Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Dental materials > Final exam > Flashcards

Final exam Flashcards

1
Q

When a 2 paste system of ZOE is used, how are the materials mixed?

A

until a uniform color is achieved

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

classifications of class 2 gold alloy?

A

medium

inlays, crowns

medium yield strength

medium wear resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a negative impression?

A

impression of the patients mouth, when alginate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

mixture of small and microfine particles

A

microhybrid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

composition of sealant materials?

A

bis-GMA glycidyl methalcrylate

UDMA urethane dimethacrylate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

microhybrid with nanosized particles added

A

nanohybrid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

how do you test for mercury levels?

A

urine sample

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is 1 spill of mercury?

A

400 mg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

how are the anterior borders of diagnostic cast trimmed?

A

symmetrical to the midline
maxillary- runs distal of k9 to midline
mandibular- distal of k9 to distal of k9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the act of mixing amalgam?

A

trituration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

this is the color of a tooth or restoration. it may include a mixture of colors such as yellow-brown

A

hue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does a class 1 gold alloy consist of?

A

soft

inlays (not heavy in function)

low yield strength

low wear resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the types of trays used for impressions?

A

polysulfide
poly vinyl
alginate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

amount of lightness or darkness of the tooth

A

value

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what organs are affected by mercury?

A

kidneys is the main organ

brain, kidneys, and testicles retain the longest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is an alginate impression tray?

A

metal preforated trays
disposable
stock

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what makes ZOE biocompatible with tooth structures?

A

the neutral PH of 7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what stone is the choice of pouring impression materials?

A

microstone.. it is less porous and gives greater detail

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what is a metallic restoration material composed of silver based alloy with mercury?

A

amalgam

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What are the two ways elastic impression material can be classified by?

A

Irreversible and reversible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

fillers that are smaller, averaging 0.04 in diamete and 0.03 to 0.5

A

microfilled

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What was G.V Black’s classification of cavities?

A

He and Frederick McKay determined drinking water was the factor of cavities.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what is the anatomical portion of the cast?

A

oral anatomy.. comprises 2/3 total heigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What type of elastic material will not return to its original state?

A

Irreversible (powder/liquid)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

class 2 of gypsum products

A

model plaster (almost obsolete)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

indirect restorations

A

fabricated outside of the pt. mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

these materials are expected to be long lasting replacement for missing damaged or discolored teeth

A

permanent restorations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

what are the steps in applying a sealant?

A 
isolate with cotton roll or rubber dam
pumice tooth with non fluoridated paste
rinse and dry
apply etchant for 60 seconds
rinse and dry
apply sealant in pits and fissures
light cure for 30-60 seconds
floss
check occlusion
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

what does TLV mean?

A

threshold limit value

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

what are the sizes of the mandibular impression trays?

A

20-25

20 is the largest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What are veneers?

A

thin layers of esthetic materials that are used to improve the appearance of the teeth. they are bonded to the fronts of the teeth. they can be used to lighten the color of teeth, cover stains, repair chips or other defects, lengthen worn teeth, increase the size of small teeth, close spaces, or reshape crooked teeth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

PFG

A

porcelain fused gold

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What are the classifications of impression materials?

A

Elastic and Rigid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

what are ZOE cements?

A

Zinc Oxide Eugenol cements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

what is boxing wax?

A

wrap around the impression to make a base

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

what is a poly vinyl impression tray?

A

stock, disposable, tri-tray

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

What is a poly sulfide impression tray?

A

custom tray

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

what are classification of composites by filler size

A

macrofilled, microfilled, hybrid, microhybrid, nanohybrid, nanocomposites..

39
Q

classifications of class 3 gold alloy?

A

hard

inlays, crowns, bridges

high yield strength

high wear resistance

40
Q

these are positive replicas of teeth produced from impressions that create a negative representations of teeth.. commonly called study models and generally from plaster or stone. used for pt. education, treatment planning, and for tracking the progress of treatment or for numerous chairside and lab procedures..

A

diagnostic casts

41
Q

what gauge material is used in fabricating mouth protector?

A

.080

42
Q

contain both large and small fillers

A

hybrid

43
Q

aka provisional restorations used for short periods of time, several days to weeks

A

temporary restoration

44
Q

class 4 gypsum products

A

dye stone (made to pour dyes, used for ceramics/crowns)

45
Q

What are ZOE cements used for?

A

temporary cementation, temp. or intermediate restorations, high and low strength bases, and as root canal sealers and perio dressings.

46
Q

like provisional, placed for limited time however the time may extend from weeks to months..

A

intermediate

47
Q

Resin bonded cement

A

Max-Cem Elite: this cement etches, bonds and adheres to the tooth structure all in one. It has nano-particles, contains quartz, lithium and is very compatible to the tooth structure and the crown, bridge or veneer. No mixing!!! Just insert mixing tip

48
Q

Zinc polycarboxylate

A

supplied P/L

used for final cementation of indirect restorations, long term temp. cements

49
Q

What type of impression material is able to pick up undercuts?

