Module exam chapters 43 to 47

Which professional organization evaluates a new dental material? a. FDA b. DDS c. ADA d. MDA

C. ADA

What happens to a dental material when it is exposed to extreme temperatures of hot and then cold? a. Contraction and expansion b. Melting and hardening c. Galvanic reaction d. Strain and stress

a. Contraction and expansion

Why is dental amalgam not placed in anterior teeth? a. Esthetics b. It is not strong enough c. It is difficult to finish d. Retention

a. Esthetics

Which sequence is recommended for the application of supplementary materials for a deep restoration? a. Liner, base, dentin sealer, bonding system b. Base, liner, dentin sealer, bonding system c. Bonding system, base, liner, dentin sealer d. Dentin sealer, base, bonding system, liner

a. Liner, base, dentin sealer, bonding system

Which filler type of composite resin has the strongest make up and has been used most commonly for posterior restorations? a. Macrofilled b. Microfilled c. Monofilled d. Autofilled

a. Macrofilled

An insulating base is placed to ________. a. Protect the pulp form thermal shock b. Protect the pulp from moisture c. Help soothe the pulp d. Protect the pulp from the restoration

a. Protect the pulp form thermal shock

IF the powder of a dental material is dispersed in increments, what size increment is commonly brought into the liquid first? a. Smallest b. Medium c. Half of the material d. Largest

a. Smallest

What type of reaction does a dental material undergo when a person is chewing? a. Thermal change b. Compressive stress c. Galvanic reaction d. Corrosion

a. Thermal Change

On what type of mixing pad is ZOE mixed? a. Treated paper pad b. Glass c. Plastic d. Tile

a. Treated paper pad

Can a glass ionomer material be used as a restorative material? a. Yes b. No

a. Yes

Can a resin cement be used with metal casting? a. Yes b. No

a. Yes

Which material would be selected for the fabrication of provisional coverage? a. IRM b. Acrylic resin c. Amalgam d. Glass ionomer

b. Acrylic resin

What is used to triturate capsulated dental materials? a. Mortar and pestle b. Amalgamator c. Paper pad and spatula d. Bowl and spatula

b. Amalgamator

The purpose of a dental bonding material is to ________. a. Seal the dentinal tubules b. Bond restorative materials to the tooth structure c. Etch the tooth structure d. Act as a permanent restorative material

b. Bond restorative materials to the tooth structure

How does an auto-cured material harden or set? a. It air-dries b. By chemical reaction c. With light d. With heat

b. By chemical reaction

A base is placed in or on the _______ in a cavity preparation. a. Proximal box b. Cavity walls c. Enamel margin d. Pulpal floor

b. Cavity walls

The term commonly used to refer to dimethacrylate is __________ a. Alloy b. Composite resin c. Mercury d. BIS-GMA

b. Composite resin

Another name for dentin sealer is _______. a. Cement b. Desensitizer c. Etchant d. Base

b. Desensitizer

At the completion of the process for missing polycarboxylate cement, the end product should appear _________. a. Dull b. Glossy c. Streaky d. Clear

b. Glossy

Another name used to describe permanent cement is _______. a. Liner b. Luting agent c. Resin d. Base

b. Luting agent

The purpose of a dental liner is to ______. a. Make the restorative material look natural. b. Protect the pulp from any type of irritation c. Create a mechanical lock of the dental material d. Cover the smear layer

b. Protect the pulp from any type of irritation

The three noble metals used in making indirect restorations are ________. a. Gold, palladium, and platinum b. Silver, tin, and zinc, c. Mercury, copper, and tin d. Glass, porcelain, and fillers

b. Silver, tin , and zinc

How do you dissipate the heat from zinc phosphate in the mixing process? a. Cool the spatula b. Use a cool glass slab c. Decrease the temperature in the room d. Chill the material

b. Use a cool glass slab

What dental instrument is selected to press a base into the cavity preparation? a. Explorer b. Hollenback c. Condenser d. Burnisher

