review session

Question 1

is CEREC open or closed system?

Answer 1

closed unless primescan

Question 2

which CEREC can be autoclaved

Answer 2

primescan

Question 3

which cerec will never req powder

Answer 3

primescan

Question 4

when waxing a die for PFM crown what is placed on the die first?

Answer 4

spacing wax, then form shape for metal base

Question 5

type one alloy % elong

Answer 5

18

Question 6

type one alloy yeild strength

Answer 6

<140mPa

Question 7

type one alloys mainly used for:

Answer 7

class I inlay

Question 8

type 2 alloys elong %

Answer 8

18

Question 9

type II alloy yeild strength

Answer 9

150mPa

Question 10

type II alloys used for:

Answer 10

class II inlay

Question 11

type 3 alloy yield

Answer 11

200-340

Question 12

type 3 alloy used for:

Answer 12

crown/FPD

Question 13

type 3 alloy elong %

Answer 13

> /=12

Question 14

type 4 alloy %elong

Answer 14

10

Question 15

type 4 alloy yield

Answer 15

> 341(500)

Question 16

type 4 alloy used for

Answer 16

FPD/RPD

Question 17

noble metals behavior

Answer 17

chemical behavior
corrosion and ox resistant
gold/platinum group

Question 18

base metal behavior

Answer 18

undergoes ox readily

Question 19

Identalloy system

Answer 19

ID by principal metals
Au-Pt-Pd, Pd-Ag, Ni-Cr-Be
special alloys for MC restorations

Question 20

is a “precious” metal a classifcation

Answer 20

no, denotes cost