Deck 44: Dental Liners, Bases, and Bonding Systems

Question 1

A desensitizer could be indicated for which of the following procedures?

A)Amalgam
B)Sealants
C)Provisional coverage
D)Fluoride

Answer 1

Amalgam

Question 2

Calcium hydroxide liner is a frequently used liner because it:

A)stimulates production of secondary dentin.
B)can be used with only composite resin material.
C)acts as a base as well as a liner.
D)does not require the use of a filling material.

Answer 2

stimulates production of secondary dentin.

Question 3

The placement of _____ is an example of enamel bonding.

A)sealant
B)dental varnish
C)calcium hydroxide
D)dental base

Answer 3

sealant

Question 4

Calcium hydroxide:

A)cannot be placed under direct composite resins because it will inhibit polymerization.
B)stimulates the production of reparative dentin.
C)functions as a thick base to support extensive restorations.
D)consists of a resin in an organic solvent.

Question 5

Acid etching utilizes etchant containing _____ acid.

A)sulfuric
B)hydrochloric
C)phosphoric
D)citric

Question 6

Protective bases are placed when it is necessary to protect the pulp before the restoration is placed,because without this protection there may be:

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

Question 7

Which of the following is an example of biological pulpal stimuli?

A)Changes from hot and cold coming into contact with the tooth
B)Traumatic occlusion, which occurs when a person's "bite" does not occlude properly
C)Acidic materials reaching pulpal tissues
D)Bacteria from saliva coming into contact with pulpal tissues

Question 8

What step is necessary in preparation for dentin bonding?

A)Application of an etchant
B)Addition of the smear layer
C)Removal of the smear layer
D)Both a and c

Question 9

If decay has extended into or close to the pulp,which material(s) may be indicated?

A)Liner/varnish
B)Base/desensitizer
C)Bonding agent
D)Any or all of the products

Question 10

Materials that are versatile in their uses,such as for specialized dental bases,include:

A)dental cements.
B)dental varnishes.
C)dental liners.
D)calcium hydroxide.

Question 11

Types of pulpal stimuli may be:

A)physical.
B)mechanical.
C)chemical or biologic.
D)all of the above.

Question 12

The smear layer is composed of:

A)particularly dense enamel at the dentino-enamel junction.
B)a very thin layer of debris remaining on the dentin after cavity preparation.
C)an oxygen-inhibited layer on the surface of cut dentin.
D)a very porous layer of cut ends of dentinal tubules.

Question 13

Etchant removes the _____ layer in preparation for bonding.

A)varnish
B)cavity liner
C)smear
D)sclerosing

Question 14

Which of the following would be the material of choice as an insulating base under a composite restoration?

A)Zinc phosphate
B)Zinc oxide eugenol
C)Polycarboxylate
D)Both a and c

Question 15

Dental varnish is used in the cavity preparation to:

A)seal dentinal tubules.
B)reduce leakage around a restoration.
C)stimulate growth of reparative dentin.
D) both a and b.

Question 16

Patients may feel sensitivity _______ after the placement of a restoration.

A)immediately
B)after a month
C)several months
D)sensitivity may develop at any time

Question 17

Insulating base material should cover the entire _______ to a thickness of _____ mm.

A)cavity preparation; 1-2
B)pulpal floor; 1-2
C)cavity preparation; 2-3
D)pulpal floor; 3-4

Question 18

Desensitizers used to help prevent hypersensitivity should be used:

A)in large amounts.
B)in contact with soft tissue.
C)to seal all affected dentinal tubules.
D)all of the above.

Question 19

A dental liner is placed:

A)along inside of 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 of the following would be the material of choice as an insulating base as well as a sedative base?

A)Zinc phosphate
B)Zinc oxide eugenol
C)Polycarboxylate
D)All of the above

Question 21

A _______ appearance assures a tooth has been properly etched.

A)shiny
B)pitted
C)frosted appearance
D)none of the above

Question 22

If a varnish is used,it is always used before other materials.

Question 23

You are asked to select a base for a deep cavity preparation because of extensive decay.Which would you select?

A)Zinc oxide-eugenol
B)Zinc phosphate
C)Polycarboxylate
D)Any of these

Question 24

Thermal changes from hot,cold,or electrical energy created by other metals coming into contact with the tooth are defined as which type of pulpal stimuli?

A)Biological
B)Mechanical
C)Physical
D)Chemical

Question 25

Varnish should be placed on the ______ of the preparation.

A)walls
B)floor
C)margins
D)all of the above

Question 26

Which of the following is not true of the process of removing the smear layer in dentin bonding?

A)During preparation, thousands of dentin tubules are cut.
B)Open ends of dentin tubules lead to sensitivity.
C)All moisture must be removed to assist in adhesion.
D)Completely drying the tooth structure will harm the tooth.

Question 27

Zinc phosphate cement should be mixed:

A)on a cool glass slab.
B)on a warm glass slab.
C)on a paper pad.
D)quickly.

Question 28

ZOE mixed to a base consistency should not be:

A)thick and putty-like.
B)rolled into a one large ball.
C)placed to cover the entire pulpal floor.
D)tapped lightly into the preparation with a condenser.

Question 29

Which is not true in the application of etchant material?

A)The tooth must be free of debris.
B)The tooth must be thoroughly dried.
C)The etchant gel is placed only where needed.
D)It is cured for 15 to 30 seconds.

Question 30

What is true of the bonding process?

A)It can be performed on only the dentin.
B)Contamination will not hinder the bond.
C)Avoid overdrying or desiccating the tooth; the product works best on a slightly moist tooth structure.
D)Using a small amount of bonding material is better than using too much.

Question 31

Varnish should be placed:

A)in one thick layer.
B)in two light coats.
C)before a sedative base.
D)none of the above.

Question 32

Desensitizer should be placed:

A)after thoroughly drying the tooth.
B)on enamel only.
C)and dried immediately.
D)after rinsing and lightly drying.

Question 33

Etching for dental bonding is done with:

A)phosphoric acid.
B)ammonia.
C)isopropyl alcohol.
D)hydrogen peroxide.

Question 34

Dental bonding is also referred to as a:

A)dental adhesion.
B)dental liner.
C)desensitizer.
D)none of the above.

Question 35

Which of the following materials used as a base needs to set at least 5 minutes before placing the restoration?

A)Polycarboxylate cement
B)ZOE
C)Zinc phosphate cement
D)Desensitizing materials

Question 36

Bonding agents or adhesives:

A)can be light-cured.
B)must be used after etching.
C)are available as self-cured.
D)all of the above.

Question 37

You are asked to select a protective base for insulation that is nonirritating under a composite restoration.Which would you select?

A)Zinc oxide-eugenol
B)Zinc phosphate
C)Polycarboxylate
D)Any of these

Question 38

Which is not a use of fluoride varnish?

A)Treatment of hypersensitive cervical areas
B)Dentin sealant
C)Luting agent
D)Topical fluoride application