c. Condenser

Calcium hydroxide is placed on what tooth structure? a. Enamel b. Cementum c. Dentin d. Pulp

c. Dentin

Which variable can affect the addition or loss of water in a material? a. Time b. Speed of spatulation c. Humidity d. Moisture control

c. Humidity

Where are amalgam scraps disposed of? a. In the garbage b. Down the sink c. In an air-tight container d. In a biohazard bag

c. In an air-tight container

What type of restoration is always made in a dental laboratory setting? a. Direct restoration b. Provisional coverage c. Indirect restoration d. Temporary restoration

c. Indirect restoration

The acronym IRM stands for _______. a. Inside the restorative matrix b. Intermediate restorative material c. Interdental resin material d. International restorative material

c. Interdental resin material

What is used to determine the color of composite resin material for a procedure? a. Color palate b. Picture c. Shade quite d. Radiograph

c. Shade quide

What is removed from tooth structure before a bonding material is placed on dentin? a. Enamel b. Decay c. Smear layer d. Dentin tubules

c. Smear layer

Temp bond is supplied as _______. a. Powder and liquid b. Paste and powder c. two tubes of paste d. two liquids

c. Two tubes of paste

The final step in finishing a composite resin is _________. a. Use a diamond bur b. Use a sandpaper strip c. Use a rubber cup and polishing paste d. Use a white stone

c. Use a rubber cup and polishing paste

What unique ingredient in the powder of glass ionomer cement helps inhibit recurrent decay? a. Zinc b. Composite resin c. Iron d. Calcium

d. Calcium

What temporary restorative material would be selected for a class II cavity preparation? a. Acrylic resin b. Amalgam c. Glass ionomer d. IRM

d. IRM

The main component in the liquid of zinc phosphate is ________. a. Hydrogen peroixde b. Zinc oxide c. Resin d. Phosphoric acid

d. Phosphoric acid

For which of the following procedures would you include a temporary cement on the try setup? a. Composite restoration b. Sealants c. Amalgam restoration d. Provisional coverage

d. Provisional coverage

What does the dentin sealer seal? a. Enamel rods b. Etched tags c. Dentin tubules d. Pulpal chambers

d. Pupal chambers

Which statement is not on elf calcium hydroxide's characteristics? a. Protects the tooth from chemical irritation b. Produces reparative dentin c. Is compatible with all restorative materials d. Replaces the need for a dentin sealer

d. Replaces the need for a dentin sealer

Select the correct makeup of the alloy powder in amalgam. a. Porcelain, glass, zinc, and composite b. Gold, tin, silver, and aluminum c. Mercury, silver, zinc, and tin d. Silver, tin, copper, and zinc

d. Silver, tin, copper, and zinc

In light-curing of composite resins, which factor can affect curing time of the material? a. Type of tooth b. Depth or extent of restoration c. Surface that is being restored d. Type of composite

d. Type of composite

Which supplemental material is contraindicated under composite resins and glass ionomer restorations? a. Etchant b. Calcium hydroxide c. Dentin sealer d. Varnish

d. Varnish

__________ is/are (an) example(s) of an enamel bonding procedure. a. Orthodontic brackets b. Sealants c. Amalgam d. a and b

d. a and b

Most amalgams have a high copper content. What does copper provide to amalgam restorations? a. Strength b. Malleability c. Corrosion resistance d. a and c

d. a and c

The key ingredient in varnish is ________. a. Resin b. Acid c. Eugenol d. Sealant

a. Resin

What effect does eugenol have on the pulp? a. Regenerative b. Soothing c. Irritant d. Resorative

b. Soothing

what type of zinc oxide eugenol (ZOE) is used for permanent cementation? a. Type 1 b. Type 2 c. Type 3 d. Type 4

b. Type 2

Which is an example of how galvanic action can occur? a. Salt within salvia b. Leakage of a material c. Touching of two metals d. a and c

d. a and c

How is the liquid portion of polycarboxylate cement supplied? a. Tube b. Squeeze bottle c. Calibrated syringe d. b and c

d. b and c