Dental Materials Foundations And Applications 11th Edition by Powers – Test Bank
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Sample Test
Chapter 03: Preventive Dental Materials
Powers: Dental Materials, 11th Edition
MULTIPLE CHOICE
1. Which
of the following is considered to be a preventive dental material?
|
a. |
Pit and fissure sealant |
|
b. |
Dental amalgam |
|
c. |
Ceramic veneer |
|
d. |
Full gold crown |
ANS: A
|
|
Feedback |
|
A |
Fluoride gels, pit and
fissure sealants, and mouth protectors are considered to be preventive dental
materials. |
|
B |
Dental amalgam is
considered to be a restorative dental material. |
|
C |
Porcelain veneers are
considered to be a restorative dental material. |
|
D |
Full gold crowns are
considered to be a restorative dental material. |
DIF: Knowledge
REF: p.
27
OBJ: 10
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application)
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants
2. Which
type of fluoride treatment is best to use for a patient with dentinal
hypersensitivity (has a neutral pH)?
|
a. |
Acidulated phosphate
fluoride |
|
b. |
Stannous fluoride |
|
c. |
Sodium fluoride |
|
d. |
A and C |
|
e. |
B and C |
ANS: C
|
|
Feedback |
|
A |
Acidulated phosphate does
not have a neutral pH. |
|
B |
Stannous fluorides have
acidic values of pH. |
|
C |
Sodium fluoride has a
neutral pH. |
|
D |
A is an incorrect answer. C
is a correct answer |
|
E |
B is an incorrect answer,
and C is a correct answer. |
DIF: Comprehension
REF: p. 27
OBJ: 3
TOP: CDA, GC, V Patient education and oral
healthcare management; C Demonstrate the understanding of plaque control
techniques, including but not limited to: Explain the effects of all types of
fluoride, the advantages of various methods of administration, and the dangers
and results of overdosage
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.1 Mechanisms of action
3. Which
type of fluoride will not etch restorations?
|
a. |
Acidulated phosphate
fluoride |
|
b. |
Stannous fluoride |
|
c. |
Sodium fluoride |
|
d. |
A and B |
|
e. |
B and C |
ANS: C
|
|
Feedback |
|
A |
Acidulated phosphate
fluorides can etch restorations. |
|
B |
Stannous fluoride can etch restorations. |
|
C |
Sodium fluoride will not
etch restorations. |
|
D |
A and B are incorrect
answers. |
|
E |
B is an incorrect answer,
and C is a correct answer. |
DIF:
Comprehension
REF: p. 28
OBJ: 2
TOP: CDA, GC, V Patient education and oral
healthcare management; C Demonstrate the understanding of plaque control
techniques, including but not limited to: Explain the effects of all types of
fluoride, the advantages of various methods of administration, and the dangers
and results of overdosage
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.1 Mechanisms of action
4. Which
type of fluoride can stain restorations?
|
a. |
Sodium fluoride |
|
b. |
Stannous fluoride |
|
c. |
Acidulated phosphate
fluoride |
|
d. |
A, B, and C |
|
e. |
A and C |
ANS: B
|
|
Feedback |
|
A |
Sodium fluoride does not
stain restorations. |
|
B |
Stannous fluoride can stain
restorations. |
|
C |
Acidulated phosphate
fluoride does not stain restorations. |
|
D |
A is the only correct
choice. |
|
E |
A is the only correct
choice. |
DIF:
Comprehension
REF: p. 28
OBJ: 2
TOP: CDA, GC, V Patient education and oral
healthcare management; C Demonstrate the understanding of plaque control
techniques, including but not limited to: Explain the effects of all types of
fluoride, the advantages of various methods of administration, and the dangers
and results of overdosage
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.1 Mechanisms of action
5. What
does thixotropic mean?
|
a. |
Viscosity of the material
is changeable. |
|
b. |
Material will adhere to an
intraoral surface. |
|
c. |
Grain size of cast gold is
affected by quenching. |
|
d. |
Setting time of the
material is affected by glove powder. |
ANS: A
|
|
Feedback |
|
A |
Thixotropic means the
viscosity of the material is changeable. Examples found in dentistry include
one form of topical dental anesthetic. Yogurt is another example of a
thixotropic material. |
|
B |
The material does not have
adhesive properties. |
|
C |
Quenching is the process of
rapidly cooling cast gold. |
|
D |
There is no chemical or
setting reaction involved. |
DIF: Knowledge
REF: p.
