooth
What are the three noble metals used in dentistry?
Gold, palladium, platinum
What type of restoration is made in the dental laboratory?
Indirect restorations are made in the dental laboratory
What type of reaction does a dental material undergo when a person is chewing?
Compressive stress
What happens to a dental material when it is exposed to extreme temperatures of hot and then cold?
Contraction & expansion
Which is an example of how galvanic action can occur?
Salt within saliva
touching of two metals
How does an auto-cured material harden or set?
by chemical reaction
the correct makeup of the allow powder in amalgam.
silver, tin, copper & zinc
Why would dental amalgam not be placed in anterior teeth?
Esthetics
Most amalgams have high copper content. What does copper provide to amalgam restorations?
Strength & Corrosion resistance
Where are amalgam scraps disposed of?
In an airtight container
What is used to triturate capsulated dental materials?
Amalgamator
The term commonly used to refer to dimethacrylate is _____.
BIS-GMA
Which filler type of composite resin has the strongest makeup and is used most commonly for posterior restoratations?
Macrofilled
In light-curing of composite resins, which factor can affect curing time of the material?
Depth or extent of restoration
What is used to determine the color of composite resin material for a procedure?
Shade guide
The final step in finishing a composite resin is ___________.
use of a rubber cup and polishing paste
The acronym IRM stands for…
intermediate restorative material
What temporary restorative material would be selected for a class II cavity preparation?
IRM
Which material would be selected for the fabrication of provisional coverage?
Acrylic resin
The three noble metals used in making indirect restorations are _______.
Gold, palladium and platinum
what type of restoration is always made in a dental laboratory setting ?
indirect restoration
