Which accurately describes the term “thixotropic”?

Liquids that flow more easily under mechanical forces.

What type of resin can be used to construct a custom tray?

All of the above are techniques used to construct a custom tray

What should you do to make an impression immediately before pouring?

Use a light stream of air to remove excess moisture

Which of the following are recommended for use with titanium implants?

Plastic or Teflon curettes and scalers

What diers all ceramic crowns and porcelain fused to metal crowns?

All ceramics are more life like than PFM due to opaque layers to hide metal

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Answers

1
. Rough areas on the tissue side of the tray do not to be removed: T/F
False
True
2
Most injuries occur in what sports?
Football, cheerleading, baseball
Soccer, baseball, tennis
Baseball, football, rugby
Basketball, baseball, socce
3
Which methods are used to protect against biohazard contamination from impressions?
All of the above
Disinfecting laboratory benches and other contaminated items after use
Disinfecting impressions before bringing them into the laboratory
Disinfecting impressions before sending them out to a laboratory
4
Which of the following is an example of systemic fluoride?
toothpaste
varnish
supplements
rinses
5
What are cement provisionals most frequently fabricated with?
Glass ionomer
Zinc oxide eugenol
Zinc phosphate
Resin cement
6
Mouth proctors can be evaluated clinically by
gagging
taste
all the above
irritation
7
What is the fastest, most efficient way to whiten teeth?
whitening toothpaste
at home
in office
trays w/ bleaching gel
8
Which of the following are noble metals?
gold, iron, steel
gold, silver, copper
gold, tin, silver
gold, palladium, platinum
9
. What are the three classifications of impressions taken?
Final, inverted, occlusal
Interproximal, mesial, distal
Frist, middle, last
Preliminary, final, occlusal.
10
Impression material is used to create a _________ reproduction of teeth and oral anatomy.
neutral
negative
positive
none of the above
11
A type of prosthesis recommended when either one tooth or multiple teeth are missing in within the same quadrant?
London bridge
fixed bridge
Maryland bridge
resin bonded bridge
12
What is the most corrosion resistant of the noble metals?
copper
gold
tin
silver
13
What type of wax can be added to an impression tray to extend the border?
Ceresin wax
Beeswax
Utility wax
Paraffin wax
14
What is the first step in cast preparation for constructing custom trays?
Fill undercuts
Spacer removal
Outlining
Painting adhesive
15
What properties do provisional restorations need?
Strength and hardness
Soft and fragile
Both B and C
Esthetics
16
Titanium implants can be coated with _______________.
BPA
Hydroxyapatite
rubber
glue
17
Which of the following is an example of a pattern wax?
Inlay Wax
Bite Registration Wax
Sticky Wax
Boxing wax
18
Which type of impression best reproduces the occlusal relationship of themaxillary and mandibular teeth
Preliminary impression
Bite registration
Final impression
Reversible hydrocolloid impression
19
Which type of mouthguard is most effective?
stock
all the above
Boil and bite
custom fit
20
What is the most durable preformed crown?
Stainless steel crowns
Polycarbonate crowns
Aluminum shell crowns
21
One of the fastest and most cost-effective ways of restoring the esthetic appearance ofteeth is
porcelain veneers
Bleaching
ceramic crowns
22
Which factor should be examined when evaluating the quality of an impression?
Surfaces are free from voids.
All of the above are factors.
Anatomical detail is sharp and not distorted.
The presence of the retromolar area and maxillary tuberosity are recorded.
23
type of implants most commonly placed and contains these 3 components: titanium implant, abutment screw&abutment post
maxillary
suberiosteal
endosteal
gold
24
What is the use of utility wax?
Extends the borders of tan impression tray
Both A and B
Covers brackets in orthodontic appliances
25
Dental assistants should instruct the patients to brush&floss in that area. also tell them to pull the floss through.
First statement is true, the second is false.
Both statements are false.
Both statements are true
First statement is false, the second is true.
26
Mouth protectors can become deformed due to
D. A&B only
A. Heat or pressure
C. Wearing it too much
B. Storage
27
Which accurately describes the term “thixotropic”?
Fluoride pH levels between 6 and 8
Liquids that flow more easily under mechanical forces.
Fluoride supplied in toothpaste, gel and rinses
Acid etching of restorative materials caused by acidic APF gels
28
trimmed maxillary model will be ___ at the anterior portion and the mandibularmodel will be ____at the anterior portion.
Slanted; pointed
Pointed; shifted
Pointed; rounded
Rounded; rounded
29
