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Biomaterials > Physical Properties > Flashcards

Physical Properties Flashcards

1
Q

study of how matter flows and its characteristics

A

rheology

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2
Q

rheology is related to blank

A

viscosity

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3
Q

resistance to motion of a liquid

A

viscosity

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4
Q

viscosity is controlled by internal blank forces in a liquid

A

friction

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5
Q

a liquid that becomes less viscous and more fluid under pressure

A

thixotropic

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6
Q

time dependent plastic strain of materials under a static load or constant stress

A

creep

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7
Q

deformation potential of long span metal bridges during porcelain firing

A

sag

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8
Q

deformation under static load

A

flow

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9
Q

flow is used for blank materials like super cooled liquids like waxes

A

amorphous

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10
Q

measure of how well heat is transferred through a material by the conductive flow

A

thermal conductivity

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11
Q

occurs when electrons increase their kinetic activity

A

conductivity

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12
Q

materials with good thermal conductivity

A

conductors

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13
Q

material with low thermal conductivity

A

insulator

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14
Q

controls the time rate of temp change as heat passes through a material

A

thermal diffusivity

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15
Q

change in length per unit of the original length of a material when its temperature is raised 1 degree Celsius

A

coefficient of thermal expansion

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16
Q

material with closest coefficient of thermal expansion to teeth

A

gold

17
Q

material with farthest coefficient of thermal expansion to teeth

A

unfilled resin

18
Q

dentin modulus of elasticity… flexible

A

14

19
Q

enamel modulus of elasticity…. very hard

A

130

20
Q

best material for restoring dentin like anterior teeth due to same modulus of elasticity

A

composite

21
Q

light is blank radiation

A

electromagnetic

22
Q

visible spectrum

A

400 nm (violet) - 700 nm (dark red)

23
Q

referred to as the basic color-dominant wavelength

A

hue

24
Q

relative blackness or whiteness

A

value (0=black… 100=white)

25
Q

brightness, saturation, intensity of the color

A

chroma

26
Q

color that can travel deepest

A

blue

27
Q

degree to which light is bent when it passes from one medium to another

A

refractive index

28
Q

ability of a material to resist abrasion or wear

A

hardness

29
Q

objects may appear color matched under one type of light but not under another light source

A

metamerism

30
Q

object that absorbs light waves under the visible spectrum and convert them into visible longer wavelengths

A

fluorescence

31
Q

most bite force is on these teeth

A

molars

Biomaterials (7 decks)

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