28
OBJ: 1
TOP: CDA, GC, V Patient education and oral
healthcare management; C Demonstrate the understanding of plaque control
techniques, including but not limited to: Explain the effects of all types of
fluoride, the advantages of various methods of administration, and the dangers
and results of overdosage
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.1 Mechanisms of action
6. Fluoride
varnishes are available that contain ________ fluoride.
|
a. |
1% sodium |
|
b. |
5% sodium |
|
c. |
1% stannous |
|
d. |
5% stannous |
|
e. |
2.34% acidulated
phosphate-fluoride (APF) |
ANS: B
|
|
Feedback |
|
A |
1% sodium is related to gel
deliveries of acidulated phosphate fluoride. |
|
B |
Fluoride varnishes are
available that contain 5% sodium fluoride. |
|
C |
Because it stains, 1%
stannous is rarely used. |
|
D |
Because it stains, 5%
stannous is rarely used. |
|
E |
2.34% APF is related to gel
deliveries of acidulated phosphate fluoride. |
DIF: Knowledge
REF: p.
28
OBJ: 1
TOP: CDA, GC, V Patient education and oral
healthcare management; C Demonstrate the understanding of plaque control
techniques, including but not limited to: Explain the effects of all types of
fluoride, the advantages of various methods of administration, and the dangers
and results of overdosage
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.1 Mechanisms of action
7. Which
of the following statements is true about 4-minute versus 1-minute application
of a fluoride treatment? A 4-minute application is
|
a. |
not currently recommended. |
|
b. |
less effective than a
1-minute application. |
|
c. |
equally effective as a
1-minute application. |
|
d. |
more effective than a
1-minute application. |
ANS: D
|
|
Feedback |
|
A |
A 4-minute application is
necessary for full fluoride uptake. |
|
B |
A 4-minute application is
necessary for full fluoride uptake. |
|
C |
A 4-minute application is
necessary for full fluoride uptake. |
|
D |
A 4-minute application
appears to be more effective than a 1-minute application. |
DIF: Knowledge
REF: p.
28
OBJ: 3
TOP: CDA, GC, V Patient education and oral
healthcare management; C Demonstrate the understanding of plaque control
techniques, including but not limited to: Explain the effects of all types of
fluoride, the advantages of various methods of administration, and the dangers
and results of overdosage
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.1 Mechanisms of action
8. Which
of the following statements is true of the manipulation of fluoride foams and
gels during their application for office fluoride treatment?
|
a. |
The troughs of the
maxillary and mandibular trays should be completely filled with the gel. |
|
b. |
The teeth are to be kept as
free from saliva as possible before application of the tray. |
|
c. |
After application of the
gel, the patient is instructed not to eat for 4 hours. |
|
d. |
Rinses are recommended for
children under 6 years old. |
|
e. |
They should be applied
prior to dental prophylaxis. |
ANS: B
|
|
Feedback |
|
A |
A ribbon of gel should be
placed in the troughs of the maxillary and mandibular trays. |
|
B |
The teeth are to be kept as
free from saliva as possible before application of the tray during the application
of office fluoride treatments. |
|
C |
After application of the
gel, the patient is instructed not to eat for 30 minutes. |
|
D |
Rinses are not recommended
for children under 6 years old. |
|
E |
They should be applied
after rather than before dental prophylaxis. |
DIF:
Analysis REF:
p.
28
OBJ: 2
TOP: CDA, GC, V Patient education and oral
healthcare management; C Demonstrate the understanding of plaque control
techniques, including but not limited to: Explain the effects of all types of
fluoride, the advantages of various methods of administration, and the dangers
and results of overdosage.
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.3 Methods of administration
9. Application
of fluoride is least effective in preventing caries on which of the following
surfaces of posterior teeth?
|
a. |
Distal |
|
b. |
Mesial |
|
c. |
Buccal |
|
d. |
Lingual |
|
e. |
Occlusal |
ANS: E
|
|
Feedback |
|
A |
Distal involves smooth
surfaces where fluoride is most effective. |
|
B |
Mesial involves smooth
surfaces where fluoride is most effective. |
|
C |
Buccal involves smooth
surfaces where fluoride is most effective. |
|
D |
Lingual involves smooth
surfaces where fluoride is most effective. |
|
E |
Application of fluoride is
least effective in pits and fissures as a result of the special anatomy of
the occlusal surfaces of posterior teeth. |
DIF: Knowledge
REF: p.
