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Preventative Test 1 Review Flashcards | StudBud
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Preventative Test 1 Review
Preventative Test 1 Review
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Questions
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Answers
1
Non-acidulated fluoride gel remains safe for use on all restorations.
False
True
2
After eruption, fluoride exposure results in deposition of high levels of fluoride in the outermost layers of enamel.
False
True
3
Enamel is porous.
False
True
4
The clinical description most characteristic of an active root caries lesion rather than an arrested root caries lesion:
with a hard consistency.
with a smooth surface.
dark brown in color.
with a soft consistency.
5
Newly-erupted teeth are more susceptible to decay than other teeth due to low salivary flow in children.
False
True
6
Health promotion: "Unrealistic combo of education, political, regulatory, & organization supports for general health."
False
True
7
Saliva provides buffering capacity.
True
False
8
A filling is an example of ________ prevention.
Secondary
Tertiary
Health
Primary
9
The most common cause of death in acute fluoride poisoning is
Cardiac arrest
Renal failure
Liver failure
Dehydration
10
What is the approximate concentration of fluoride in parts per million of 1.23% APF fluoride gel?
800 ppm
12,300 ppm
9,050 ppm
226 ppm
11
The main mineral in tooth enamel is hydroxyl phosphate.
False
True
12
Saliva provides antimicrobial capacity.
False
True
13
Individuals greatest fluoride benefit is derived from water fluoridation prior to tooth eruption.
True
False
14
Dental health education may occur at all levels of prevention. It is usually classified at which level of prevention?
Disease Prevention
Secondary
Tertiary
Primary
15
Primary bacteria that cause decay become established in the mouth of infants
through drinking water.
established in utero while the baby is still in the womb.
through household aerosols.
through transmission from the mouth of the mother/caregiver.
16
Secondary prevention MOST accurate definition:
all of the above.
health promotion and specific deasease protection.
early detection and treatment.
disability limitation and rehabilitation.
17
A denture is an example of _______ preventative.
health
secondary
tertiary
primary
18
The following type(s) of fluoride(s) is/are used to fluoridate community water systems:
Sodium Fluoride
Sodium Fluorosilicate
all of the above
Fluorosilicic acid
19
The approximate concentration of fluoride in most dentifrices is
1,000 ppm
12,300 ppm
500 ppm
750 ppm
20
What is the approximate concentration of fluoride in a low potency 0.05% NaF rinse?
225 ppm
1,000 ppm
5,000 ppm
400 ppm
21
The primary cause of newly-erupted teeth to be more susceptible to decay is due to insufficient fluoride exposure.
False
True
22
.12% chlorhexidine has the ability to attack which of the following bacteria associated with the dental caries process?
Mutans streptocci
Lactobacillus miniatus
Prevetolla intermedia
Periodontal pathogens
23
Saliva provides a growth medium for bacteria.
True
False
24
Which term describes the ability of S. Mutans to thrive in and tolerate an acidic environment?
Aciduric
Acidogenic
Acidophobic
Acidosic
25
Which of the following best explains the underuse of sealants?
Perceived low retention rates of sealants
Amalgams are more economical
Fear of decay being buried under the sealant
Cost effectiveness of the procedure
26
Replacement of the phosphate ion by carbonate ion increases enamel's strength.
False
True
27
Enamel maturation is delayed due to children not yet building up their immunity to S. Mutans.
False
True
28
The critical pH at which enamel begins to demineralize is?
6.5
3.5
4.5
5.5
29
How does the fluoride ion affect crystal size and solubility of the hydroxyapatite crystal?
Crystal size decreases and solubility decreases
Crystal size dectreases and solubility increases
Crystal size increases and solubility decreases
Crystal size increases and solubility increases
30
When ingested, fluoride absorption takes place mainly in the
stomach
oral mucosa
large intestine
small intestine
31
Non-acidulated fluoride gel contains a pH of 3.0-4.0.
True
False
32
The primary means for reducing acid production by bacteria:
Reducing the intake of refined carbohydrates (sugars)
Frequent exposure to antimicrobial rinses
Increasing the buffering capacity of fluoride
Increasing ones exposure to fluoride
33
2% NaF gel is an example of a low-potency, high frequency fluoride.
True
False
34
A patient reports hot/cold/sweet sensitivity that lingers for over an hour. You suspect:
pulp necrosis
root caries
reversible pulpitis
irreversible pulpitis
35
Which of the following is/are characteristic(s) of xylitol gum?
