Deck 7: Preventive and Bleaching Materials

Question 1

Fluorosis can occur when:

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

Answer 1

children swallow toothpaste

Question 2

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

Answer 2

Lower molars

Question 3

A sports guard thickness of about __ mm is desirable for heavy contact sports in which injuries are more likely.

A) 1
B) 2
C) 4
D) 8

Answer 3

4

Question 4

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 bis-phenol, an estrogen-like chemical associated with precocious puberty.
D) It allows the clinician to see and detect the presence of the sealant.

Question 5

Which of the following statements is true regarding types of tooth stains?

A) Intrinsic stains are on the tooth surface.
B) All extrinsic stains can be removed by hand or ultrasonic scaling and coronal polishing.
C) In general, yellow-brown discolorations are easier to bleach than blue-gray and black colors.
D) Tetracycline derivatives such as minocycline will cause discoloration of teeth in children but not in adults.

Question 6

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

A) Dental caries
B) Abfraction
C) A cracked tooth
D) A leaking restoration

Question 7

Hard acrylic guards are usually fabricated in the dental ___________ and usually require ________ time to adjust than guards made from soft thermoplastic sheets.

A) office; more
B) office; less
C) laboratory; more
D) laboratory; less

Question 8

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 9

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) Median rhomboid glossitis
D) Geographic tongue

Question 10

Which of the following is true regarding sports guard protection?

A) They can absorb 100% of the energy from a traumatic hit to the mouth.
B) They usually cover the mandibular teeth, gingiva, and bone.
C) They can cushion the maxillary and mandibular teeth when an athlete's jaws are forced together by a blow to the lower jaw.
D) They cannot prevent lacerations to the lips for athletes with orthodontic braces or brackets.

Question 11

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 12

Which of the following is the worst 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 13

Treatment of carious teeth with sealants resulted in:

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

Question 14

Leaking restorations should be replaced before the bleaching process is started, to:

A) assure a correct shade match
B) be certain that restorative needs are treated before esthetic needs
C) prevent excessive penetration of bleach through dentinal tubules that might irritate the pulp and cause sensitivity
D) prevent a line of black stain around the restorations

Question 15

Which of the following statements is true regarding home bleaching prescribed by the dentist?

A) The material consists of clear, flexible strips containing a peroxide gel that are adapted over the teeth and worn for 30 minutes at a time once or twice a day.
B) Only the anterior six teeth are covered.
C) The gel is placed in a custom-formed soft, thin plastic tray and is worn by the patient for periods as short as 30 minutes twice daily or as long as overnight.
D) The home bleaching process is less effective than the in-office process.

Question 16

Which of the following statements is true regarding teeth bleaching?

A) All teeth bleaching products contain peroxide.
B) Teeth bleaching occurs when the bleaching material passes through the spaces in enamel and oxidizes the stains.
C) Acid etching before the application of the bleach chemical may enhance penetration of the bleach.
D) Acid etching will polish the surface of the enamel.

Question 17

Fluoride's greatest anti-caries benefit is gained from:

A) systemic fluoride exposure before eruption
B) systemic fluoride exposure after the teeth have erupted
C) topical fluoride exposure before eruption
D) topical fluoride exposure after the teeth have erupted

Question 18

Sodium peroxyborate monohydrate (Amosan) is utilized with __________ bleaching.

A) vital external
B) vital internal
C) devital external
D) devital internal

Question 19

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

A) The most commonly used fluorides come in the form of topical gels or foams that are applied for 1 minute in disposable trays.
B) A 1-minute application is recommended by the ADA.
C) The 1-minute application delivers approximately 25% of the fluoride that a 4-minute application delivers.
D) When used 1 to 2 times a year, topical fluoride treatments have been shown to produce 20% to 26% caries reduction.

Question 20

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 nitrate

Question 21

The use of a bonding agent with pit and fissure sealants _______ its longevity.

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

Question 22

Proper care of a mouth guard would include which of the following?

A) Rinsing with warm water
B) Brushing with toothpaste
C) Storing in mouthwash
D) Air drying in a rigid container

Question 23

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 24

Stains with the best chance of removal when a bleaching product is used would include:

A) food
B) antibiotics
C) iron
D) coffee

Question 25

Bleaching materials often contain ________ to help cut down on tooth sensitivity.

A) potassium citrate
B) fluoride
C) eugenol
D) calcium hydroxide

Question 26

Contraindications for dental sealants would include:

A) shallow, well-coalesced grooves
B) deep, uncoalesced grooves
C) adult patients with high caries risk

Question 27

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

Question 28

Stains most effectively removed by bleaching of vital teeth are the:

A) black stains
B) blue-gray stains
C) yellow-brown stains
D) green stains

Question 29

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

Question 30

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

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

Question 31

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

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

Question 32

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 33

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 34

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

Question 35

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 36

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 37

Which of the following is/are a potential side effect(s) of bleaching?

A) Tooth sensitivity
B) Gum irritation
C) Condyle pain
D) All of the above