What are provisional restorations used for?
Function and esthetics
Maintain tooth position
All of the above
Protection
30
Which methods are used to protect against biohazard contamination fromimpressions?
Disinfecting laboratory benches and other contaminated items after use
Disinfecting laboratory benches and other contaminated items before use
Disinfecting impressions in treatment room before sending to laboratory
All of the above
31
When trimming a model, it has to fit the?
Dentist’s criteria
Lab’s criteria
Manufacturer’s instructions
Geometric standard
32
Manufacturers recommended that models should be pulled...?
In 24 hours
When the surface is still soft
In 1 hour after the pour
After the exothermic reaction cools
33
preparing the bone for implant with metallic burs, a __ speed handpiece should be used ____ water-cooling
slow; with
high; with
slow; without
high; without
34
An edentulous tray requires a minimum of ___ stops
8
6
4
2
35
Which of the following kinds of waxes are used to construct the metal framework of parties like and complete dentures?
Pattern Wax
Baseplate Wax
Boxing Wax
Utility Wax
36
Utility Wax may be used to:
All of the above
Adapt the periphery of an impression tray
Provide a better fit into the vestibule of the impression material
Cover sharp brackets and wires for orthodontic patients
37
True or False. Sheets of baseplate wax are usually layered.
True
False
38
What type of resin can be used to construct a custom tray?
Acrylic resin
All of the above are techniques used to construct a custom tray
Thermoplastic resin
Light cured resin
39
What is the most common irreversible hydrocolloid material used for preliminary impressions?
Hydroxyamide
Light-bodied
Alginate
Polyether
40
Fluoride is a mineral naturally occurring in food and water?
True
False
41
When using a trimmer, what should you NOT do?
Both A and B
Wear your PPE
Wear gloves
Eat, drink, or smoke
42
What should you do to make an impression immediately before pouring?
Leave disinfecting solution in the impression
Use a light stream of air to remove excess moisture
Dry it completely
Wet it
43
Which of the following are recommended for use with titanium implants?
Plastic or Teflon curettes and scalers
Magnetic curettes
Laser
sandblaster
44
What are most tooth-whitening products are made from
Calcium-based
Peroxide-based
sodium-based
45
Acidulated phosphate-fluoride (APF) is recommended for use for patients with cermamic and composite restorations.
False
True
46
Customized provisional are made with acrylic and composites for inlays, crowns, andbridges.
False
True
47
What diers all ceramic crowns and porcelain fused to metal crowns?
Both are exactly the same
All ceramics is stronger than PFM
All ceramics are larger than PFM
All ceramics are more life like than PFM due to opaque layers to hide metal
48
Tooth whitening is permanent .
False
True
49
Diagnostic and working casts have two parts? The _________ portion and the _________portion.
Structured; replica
Anatomic; duplicated
Anatomic; art
Crafted; replicated
50
Warmed baseplate wax, a folded moist paper towel, or a commercial nonstickmolding material may be used to create a:
Spacer
Cast
Separating medium
Handle
51
What is a common impression material used for final impressions?
polygram
Gel
Alginate
Polysiloxane
52
Patients with provisional coverage cannot eat sticky or hard foods in that area.
False
True
53
Dental Ceramics are?
Highly Elastic
Brittle
Reversible
All of the above
54
Which factor should be examined when evaluating the quality of an impression?
The presence of the retromolar area and maxillary tuberosity are recorded.
Surfaces are free from voids.
All of the above are factors.
Anatomical detail is sharp and not distorted.
55
What is used for Computer Assisted Restorations?
CAM/CAD
None of the above
Dentrix
CAD/CAM
56
What will occur if bone is heated to high temperatures during implant placement?
slow the healing process
trigger inflammation
all of the above
Damage tissue
57
Chronic exposure to fluoride can result in which of the following?
Hypersensitivity
Dyguesia
Irritated gum tissue
Dental fluorosis
58
What completely covers the anatomic crown of an individual tooth?
Full crown
PFM crown
Veneer
Three-quarter crown
59
Fluoride gels are applied in a tray to prevent smooth-surface caries.
False
True
60
Which of the following statements is true regarding teeth bleaching?
Acid etching will polish the surface of the enamel
All teeth bleaching products contain peroxide
Teeth bleaching occurs when material passes through spaces inenamel&oxidize
61
Sheets of baseplate wax are usually layered to?
Produce the form on which denture teeth are set
Construct the metal framework of partial and complete dentures
Form the base portion of gypsum model
Produce pattern for metal castings using the lost wax technique
62