A

elastic

50
Q

What material that we discussed in class is reversbile?

A

Rigid impression material (thermoplastic)

51
Q

what are ZOE cements ideally suited for and why?

A

temporary restoration- their weaker tensile strength allows them to be easily removed at a second appt. when a temp. restoration is to be placed..

52
Q

what are sealants?

A

unfilled or lightly filled resin used to seal noncarious pits/fissures of deciduous and permanent teeth

53
Q

this is the measure of gold content

A

karat

54
Q

this is the intensity of strength of a color.. such as bold yellow vs. pastel yellow

A

chroma

55
Q

How do composite materials come supplied?

A

delivery system
single syringe
two paste system

56
Q

which type of impression material will not pick up undercuts?

A

rigid

57
Q

physical and chemical properties of gypsum?

A

dihydrate (cas04*2h20) happens when water is mixed with powder

hemihydrate (cas04*1/2h20) process called calciling to dry off powder (powder in plaster bin)

58
Q

what gauge material is used to fabricate bleaching tray?

A

0.040

59
Q

what are the sizes of the maxillary impression trays?

A

1-5

1 is the largest

60
Q

how are the lateral borders of cast trimmed?

A

parallel to the buccal surface of the posterior teeth

distal of k9 to distal of molar

61
Q

what are the steps in fabricating mouth protectors?

A 
trim casts in horsehoe shape
insert material in frame
place max. cast on platform
lower when heated and sagged and turn vaccum on
remove guard after cooled
trim excess material from cast
62
Q

large particles, ranging from 10-100 microns. make composites difficult to polish and become rough

A

macrofilled

63
Q

filler particles ranging from 5-75 nanometers

A

nanocomposites

64
Q

class 1 of gypsum products

A

impression plater, almost obsolete

65
Q

classifications of restorative materials

A

intermediate
temporary
permanent

66
Q

GC

A

gold crown

67
Q

what is the safe level for mercury in a 40 hr work week?

A

.005/m3

68
Q

How are ZOE cements available?

A

powder/liquid, and paste/paste systems

69
Q

What is a positive impression?

A

when the impression is set in stone.. it has been poured and is known as a diagnostic cast

70
Q

how are the posterior borders of cast trimmed?

A

square with the midline.. trim these while the maxillary and mandibular casts are together

71
Q

When the powder/liquid system of ZOE is used, how is it mixed?

A

powder is incorporated into the liquid until the desired heavy consistency is achieved.

72
Q

what is 2 spills of mercury?

A

600 mg

73
Q

what is the art portion of a diagnostic cast?

A

serves as a base of the study model.. it comprises 1/3 of total height

74
Q

Glass ionomers

A

capsule form now and are mixed in a machine called a Vari-mix. Should you have to mix any of these in the powder/liquid version the ratio is now labeled on top of the bottles due to diversity so everyone can mix the dental materials needed for cementation of crown, bridges and veneers.

75
Q

What type of elastic material will return to its original state?

A

Reversible (only one type of impression is reversible)

76
Q

class 3 gypsum products

A

dental stone (stone we use, microstone)

77
Q

what are the types of permanent cements?

A

resin-bonded
glass ionomers
zinc polycarboxylate

78
Q

What is the composition of alginate impression material?

A

agar

1:1 ratio of powder into liquid

79
Q

What has eugenol been known for?

A

its sedative effect to the pulp, largely caused by its antibacterial effects

80
Q

Uses of gypsum?

A

diagnostic casts, working casts, cye

81
Q

what are the steps in fabricating a bleaching tray?

A 
trim casts
apply block out resin to teeth
light cure block out resin
clamp thermoplastic sheet in vaccum former
place cast in center of platform
once material sags when heated, lower frame and turn on vaccum
cool for one minute
remove cast
trim with scissors
repeat process
82
Q

how does mercury come supplied?

A

in premeasured capsules, known as mgs spills

83
Q

composition of polysulfide impression material?

A

sulfa

1:1 ratio, used for dentures or crown and bridge

84
Q

classifications of class 4 gold alloy?

A

extra hard

partial denture, framework, bridges

high yield strength

high wear resistance

85
Q

what metalas are used to fabricate implants?

A

titanium

86
Q

what metals are used to fabricate partials?

A

cobalt
chromium
alloy

87
Q

What does a diagnostic study model contain?

A

maxillary and mandibular cast

3/3

88
Q

what is 3 spills of mercury?

A

800 mg

89
Q

what is the composition for polyvinyl impression material?

A

polyvinyl siloxane used for crown and bridge

1:1 ratio scoop

90
Q

Direct restorations

A

placed directly onto cavity preparations

91
Q

composition of ZOE?

A

Powder- ZINC

Liquid- EUGENOL

92
Q

what are the parts of the model trimmer?

A

grinding wheel
casing (outside)
platforms

93
Q

what is the percentage of gold times ten?

A

fineness

Dental materials (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions