Final - Solidification & Microstructure of Metals/Alloys

Question 1

crystalline substance with metallic properties composed of two or more chemical elements, at least one of them being metal

Answer 1

alloy

Question 2

number of elements of 115 that are metal

Answer 2

81

Question 3

three major classes of dental materials

Answer 3

metals, ceramics, polymers/composites

Question 4

these have high tensile strength, compressive, and tough materials

Answer 4

metal

Question 5

ceramics are not very blank

Answer 5

tough

Question 6

ceramic have low blank strength

Answer 6

tensile

Question 7

ortho wires are blank

Answer 7

alloys

Question 8

all metals used as restorative materials in dentistry are blank

Answer 8

crystalline solids

Question 9

oxidation of an element is what leads to blank in humans which is why nobody has trouble with gold

Answer 9

allergies

Question 10

high noble requires blank percent of noble

Answer 10

40%

Question 11

noble alloy requires this much noble element

Answer 11

> 25%

Question 12

silver is or isnt a noble metal

Answer 12

not

Question 13

noble metal has a high blank potential with respect to hydrogen electrode

Answer 13

positive

Question 14

metal with high intrinsic value but not necessarily noble

Answer 14

precious

Question 15

highest density metal

Answer 15

platinum then gold

Question 16

energy difference during melting point which is a more flat line

Answer 16

latent heat

Question 17

cast alloy microstructure in which all of the grains have similar dimensions

Answer 17

equiaxed grain microstructure

Question 18

cast structure consisting of elongated crystals with a branched morphology rather than equiaxed grains

Answer 18

dendritic microstructure

Question 19

PFM alloy means blank and is the most mainstream form of restoration currently

Answer 19

porcelain fused to metal

Question 20

type 1 alloys which are softer are used for blank

Answer 20

inlays

Question 21

type 5 dental alloys are used for blank and are very stiff

Answer 21

implants, partials

Question 22

short bridges are type blank dental alloys

Answer 22

3

Question 23

long span bridges are type blank alloys

Answer 23

4

Question 24

onlays and single crowns are blank type alloys

Answer 24

type2

Question 25

crowns can also be this type alloy

Answer 25

3

Question 26

CTE and CTC are blank for metal

Answer 26

the same

Question 27

CTE and CTC are blank for porcelain

Answer 27

not the same

Question 28

predicting bond stregnth and longevity of porcelain to metal restoration can be achieved by this test

Answer 28

thermal shock test

Question 29

element or alloy whose atomic structure readily loses electrons to form positively charged ions, high thermal and electric conductivity

Answer 29

metal