問題一覧
1
A pale yellow lesion with a red halo located inside the oral cavity along the lip or buccal mucosa is known as a
Aphthous Ulcer
2
A white patch in the mouth which may appear before a malignant lesion is called
Leukoplakia
3
What type of calculus is found on the clinical crowns of the teeth, above the margin of the gingiva?
Supragingival
4
What is a soft mass of bacterial deposits that cover tooth surfaces?
Supragingival
5
The dental complications of oral piercings, include chipped and broken teeth and serious infections.
true
6
Bulimia or self-induced vomiting after eating, may cause on the lingual surface of the teeth.
Erosion
7
What type of Periodontitis occurs before the age of 35 and is associated with rapid rate of tissue destruction?
Aggressive Periodontitis
8
Smokers have a lower chance of loss of attachment, bone loss, periodontal pocket depths, calculus formation, and tooth loss.
False
9
What is a yeastlike fungus which causes a superficial infection in the oral cavity?
Candidiasis
10
Gingivitis may be easily reversed if the patient
Improves oral hygiene and controls plaque by flossing and brushing frequently, and has a regular prophylaxis
11
The abbreviation M O D in tooth charting refers to which surfaces?
Mesial, Occlusal, Distal
12
The surface of the tooth farthest from the midline is called:
Distal
13
A cavity found in the pits and fissures of teeth is classified as:
Class I
14
What is performed during the clinical examinition of a patient?
All the above
15
A patient's medical history should be reviewed by the assistant:
At every appointment
16
When charting primary teeth with the universal numbering system, the maxillary right central would be written like this:
E
17
The act of touching or feeling with the fingers or hands is:
Palpation
18
Probing is done to detect which type of disease?
Periodontal disease
19
A Class II cavity occurs:
on the proximal or in-between surfaces of posterior teeth and will nearly always involve the occlusal surface when restoring due to lack of access.
20
What part of the soft tissue exam requires you to use a 2×2 gauze?
Checking the tongue for evidence of cancer
21
During the coronal polish procedure, the amount of pressure applied to the polishing cup influences the rate of abrasion.
True
22
The clinical crown is the portion of the tooth which is:
Visible in the oral cavity
23
Calculus is removed with:
Scalers
24
Extrinsic stains are found inside the tooth surface.
False
25
Intrinsic stains are classified according to their:
origin
26
A dental assistant with a Coronal Polish certificate can perform a Prophylaxis.
false
27
A support or resting point when using an instrument to control or stabilize the operator's hand is called a:
Fulcrum
28
A coronal polish is the complete removal of:
Plaque and extrinsic stains
29
Which of the following can be removed by coronal polishing?
Extrinsic staining
30
Which of the following is not an example of an extrinsic stain?
Dental fluorosis
31
What is the purpose of selective polishing?
Avoids unnecessary removal of enamel
32
The whitened or chalky spot on a tooth may be the breakdown of enamel in the early process of tooth decay and is known as
Decalcification
33
Positive effects that sealants can provide include:
All the above
34
For caries to develop, the following three factors must be present together:
A susceptible tooth, diet rich in fermentable carbohydrates, specific bacteria
35
Which of the following is not a factor when recommending sealant placement on a tooth?
Frequency of flossing
36
How are dental x-rays useful for detecting and diagnosing decay?
They can show decay between teeth where it cannot be visually observed
37
What is enamel hypoplasia?
Disturbance in the formation of enamel caused by high fever or tetracycline
38
The two specific groups of bacteria in the mouth that are responsible for caries are the mutans streptococci and the lactobacilli.
True
39
Etchant contains 35% and should not come into contact with the patient's oral mucosa.
Phosphoric Acid
40
In the decay process, the decay breakdowns the enamel and then enters into the
Dentin
41
Contraindications for sealants would include:
A primary tooth that will be lost soon
42
What agent is placed on a tooth to aid in retention of a sealant
Phosphoric acid
43
What is the primary cause of failure of sealant retention?
Moisture contamination
44
When placing sealants, what allergy should we be cautious of?
Acrylate
45
The benefits of saliva include:
All the above
46
The goal of CAMBRA is to
Assess the risk of caries in an individual
47
What is the term for when calcium and phosphate dissolve from hydroxyapitate crystals in the enamel?
Demineralization
48
The process of changing a simple chemical into another substance that contains the same element is called
Polvmerization
49
Most caries detection devices require the tooth to be
Clean
50
What develops when caries begin to demineralize the enamel?
Incipient Caries
51
Dental sealants act as a natural barrier protecting what surface of the teeth from decay?
Pits and Fissures
52
An advantage(s) of fluoride varnish is:
ease of application and patient acceptance
53
An electric toothbrush is less damaging to enamel and gingiva because
Scrubbing motion is not required since the bristles are moving
54
The least favorable floss to use on teeth with tight contacts is
Unwaxed
55
After plaque is thoroughly removed, about how long does it take to form again?
24 hours
56
One important reason women should seek dental care during pregnancy is
Untreated periodontal disease can increase the risk of pre-term births and low birth weight
57
Excess ingested fluoride is excreted through the
Kidneys, skin and feces
58
Overexposure of fluoride can lead to
Fluorosis
59
The major effects of fluoridated water are
Topical
60
Which fluoride is most beneficial to newly erupted enamel?
Topical
61
Neutral sodium fluoride (Na) is the best choice for patients with
Porcelain and composite restorations