Deck 59: Dental Sealants

Question 1

Which is true regarding a properly placed sealant over small initial carious lesions?

A)The decay will continue to develop under the sealant.
B)Bacteria can survive under a sealant.
C)The number of bacteria in small carious lesions decreases over time.
D)The number of bacteria in small carious lesions increases over time.

Answer 1

The number of bacteria in small carious lesions decreases over time.

Question 2

Enamel that has been etched has the appearance of being:

A)shiny.
B)frosty.
C)wet.
D)slightly yellow.

Answer 2

frosty.

Question 3

The primary reason why very few children are protected by dental sealants is:

A)they are not recommended by the American Dental Association.
B)they have not been shown to significantly reduce decay.
C)lack of public awareness.
D)they are not effective for prevention of pit and fissure decay in posterior teeth.

Answer 3

lack of public awareness.

Question 4

Self-cured sealant materials are supplied as a two-part system that includes:

A)a base.
B)a catalyst.
C)filled resins.
D)both a and b.

Question 5

The highest risk period for decay occurs within the first ___ years of eruption.

A)3
B)5
C)7
D)9

Question 6

Which teeth would be the most likely candidates for sealants?

A)Premolars
B)Teeth that are well coalesced
C)Teeth that have been erupted for six years
D)Primary molars with deep pits and fissures

Question 7

Clinical researchers have shown that sealing the margins of amalgam and composite restorations with unfilled resins will do which of the following?
1)Promote microleakage.
2)Arrest the progression of caries.
3)Preserve existing restorations .
4)Preserve tooth structure.

A)1, 2, 3, 4
B)2, 3, 4
C)3, 4
D)4 only

Question 8

Sealants are indicated for:

A)children but not adults.
B)posterior but not anterior teeth.
C)the smooth surfaces of teeth but not pits and fissures.
D)pits and fissures.

Question 9

Sealant material should not be stored in proximity to ____-containing products.

A)acrylate
B)eugenol
C)sodium bicarbonate
D)Bis-GMA

Question 10

If you use an air polishing device that used sodium bicarbonate for cleaning enamel prior to sealant placement,the etching step should be repeated for a second time,or _____ should be applied to the surface for 10 seconds to neutralize the sodium bicarbonate and then thoroughly rinsed off with water prior to applying the etch.

A)surgical soap
B)chlorhexidine
C)3% hydrogen peroxide
D)sodium hypochlorite

Question 11

The first step in placing dental sealants is to _____ the surface.

A)etch
B)isolate
C)clean
D)prime

Question 12

The single most important factor in the success of a sealant is:

A)the type of material used.
B)that it be properly placed.
C)that the patient be recalled.
D)that the child continues to brush.

Question 13

Properly placed dental sealants are ___% effective in protecting development of cavities in sealed tooth surfaces.

A)70
B)80
C)90
D)100

Question 14

Utilization of sealants is only about ____% in low-income children.

A)50
B)75
C)15
D)30

Question 15

The retention of the sealant is obtained by etching the enamel with _____,to roughen it and open the pores in enamel for penetration of the resin sealant.

A)citric acid
B)phosphoric acid
C)eugenol
D)pumice

Question 16

A sealant that is polymerized by chemical reactions is called:

A)acrylate.
B)filled resin.
C)self-cured.
D)unfilled resin.

Question 17

Which is not a reason that pits and fissures are more susceptible to decay than smooth surfaces?

A)They do not benefit from the effects of fluoride.
B)The enamel at the base of fissures is thinner.
C)Saliva cannot clean deep pits and fissures.
D)All are reasons pits and fissures are susceptible.

Question 18

The most common cause of sealant loss is:

A)use of unfilled material.
B)use of outdated material.
C)moisture contamination during placement.
D)bruxism.

Question 19

Which is an indication for sealants?

A)Presence of small interproximal decay
B)A partially erupted tooth
C)Adjacent teeth with occlusal decay
D)Patient has adequate fluoride program

Question 20

Contraindications to sealant placement include proximal decay,because:

A)proximal decay will spread to the occlusal surface.
B)posterior proximal tooth preparation will usually include the occlusal pits and fissures.
C)sealants are placed on smooth surfaces and the proximal area is a smooth surface.
D)sealants are placed on smooth surfaces and the proximal area is a rough surface.

Question 21

The technique error most commonly leading to failure is:

A)moisture.
B)fail to cure properly.
C)not using enough material.
D)all of the above.

Question 22

An advantage of a tinted sealant material over clear or colorless material is that it:

A)is easier to see during application.
B)aids in recall checks for sealant retention.
C)is stronger.
D)both a and b.

Question 23

Which of the following indicates a sealant may have to be replaced or adjusted?

A)The explore catches.
B)Floss does not easily pass through contact.
C)The shine is not even.
D)All of the above are indications.

Question 24

_____ can be used in interproximal spaces to prevent the etchant from contacting adjacent teeth during the etching procedure.

A)Dental floss
B)Wedges
C)Mylar strips
D)Any of the above

Question 25

What is the claimed benefit of fluoride-released sealant materials?

A)They are of no value.
B)They create a fluoride-rich layer that may make pits and fissures more resistant to decay.
C)They aid in rematerializing incipient decay.
D)Both b and c are benefits.

Question 26

_______ is sometimes used before sealant application to open fissures and remove slight decay.

A)Rubber cup polishing
B)Bristle-brush polishing
C)Microabrasion
D)Scaling

Question 27

Dental sealants replace other preventive care.

Question 28

Filled sealant resins,as compared with unfilled:

A)require occlusal adjustment.
B)have a lower wear rate.
C)may be visible on x-rays.
D)all of the above.