28
OBJ: 3
TOP: CDA, GC, V Patient education and oral
healthcare management; C Demonstrate the understanding of plaque control
techniques, including but not limited to: Explain the effects of all types of
fluoride, the advantages of various methods of administration, and the dangers
and results of overdosage
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.1 Mechanisms of action
10. Which
of the following statements is true about pits and fissures?
|
a. |
A smooth-based depression
on the occlusal surface of a tooth. |
|
b. |
The result of
noncoalescence of dentin during tooth formation. |
|
c. |
The result of
noncoalescence of enamel during tooth formation. |
|
d. |
May be cleansed by the
excursion of food or a toothbrush bristle. |
ANS: C
|
|
Feedback |
|
A |
Pits and fissures are
narrow, deep depressions. |
|
B |
It may extend as far as the
dentoenamel junction. |
|
C |
The pit and fissure is an
enamel fault that is the result of noncoalescence of enamel during tooth
formation. The noncoalescence may extend to the dentoenamel junction, or it
may be incomplete. |
|
D |
Pits and fissures may be
very narrow, smaller than a single toothbrush bristle. |
DIF:
Comprehension
REF: p. 28
OBJ: 6
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.1 Mechanisms of action
11. Approximately
____% of dental caries in children 5 to 17 years of age involves pits.
|
a. |
11 |
|
b. |
24 |
|
c. |
49 |
|
d. |
74 |
|
e. |
84 |
ANS: E
|
|
Feedback |
|
A |
Eleven is a low random distracter. |
|
B |
Twenty-four is a low random
distracter. |
|
C |
Forty-nine is low random
distracter. |
|
D |
Seventy-four is a low
random distracter. |
|
E |
Approximately 84% of dental
caries in children 5 to 17 years of age involve pits. |
DIF: Knowledge
REF: p.
29
OBJ: 6
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.1 Fluoride:
systemic and topical, 5.1.1 Mechanisms of action
12. Pit
and fissure sealants may be used to prevent caries in _____ teeth.
|
a. |
deciduous but not permanent |
|
b. |
permanent but not deciduous |
|
c. |
both deciduous and
permanent |
|
d. |
neither deciduous nor
permanent |
ANS: C
|
|
Feedback |
|
A |
This option is incorrect
based on the answers of both. |
|
B |
This option is incorrect
based on the answers of both. |
|
C |
Pit and fissure sealants
may be used to prevent caries in both deciduous and permanent teeth. |
|
D |
This option is incorrect
based on the answers of both. |
DIF:
Comprehension
REF: p. 29
OBJ: 1
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants, 5.2.1 Mechanisms of action
13. A
preventive resin restoration involves the use of _____ to restore the teeth.
|
a. |
flowable composite |
|
b. |
hybrid ionomer |
|
c. |
glass ionomer |
|
d. |
compomer |
|
e. |
ceramic |
ANS: A
|
|
Feedback |
|
A |
A preventive resin restoration
involves the use of flowable composite to restore the teeth. |
|
B |
Hybrid ionomer is a thick
material with little to no flow |
|
C |
Glass ionomer is a thick
material with little to no flow. |
|
D |
Compomer is a thick
material with little to no flow. |
|
E |
Ceramic is used for
indirect restorations only. |
DIF: Knowledge
REF: p.
29
OBJ: 7
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants.
MSC: NBDHE, 5.0 Using preventive agents, 5.3 Other
preventive agents
14. Which
of the following materials is the chemistry of sealants most similar to?
|
a. |
Composite restorative
material |
|
b. |
Acidulated
phosphate-fluoride |
|
c. |
Ceramic restorative
material |
|
d. |
Glass ionomer cement |
ANS: B
|
|
Feedback |
|
A |
APF is a fluoride. |
|
B |
The chemistry of sealants
is similar to composite restorative material. Sealants have fewer filler
particles and are more fluid in order to penetrate pits and fissures in
addition to the etched areas produced on the enamel. |
|
C |
Ceramic is an indirect
restorative material. |
|
D |
Glass ionomer is a cement
with a fluoride ion. |
DIF: Knowledge
REF: p.
