Deck 20: Restorative and Esthetic Dental Materials

Question 1

Tooth conditioner (acid etchant) contains which acid?

A) Sulfuric
B) Hydrochloric
C) Phosphoric
D) Citric

Answer 1

Phosphoric

Question 2

Inorganic fillers in composite resin:

A) contribute to fluidity
B) add strength
C) give the resin color
D) reinforce chemical bonds

Answer 2

add strength

Question 3

A luting agent:

A) removes the smear layer of debris
B) cements a casting to the tooth permanently
C) is applied in a thick, putty-like layer.
D) lightens age-related tooth discoloration.

Answer 3

cements a casting to the tooth permanently

Question 4

Single-surface amalgam capsules contain how much alloy?

A) 800 mg
B) 600 mg
C) 400 mg
D) 200 mg

Question 5

Which ensures an accurate ratio of alloy and mercury, when mixing dental amalgam?

A) Use only single-use capsules
B) Measure accurately with a weighted scale
C) Empty capsule contents before trituration
D) Avoid breaking the capsule membrane

Question 6

The process of mixing alloy and mercury together is:

A) trituration
B) retention
C) polymerization
D) galvanism

Question 7

A dental material that exhibits excellent mechanical properties withstands:

A) the force, stress, and strain of the oral environment
B) temperature changes in the mouth
C) scratching or abrasion
D) permanent deformation by tensile or compressive forces

Question 8

Which metal suppresses the oxidation of amalgam restorations?

A) Silver
B) Tin
C) Copper
D) Zinc

Question 9

The most widely accepted restorative material in dentistry is:

A) amalgam
B) composite
C) porcelain
D) gold

Question 10

When mixing polycarboxylate as a base, the completed mix should:

A) be fluid
B) have a shiny, glossy surface
C) string up and break, 1 inch from the slab
D) be formed in a small ball

Question 11

In which process is resin material changed from a pliable state to a hardened restoration?

A) Polymerization
B) Etching
C) Bonding
D) Cementation

Question 12

The degree to which a restoration dissolves in the mouth is a measure of which property?

A) Ductility
B) Solubility
C) Corrosivity
D) Malleability

Question 13

Intermediate restorative material (IRM) is reinforced:

A) zinc phosphate
B) composite resin
C) zinc oxide eugenol
D) calcium hydroxide

Question 14

Without the protection of a dental base in a deep tooth preparation, there may be:

A) premature contact with the restorative material
B) occlusal trauma
C) postoperative sensitivity and damage to the pulp
D) premature loss of the restorative material

Question 15

The silver filling material, used to restore premolars and molars, is called:

A) amalgam
B) composite
C) glass ionomer
D) acrylic resin

Question 16

Which cement inhibits recurrent decay?

A) Zinc oxide eugenol
B) Zinc phosphate
C) Glass ionomer
D) Polycarboxylate

Question 17

Which dental cement is most versatile, and least irritating to the pulp?

A) Zinc oxide eugenol (ZOE)
B) Polycarboxylate
C) Zinc phosphate
D) Glass ionomer

Question 18

Cavity varnish:

A) opens dentinal tubules
B) reduces leakage around a restoration
C) stimulates the growth of reparative dentin
D) strengthens composite resin material

Question 19

A dental liner is placed:

A) along the inside cavity walls
B) mesial and distal of the tooth
C) in the deepest area of the tooth preparation
D) along the interproximal margin

Question 20

Which is NOT true regarding calcium hydroxide?

A) It protects the pulp from chemical irritation through its sealing abilities.
B) It stimulates the production of reparative or secondary dentin.
C) It is compatible with all types of restorative materials.
D) It is frequently selected as a dental base for deep cavity preparations.

Question 21

Intermediate restorative material (IRM) is dispensed in which ratio?

A) 1 scoop of powder to 1 drop of liquid
B) 1 scoop of powder to 2 drops of liquid
C) 2 scoops of powder to 1 drop of liquid
D) 2 scoops of powder to 3 drops of liquid

Question 22

Etching time is always 15 to 30 seconds.

Question 23

The consistency of temporary cement should be slightly thicker than that of a luting agent.

Question 24

Type I glass ionomer cement is a luting agent.

Question 25

Most tooth whitening products are made from different concentrations of peroxide-based ingredients.

Question 26

When preparing for glass ionomer cementation, the tooth should be thoroughly dried to decrease postoperative sensitivity.

Question 27

Cavity varnish is applied to control leakage with composite and glass ionomer restorations.

Question 28

Luting agents are mixed to a very thick consistency to temporarily hold castings in place.

Question 29

Intermediate restorative material (IRM) must be completely mixed within:

A) 5 seconds
B) 10 seconds
C) 1 minute
D) 2 minutes

Question 30

The ideal temperature of the glass slab is 98.6° F when mixing zinc phosphate cement

Question 31

Financial barriers are one reason a temporary restoration would be placed instead of a permanent restoration.

Question 32

Copper is a component of dental amalgam alloy.

Question 33

When selecting a composite shade, fluorescent lighting helps in finding a natural match.

Question 34

Polycarboxylate cement is a luting agent for cast restorations and the cementation of orthodontic bands.

Question 35

A properly mixed dental base should resemble the consistency of putty.

Question 36

A major success associated with dentin bonding is the removal of enamel via etching.

Question 37

Polycarboxylate cement liquid has a limited shelf life.

Question 38

A proper mix of amalgam alloy is free of dry alloy particles and holds together as one unit.

Question 39

After a tooth surface has been etched, it should be desiccated (completely dried) so absolutely no moisture remains.

Question 40

TempBond™ is an example of a type I ZOE cement.