Varnish containing 4% sodium fluoride has been shown to be effective in primary and permanent dentitions.
False
True
63
What are advantages of Computer Assisted Restorations?
Reduced tooth sensitivity
All of the above
No provisionals
No impressions
64
In office fluoride treatment is supplied as which of the following?
solution
all of the above
foam
gel
65
The cast metal skeleton that provides support for the remaining components of the prosthesis.
partial
minor
major
framework
66
Which classification of impression provides the most accurate representation of teeth when fabricating dental implants.
Bite registrations
Preliminary impressions
Occlusal impressions
Final impressions.
67
How long should an extraction site heal prior to placing an implant?
2 months
2 weeks
4 weeks
6 months
68
What type of implant appliance is most used?
Screw type
Loose type
Smooth type
Open type
69
portion of the model that is teeth&tissues of the mouth is ___ portion,While the part that is the base is ___ portion.
anatomical; foundation
art; oral cavity
anatomical; art
foundation; art
70
Implants and abutment screws are commonly made from what because of its compatibility with bone and oral tissues?
silver
copper
lead
titanium
71
. What is the machine used to polish/trim a custom tray?
Ultrasonic scaler
Model trimmer
Dental lathe
None of the above
72
The types of mouth formers are Stock, custom made, mouth formed
False
True
73
Which type of impression tray covers half of the arch while taking impressions?
Quadrant tray
Section tray
Full arch tray
Bite tray
74
What are provisional restorations used for permanent restorations?
True
False
75
In pure form, _________ metals corrode in the mouth more than noble alloys.
advanced
premium
base
royal
76
Which are reasons for teeth become discolored
All the above
Trauma
Aging
Excessive fluoride
77
What is the used as a guide to prepare the location of the bone?
Porcelain splice
impression
Acrylic stent
sterile ruler
78
Light cured resin can be used to make trays for which types of impressions?
Edentulous
All of the above
Partially edentulous
Dentulous
79
Osseointegration occurs when bones grow within _________ angstroms of the titanium surface?
75
100
25
50
80
Brush with toothpaste
Put it in water
Brush with toothpaste
Soak in mouthwash
Air dry in rigid case
81
inflammatory process (periodontal disease inflammation)may occur when plaque isn't cleaned near implant side is called
inflammation
peri-implantitis
periapical cyst
periodontal disease
82
What is the most common ceramic used?
liquid ceramics
glass
porcelain
silica based
83
What are the three classifications of pattern waxes?
All the above
Processing Waxes
Pattern Waxes
Impression Waxes
84
A sports guard thickness of about ___mm is desirable for heavy contact sports.
8
5
2
4
85
After fabrication when can a self cured resin tray be used?
15 minutes
After 24 hours
1 hour
30 minutes
86
What is used to select color of restorations?
Shade selector
Shade comparer
Shade guide
Shade sample
87
What prevents the custom tray from seating too deeply?
handle
baseplate wax
spacer stop
spacer
88
What are important factors to a provisional restorations no matter the material used?
occlusion
all of the above
contrast
countour
89
Side effects of tooth whitening procedures are sloughing of the gingiva and toothhypersensitivity.
True
False
90
. Which type of impression tray is designed to create a mechanical lock to hold theimpression material in place.
Smooth tray
Water coolant tray
Triple tray
Perforated tray
91
Which of the following is NOT an acceptable feature and should be avoided when taking a quality impression on a patient?
Retromolar area or tuberosity
Anatomy of palatal vault
Anatomy of frenum attachments
Bubbles or voids
92
What percentage of injuries occur in unorganized sports?
82%
35%
45%
62%
93
Which of the following is NOT a form of gypsum product used to pour up study models?
Model plaster
Pumice
Dental stone
High-strength stone
94
Caring for your mouth guard, you want to rinse it with alcohol or denture cleanser?
False
True
95
impression tray should be ____mm deep of material between the tray and the incisal or occlusal edges of the teeth
6-7
5-1
2-3
5-6
96
What whitening agents are effective in removing type(s) of stain or discoloration?
Decalcification
Coffee stains
Tetracycline stain
97
Which of the following waxes are used to construct the metal framework of a partial orcomplete denture?
Utility wax
Boxing wax
Pattern wax
Baseplate wax
98
What type of crown covers the anatomic crown?
both
Three-quarter crown
Fill crown
Neither
99
An impression tray should be how mm of material between the tray and the incisal orocclusal edges of the teeth?
5-6
2-3
1-2
1.5-2.5
100
What are pattern waxes used for?
To make chapstick
To construct metal castings
Base when fabricating dentures
Both A and B

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