Stimulates saliva flow to help strengthen teeth.
Promotes neutral pH
Reduces the risk of dental caries
Sweetness stimulates salivary flow - neutralizes.
36
Newly-erupted teeth are more susceptible to decay because the enamel is not fully mineralized and less acid-resistant.
False
True
37
Studies have shown fluoride's predominant effect is primarily post eruptive in nature.
True
False
38
These two types of bacteria remain closely associated with dental caries.
Mutans streptococcus
Lactobacillus
Actinobacillus
Streptococcus sanguis
39
Community water fluoridation is an example of what level of prevention?
Disease Prevention
Secondary
Tertiary
Primary
40
Concerning fluoride toxicity, the risk category in which induced vomiting is NOT necessary is:
Induced vomiting is always necessary
Moderate risk
Low risk
High risk
41
This type of fluoride treatment has 19,300 ppm, must be mixed immediately prior to application, and a short shelf life:
sodium fluoride.
non-acidulated phosphate fluoride.
stannous fluoride.
acidulated phosphate fluoride.
42
Streptococcus Mutans is present in increased numbers at incipient lesion sites in the early stages of demineralization.
True
False
43
Non-acidulated fluoride gel provides the same uptake as APF.
True
False
44
The caries process is a multifactorial disease consisting of 4 components:
dietary fructose, susceptible host, cariogenic bacteria
dietary fructose, susceptible host, plaque
dietary sucrose, susceptible host, cariogenic bacteria, time
dietary sucrose, susceptible host, plaque
45
Which of the following factors is the most important in remineralization?
Carbonate
Fluoride
Excellent Oral Hygiene
Saliva
46
Which mechanism of fluoride action protects the tooth from dental caries?
Renders the enamel resistant to acid dissolution
All of the above
Interferes with bacteria
Supports remineralization
47
Frequent low-potency fluorides are important for enamel remineralization.
False
True
48
Which mechanism of fluoride action protects the tooth from dental caries?
All of the above
Encourages bacterial colonization, growth, metabolism and multiplication
Undermines remineralization
Renders the enamel resistant to acid dissolution
49
Health may be defined as which of the following
Change and cope with an ever-changing environment
Realize aspirations and satisfy needs
Physical, social, and mental
A, B, and C
50
When demineralization occurs more often than remineralization, dental caries occurs.
True
False
51
Demineralization results in the greatest loss of __ and __ minerals in the __ zone, resulting in the white spot lesion.
calcium; phosphate; enamel
phosphate, calcium; subsurface
fluoride; phosphate; subsurface
fluoride; calcium; enamel
52
Enamel contains carbonated hydroxy-apatite crystals arranged in rods or prisms.
True
False
53
Enamel is protected initially from the acid of pathogenic bacteria by which of the following components?
Interprismatic layer
Saliva
Pellicle
Plaque
54
Which patient would you not recommend fluoride?
Head and neck radiation patient
4 year old experiencing multiple carious lesions
Adult patient with rampant decay
Patient with Sjogren's Syndrome
55
The primary means for reducing acid production by bacteria is
increasing the buffering capacity of fluoride.
reducing the intake of refined carbohydrates (sugars).
frequent exposure to antimicrobial rinses.
increasing one's fluoride exposure.
56
Two minerals dissociated from enamel and redeposited during the demineralization/remineralization cycle:
iron
fluoride
phosphate
calcium
57
Lactobacilli are usually found even earlier than S. Mutans at the incipient lesion site.
True
False
58
Remineralization and demineralization is an ongoing process.
True
False
59
0.12% chlorhexidine gluconate can be inactivated by which of the following dentifrice ingredients?
Sodium fluoride
Sorbitol
Sodium monofluorophosphate
Sodium lauryl sulfate
60
Non-acidulated fluoride gel has ACP (Amorphous Calcium Phosphate).
False
True
61
According the the CDC, what percentage of US citizens are served by optimally fluoridated public water supplies?
74%
12%
87%
34%
62
In the presence of fluoride, the hydroxyl groups can be substituted with fluoride, creating fluorophosphates.
False
True
63
An exam is an example of _______ prevention.
Health
Tertiary
Primary
Secondary
64
Enamel is the most mineralized structure in the human body.
False
True
65
Saliva aids in remineralization of the tooth.
True
False