29
OBJ: 7
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants, 5.2.1 Mechanisms of action
15. Sealants
polymerized by visible light are ______-component systems that _____ require
mixing.
|
a. |
one; do |
|
b. |
one; do not |
|
c. |
two; do |
|
d. |
two; do not |
ANS: B
|
|
Feedback |
|
A |
A one-component system does
not require mixing. |
|
B |
Sealants polymerized by
visible light are one-component systems that do not require mixing. |
|
C |
Sealants that self-cure are
two-component systems that do require mixing. |
|
D |
Sealants that self-cure are
two-component systems that do require mixing. |
DIF:
Comprehension
REF: p. 30
OBJ: 6
TOP: CDA, GC, III Chairside Dental Materials (Preparation,
Manipulation, and Application) 2. Describe how to prepare, mix, deliver, and
store other dental materials, including but not limited to e. pit and fissure
sealants.
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants, 5.2.1 Mechanisms of action
16. What
is the purpose of benzoyl peroxide in sealant materials?
|
a. |
Monomer |
|
b. |
Inorganic filler |
|
c. |
Initiator of a
two-component sealant system |
|
d. |
Initiator of a
one-component sealant system |
|
e. |
Organic amine accelerator
of a one-component sealant system |
ANS: C
|
|
Feedback |
|
A |
Monomer is only present in
a one-component system. |
|
B |
Inorganic material is
present in one- and two-component systems. |
|
C |
Benzoyl peroxide is the
initiator of a two-component sealant system. |
|
D |
Diketone is the initiator
in a one-component system. |
|
E |
Organic amine accelerator
is present in one- and two-component systems. |
DIF: Knowledge
REF: p.
30
OBJ: 6
TOP: CDA, GC, III Chairside Dental Materials (Preparation,
Manipulation, and Application) 2. Describe how to prepare, mix, deliver, and
store other dental materials, including but not limited to e. pit and fissure
sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants, 5.2.1 Mechanisms of action
17. How
does acid etching of the enamel surface improve the retention of a sealant?
|
a. |
Decreases the surface area |
|
b. |
Cleans the area to be
sealed |
|
c. |
Improves the wettability of
the enamel |
|
d. |
A, B, and C are all
correct. |
|
e. |
Only B and C are correct. |
ANS: E
|
|
Feedback |
|
A |
Acid etching increases the
surface area. |
|
B |
B and C are correct. |
|
C |
B and C are correct. |
|
D |
Only B and C are correct. |
|
E |
Acid etching of the enamel
surface improves the retention of sealant by cleaning the area to be sealed,
improving the wettability of the enamel, increasing the surface area, and
forming spaces into which the sealant can penetrate to form tags. |
DIF: Comprehension
REF: p. 30
OBJ: 8
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants, 5.2.1 Mechanisms of action
18. What
did the results of a 5-year clinical study about sealant effectiveness, after a
single application of a pit and fissure sealant, indicate?
|
a. |
Increased |
|
b. |
Decreased |
|
c. |
Remained unchanged |
|
d. |
Was tied to oral hygiene |
ANS: B
|
|
Feedback |
|
A |
The clinical study found
the effectiveness of a single application of a sealant clearly decreases with
time. |
|
B |
The clinical study found
the effectiveness of a single application of a sealant clearly decreases with
time. |
|
C |
The clinical study found
the effectiveness of a single application of a sealant clearly decreases with
time. |
|
D |
Caution is warranted in
comparison of some of these studies, because materials, techniques, teeth
studied, and clinical criteria for judging success or failure vary from study
to study. |
DIF:
Comprehension
REF: p. 30
OBJ: 3
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants, 5.2.1 Mechanisms of action
19. Current
evidence indicates that sealants should not be used on the teeth of which type
of patient?
|
a. |
Cooperates in maintaining
good oral hygiene |
|
b. |
Has pits and fissures on
occlusal surfaces |
|
c. |
Has been free of caries for
several years |
|
d. |
Has no proximal lesions |
ANS: C
|
|
Feedback |
|
A |
Sealants also should not be
used on the teeth of a patient who does not cooperate in maintaining good
oral hygiene. |
|
B |
Sealants should be used on
occlusal surfaces where pits and fissures exist. |
|
C |
Current evidence indicates
that sealants should not be used on the teeth of a patient who has been free
of caries for several years. |
|
D |
Sealants should not be used
on teeth with many proximal lesions. |
DIF: Knowledge
REF: p.
