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Biomaterials > Test 3 > Flashcards

Test 3 Flashcards

1
Q

heat sensitive substances, consisting of hydrocarbons or esters of fatty acids that are insoluble in nonpolar organic solvents

A

natural wax

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2
Q

a complex organic compound of varied chemical compositions

A

synthetic wax

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3
Q

what is composition of wax

A

medium to high weight polymers

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4
Q

what has the highest coefficient of thermal expansion

A

waxes

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5
Q

Waxes display plastic deformation under pressure which depends on the temperature of the wax, the pressure and the duration of the applied pressure

A

flow

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6
Q

form the general predetermined size and contour of an artificial dental restoration, which is to be constructed of a more durable material such as gold or acrylic resins

A

pattern wax

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7
Q

Inlays, crowns, bridges, base plate, casting is what type of wax

A

pattern wax

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8
Q

used in the making of patterns for inlays, onlays, crowns, & other fixed prostheses

A

inlay wax

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9
Q

what are three requirements for inlay waxes

A

good adaption to dies, thermal stability at low temps and complete pyrolysis at high temps

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10
Q

to form a cast from an impression of the edentulous arch, first a wax box must be formed around the impression.

A

boxing wax

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11
Q

a metal filled wax, with a cloth core, Aluminum is added to increase the specific heat , and the cloth to prevent fracture is called what

A

aluwax

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12
Q

used in the making of removable full dentures or partial dentures and try in denture setups.

A

base plate wax

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13
Q

aluwax is what type of wax

A

impression wax

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14
Q

the highest composition of wax is

A

parrafin

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15
Q

minimum and maximum amount of allowable flow is defined by what ADA specification

A

4

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16
Q

what are the three types of dental waxes

A

pattern wax, processing wax, and impression wax

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17
Q

base plate wax is used for what? and is what type of wax

A

dentures, pattern wax

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18
Q

inlay wax composition is

A

60% paraffin

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19
Q

inlays, base plate and casting are all what type of wax

A

pattern

20
Q

which three waxes is not governed by ada

A

casting wax, processing wax, impression wax

21
Q

metallic framework of removable partial dentures.

A

casting wax

22
Q

base plate wax composition is

A

80% ceresin

23
Q

used in the dental laboratory during the processing of indirect dental restorations.

A

processing wax

24
Q

what are three examples of processing wax

A

boxing wax, utility wax and sticky wax

25
Q

boxing wax is what type of wax

A

processing

26
Q

utility wax does not need to be heated or put in a flame it is already really moldable-T/F

A

T

27
Q

sticky wax is used for

A

repair

28
Q

are specialty waxes designed for specific purposes.

A

impression wax

29
Q

Bite registration wax for removable prostheses is an example of what type of wax

A

impression wax

30
Q

green wax is usually found in which wax

A

impression wax

31
Q

– Primary impressions

– Border molding (dentures) is what kind of wax

A

impression wax

32
Q

Which type of wax is used to establish the vertical dimensions of occlusion for a patient with a removable prosthesis

A

pattern

33
Q

For dental castings the contact angle between the wax should be high. This is because the hydrophilic wax will be better coated by investment material than hydrophobic wax which is false or true

A

false true

34
Q

what is the largest component of inlay wax

A

parrafin

35
Q

what is used to make impressions

A

box wax

36
Q

which waxes are not regulated by ADA

A

processing wax, casting wax and impression wax

37
Q

which waxes are regulated by ADA

A

inlay wax and base plate wax

38
Q

overheating a wax will do what

A

evaporate or burn off lower molecular weight components, making the wax brittle

39
Q

a hydrophilic wax will be better coated by what

A

casting investment

40
Q

aids in making a final cast from an impression, used to make a master cast, bendable at room temp

A

boxing wax

41
Q

building up of a tray to make an impression, bendable at room temp

A

utility wax

42
Q

room temp it is brittle, used to repair a broken denture-brittlness allows two broken dentures not to fall apart

A

sticky wax

43
Q

used in operative dentistry, used in crowns and bridge

A

inlay waxes

44
Q

used most frequently in removable partial dentures and, comes in unique shapes

A

casting wax

45
Q

used most frequently in removable full dentures

A

base plate wax

Biomaterials (4 decks)

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