Deck 7: Preventive and Desensitizing Materials

Question 1

Where is fluoride's greatest anticaries benefit gained?

A) Topical fluoride exposure before eruption
B) Systemic fluoride exposure before eruption
C) Topical fluoride exposure after the teeth have erupted
D) Systemic fluoride exposure after the teeth have erupted

Answer 1

Topical fluoride exposure after the teeth have erupted

Question 2

Where is resin infiltration most successfully used?

A) In pits and fissures
B) In early cavitation
C) On interproximal surfaces
D) On smooth surface white spots

Answer 2

On smooth surface white spots

Question 3

At what pH will tooth demineralization occur?

A) 3.5
B) 4.5
C) 5.5
D) 6.5

Answer 3

5.5

Question 4

Which of the following are the teeth from which sealants are most frequently lost?

A) First premolars
B) Second premolars
C) First molars
D) Second molars

Question 5

What is the wet,uncured surface of a cured composite resin called?

A) Biofilm
B) Hybrid layer
C) Surface layer
D) Oxygen-inhibited layer

Question 6

The accepted optimal level of fluoride in the drinking water is in the range of ____ mg/L or parts per million.

A) 0.01 to 0.07
B) 0.07 to 0.12
C) 0.12 to 0.7
D) 0.7 to 1.2

Question 7

Which of the following is the most commonly noted side effect of the use of chlorhexidine gluconate as an antibacterial mouth rinse?

A) Leukoplakia
B) Brown stain
C) Geographic tongue
D) Median rhomboid glossitis

Question 8

In conjunction with fluoride,which product would aid in tooth remineralization?

A) Phenolic compounds
B) Chlorhexidine
C) Essential oils
D) Antibiotics

Question 9

Which of the following causes of tooth sensitivity may be successfully treated with a desensitizing agent?

A) Dental caries
B) A cracked tooth
C) A leaking restoration
D) Exposed dentinal tubules

Question 10

Which of the following is the worst type of sealant failure?

A) All of the sealant is lost.
B) Part of the sealant is lost.
C) The sealant remains in place but leaks.
D) Too much sealant is placed,resulting in excess material in the contact between adjacent teeth.

Question 11

Which of the following is true of the oxygen-inhibited layer on cured dental sealant?

A) It is the most thoroughly cured portion because it is closest to the curing light.
B) It occurs because the set of the resin at its surface is inhibited by contact with oxygen in the air.
C) It contains bisphenol,an estrogen-like chemical associated with precocious puberty.
D) It allows the clinician to see and detect the presence of the sealant.

Question 12

Which of the following desensitizing agents is thought to work by passing through the dentinal tubules to the pulp and acting directly on the nerve?

A) Fluoride compounds in toothpastes,gels,or solutions
B) Ferric or potassium oxalate solutions
C) Chemical solutions containing resin
D) Potassium citrate

Question 13

Which of the following is true concerning in-office fluoride application?

A) A 1-minute application is recommended by the ADA.
B) The most commonly used fluorides come in the form of topical gels or foams that are applied for 1 minute in disposable trays.
C) The 1-minute application delivers approximately 25% of the fluoride that a 4-minute application delivers.
D) When used one to two times a year,topical fluoride treatments have been shown to produce 20% to 26% caries reduction.

Question 14

What is the proper order for the steps of applying sealant?

A) Etch,clean,cure,seal
B) Clean,etch,seal,cure
C) Etch,seal,cure,clean
D) Clean,seal,cure,etch

Question 15

Which of the following would not require a desensitizer for tooth sensitivity?

A) Root abrasion
B) Leaking margin
C) Erosion from acid
D) Cervical abfraction

Question 16

Which of the following types of adult teeth are most susceptible to fissure caries?

A) Upper lateral incisors and upper first premolars
B) Upper and lower second premolars
C) Lower molars
D) Upper molars

Question 17

Which of the following are true concerning fluoride and bacterial inhibition?
1)The fluoride ion freely crosses the bacterial cell wall.
2)Some of the fluoride present in plaque fluid combines with the hydrogen ion of the acid to become hydrofluoric acid.
3)Hydrofluoric acid diffuses into the cell.
4)Once in the acid cytoplasm of the cell,the hydrofluoric acid separates into the fluoride ion and the hydrogen ion.

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

Question 18

What will occur if carious teeth are treated with sealants?

A) An acceleration of decay
B) Complete reversal and elimination of all traces of decay
C) An 11% reversal from a caries-active to a caries-inactive state
D) An 89% reversal from a caries-active to a caries-inactive state

Question 19

Which permanent teeth are most susceptible to caries?