30
OBJ: 3
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants, 5.2.1 Mechanisms of action
20. Etchants
are generally _____ acid.
|
a. |
hydrochloric |
|
b. |
phosphoric |
|
c. |
salicylic |
|
d. |
acetic |
ANS: B
|
|
Feedback |
|
A |
Hydrochloric acid is not
used to etch enamel. |
|
B |
Etchants are generally 37%
solutions of phosphoric acid in water. |
|
C |
Salicylic acid is not used
to etch enamel. |
|
D |
Acetic acid is not used to
etch enamel. |
DIF: Knowledge
REF: p. 32
OBJ: 8
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants, 5.2.1 Mechanisms of action
21. Which
of the following statements is true regarding placement of a sealant?
|
a. |
If an etched tooth becomes
contaminated with saliva, the etching and rinsing steps need not be repeated. |
|
b. |
The self-cured sealant is
cured with a light source for at least 20 seconds. |
|
c. |
Moisture enhances retention
of the sealant by the fissure. |
|
d. |
A small cotton pellet may
be used to remove sealant that has failed to polymerize because of exposure
to air. |
|
e. |
If a fluoride treatment is
used in conjunction with the pit and fissure sealant, the fluoride treatment
is applied before the sealant has polymerized. |
ANS: D
|
|
Feedback |
|
A |
The area must be re-etched
and dried again. |
|
B |
Self-cured sealant does not
require a light to cure. |
|
C |
Moisture inhibits retention
of the sealant. |
|
D |
If an etched tooth becomes
contaminated with saliva, the etching and rinsing steps are repeated. |
|
E |
If a fluoride treatment is
used in conjunction with the pit and fissure sealant, the treatment is
applied after the sealant has polymerized. |
DIF:
Analysis REF:
p.
32
OBJ: 8
TOP: CDA, GC, III Chairside Dental Materials
(Preparation, Manipulation, and Application) 2. Describe how to prepare, mix,
deliver, and store other dental materials, including but not limited to e. pit
and fissure sealants
MSC: NBDHE, 5.0 Using preventive agents, 5.2 Pit and
fissure sealants, 5.2.2 Techniques for application
22. Surveys
report that orofacial injuries most frequently occur in which sport when the
athlete is not wearing a mouth protector?
|
a. |
Basketball |
|
b. |
Football |
|
c. |
Hockey |
|
d. |
Skiing |
|
e. |
Golf |
ANS: A
|
|
Feedback |
|
A |
Orofacial injuries most commonly
occur in basketball, baseball, and soccer. Most injuries occur when the
athlete does not wear a mouth protector. The Centers for Disease Control and
Prevention (CDC) recommends that all players of contact sports use mouth
protectors. |
|
B |
The CDC found that football
players do not sustain as many orofacial injuries as other athletes do
because of required faceguards and mouth protectors. Most junior colleges and
many amateur hockey and football leagues have adopted the rule mandated by
the National Football Alliance Rules Committee that all high school athletes
be equipped with internal mouth protectors. |
|
C |
The CDC found that hockey
players do not sustain as many orofacial injuries as other athletes do
because of required faceguards and mouth protectors. Most junior colleges and
many amateur hockey and football leagues have adopted the rule mandated by
the National Football Alliance Rules Committee that all high school athletes
be equipped with internal mouth protectors. |
|
D |
Skiers do not sustain as
many orofacial injuries as other athletes. |
|
E |
Golfers do not sustain as
many orofacial injuries as other athletes. |
DIF: Knowledge
REF: p.