A) Upper and lower first premolars
B) Upper and lower second premolars
C) Maxillary molars
D) Mandibular molars

Question 20

At which level,parts per million (ppm),of excess systemic fluoride will fluorosis begin to affect developing teeth?

A) 1.5 ppm
B) 2.0 ppm
C) 2.5 ppm
D) 3.0 ppm

Question 21

What should be done if a child has consumed an excessive amount of fluoride?

Question 22

Which of the following would not be a cause of tooth sensitivity?

A) Exposed dentinal tubules
B) Extremes of hot and cold
C) Craze lines in enamel
D) Acidic foods

Question 23

Match the items with the correct description below.
Acid tends to etch the surface of resin,glass ionomer,or compomer when used for in-office fluoride application

A)Acidulated phosphate fluoride (APF)
B)Neutral sodium fluoride (NaF)
C)1.1% Neutral sodium fluoride 5000 ppm restorations made of porcelain,composite fluoride
D)0.4% Stannous fluoride 900 ppm fluoride
E)Fluoride varnish 5.0% sodium fluoride than the other choice of self-applied topical gel

Question 24

Match the items with the correct description below.
In-office fluoride application directly to the teeth

A)Acidulated phosphate fluoride (APF)
B)Neutral sodium fluoride (NaF)
C)1.1% Neutral sodium fluoride 5000 ppm restorations made of porcelain,composite fluoride
D)0.4% Stannous fluoride 900 ppm fluoride
E)Fluoride varnish 5.0% sodium fluoride than the other choice of self-applied topical gel

Question 25

Which information regarding the sealant procedure does not need to be documented in the patient's chart?

A) Etch time
B) Type of material
C) Type of isolation
D) Tooth number and surface

Question 26

The use of a bonding agent with pit and fissure sealants _____ their longevity.

A) decreases
B) increases
C) has no effect on

Question 27

What is the oxygen-inhibited layer on cured dental sealant?

Question 28

In addition to patients with higher than normal caries rates,patients with which of the following conditions benefit most from self-applied topical fluoride gels?

A) Erupting molars
B) Tooth sensitivity
C) Gingival hyperplasia
D) Orthodontic appliances

Question 29

Which of the following is not an indication for pit and fissure sealants?

A) Deep,sticky pits
B) Coalesced grooves
C) Uncoalesced grooves
D) Discoloration of pits

Question 30

How many minutes of working time does one have when using chemical cure sealants?

A) 1
B) 1.5
C) 2
D) 2.5

Question 31

Match the items with the correct description below.
Most often used with adults for in-office fluoride applications using a tray 12,300 ppm fluoride

A)Acidulated phosphate fluoride (APF)
B)Neutral sodium fluoride (NaF)
C)1.1% Neutral sodium fluoride 5000 ppm restorations made of porcelain,composite fluoride
D)0.4% Stannous fluoride 900 ppm fluoride
E)Fluoride varnish 5.0% sodium fluoride than the other choice of self-applied topical gel

Question 32

Match the items with the correct description below.
Self-applied topical gel that may cause some staining of the surfaces of the teeth and that delivers less fluoride ion to the teeth

A)Acidulated phosphate fluoride (APF)
B)Neutral sodium fluoride (NaF)
C)1.1% Neutral sodium fluoride 5000 ppm restorations made of porcelain,composite fluoride
D)0.4% Stannous fluoride 900 ppm fluoride
E)Fluoride varnish 5.0% sodium fluoride than the other choice of self-applied topical gel

Question 33

Which factor would contraindicate dental sealants?

A) Deep,uncoalesced grooves
B) Shallow,well-coalesced grooves
C) Adult patients with high caries risk

Question 34

When could fluorosis occur?

A) When children swallow toothpaste
B) When breast-fed babies are not supplemented
C) When there is not enough fluoride in the water

Question 35

Which of the following would not be considered a topical fluoride application?

A) Daily mouth rinse
B) Vitamin with fluoride
C) Fluoridated toothpaste
D) 6-month in-office application

Question 36

What is the purpose of adding fillers to pit and fissure sealant material?

A) Wear resistance
B) Increased bond
C) Esthetics
D) Strength

Question 37

Which of the following would be a likely cause of sealant failure?

A) Plaque deep in the grooves
B) Rubber dam application
C) Moisture on the tooth
D) Demineralization

Question 38

Match the items with the correct description below.
Used more often with children for in-office fluoride applications using a tray 9000 ppm fluoride

A)Acidulated phosphate fluoride (APF)
B)Neutral sodium fluoride (NaF)
C)1.1% Neutral sodium fluoride 5000 ppm restorations made of porcelain,composite fluoride
D)0.4% Stannous fluoride 900 ppm fluoride
E)Fluoride varnish 5.0% sodium fluoride than the other choice of self-applied topical gel