33
OBJ: 14
TOP: CDA, GC, IV Laboratory materials and
procedures, B Demonstrate an understanding of laboratory procedures, including
but not limited to 2. fabricate custom occlusal appliances and bleaching
trays MSC: NBDHE, 5.0
Using preventive agents, 5.3 Other preventive agents
23. Which
statement(s) is/are true of custom-made mouth protectors?
|
a. |
Athletes prefer the
custom-made mouth protector over mouth-formed and stock mouth protectors. |
|
b. |
Custom-made mouth
protectors are less expensive than mouth-formed or stock mouth protectors. |
|
c. |
Custom-made mouth
protectors are less likely to interfere with speech than mouth-formed or
stock mouth protectors. |
|
d. |
A and B are correct. |
|
e. |
A and C are correct. |
ANS: D
|
|
Feedback |
|
A |
A and C are correct. |
|
B |
Mouth protectors are more
expensive than mouth-formed or stock mouth protectors. |
|
C |
A and C are correct. |
|
D |
A and C are correct. |
|
E |
Athletes prefer the
custom-made mouth protector over mouth-formed and stock mouth protectors;
custom-made mouth protectors are more expensive than mouth-formed or stock
mouth protectors; and custom-made mouth protectors are less likely to
interfere with speech than mouth-formed or stock mouth protectors. |
DIF:
Comprehension
REF: p. 33
OBJ: 17
TOP: CDA, GC, IV Laboratory materials and procedures,
B Demonstrate an understanding of laboratory procedures, including but not
limited to 2. fabricate custom occlusal appliances and bleaching
trays MSC: NBDHE, 5.0
Using preventive agents, 5.3 Other preventive agents
24. A
mouth protector thickness of _____ mm of material over incisal edges and cusps
of teeth is recommended for best protection and acceptable comfort.
|
a. |
0.5 |
|
b. |
1.0 |
|
c. |
2.0 |
|
d. |
4.0 |
|
e. |
8.0 |
ANS: D
|
|
Feedback |
|
A |
This answer provides
insufficient thickness. |
|
B |
This answer provides
insufficient thickness. |
|
C |
This answer provides
insufficient thickness. |
|
D |
A thickness of 4 mm of
material over incisal edges and cusps of teeth is recommended for best
protection and acceptable comfort. |
|
E |
This answer provides
excessive thickness. |
DIF: Application
REF: p.
35
OBJ: 18
TOP: CDA, GC, IV Laboratory materials and
procedures, B Demonstrate an understanding of laboratory procedures, including
but not limited to 2. fabricate custom occlusal appliances and bleaching
trays MSC: NBDHE, 5.0
Using preventive agents, 5.3 Other preventive agents
25. Which
of the following represents the correct sequential order for manipulation of
pit and fissure sealants that require etching with phosphoric acid?
1. Cleansing
and etching the occlusal surfaces
2. Drying
the occlusal surfaces
3. Washing
the occlusal surfaces
4. Finishing
the occlusal surfaces
5. Polymerizing
6. Applying
sealant to the pits and fissures
|
a. |
2, 1, 3, 4, 6, 5 |
|
b. |
1, 2, 4, 3, 5, 6 |
|
c. |
1, 3, 2, 6, 4, 5 |
|
d. |
1, 3, 2, 6, 5, 4 |
|
e. |
3, 1, 2, 6, 4, 5 |
ANS: D
|
|
Feedback |
|
A |
The correct order of
sequential steps is cleansing and etching the occlusal surfaces, washing the
occlusal surfaces, drying the occlusal surfaces, applying sealant to the pits
and fissures, polymerizing, and finishing. |
|
B |
The correct order of
sequential steps is cleansing and etching the occlusal surfaces, washing the
occlusal surfaces, drying the occlusal surfaces, applying sealant to the pits
and fissures, polymerizing, and finishing. |
|
C |
The correct order of
sequential steps is cleansing and etching the occlusal surfaces, washing the
occlusal surfaces, drying the occlusal surfaces, applying sealant to the pits
and fissures, polymerizing, and finishing. |
|
D |
The correct order of sequential
steps is cleansing and etching the occlusal surfaces, washing the occlusal
surfaces, drying the occlusal surfaces, applying sealant to the pits and
fissures, polymerizing, and finishing. |
|
E |
The correct order of
sequential steps is cleansing and etching the occlusal surfaces, washing the
occlusal surfaces, drying the occlusal surfaces, applying sealant to the pits
and fissures, polymerizing, and finishing. |
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