Final

Question 1

Lingual first plane converges at what angle to facial first plane

Answer 1

6-10 degrees

Question 2

Mesial proximal and distal proximal of lingual first plane should converge at

Answer 2

6-8 degrees

Question 3

Inclination of maxillary incisors

Answer 3

30 degrees labial

Question 4

Width of shoulder

Answer 4

1.2 mm

Question 5

Bur used for shoulder

Answer 5

702

Question 6

Bur used for chamfer

Answer 6

242

Question 7

Football bur

Answer 7

285

Question 8

Thin bur for proximal

Answer 8

747

Question 9

MCC advantages

Answer 9

Strength of metal
Esthetics of ceramic
Retention, resistance
Used for FDP
Abutment for RPD

Question 10

MCC disadvantages

Answer 10

Tooth reduction
Subgingival margin can cause perio problems
Inferior esthetics to ACC
Opposing tooth wear
High lab costs

Question 11

MCC contraindications

Answer 11

Active caries
Untreated perio disease
Large pulp chaber
Reduced esthetic demand
More conservative can be used
Parafunctional activity

Question 12

Principles of tooth prep

Answer 12

Subtractive process
Restorative materials dictate reduction
Retention, resistance form
Biological factors

Question 13

Provisionals can be used to

Answer 13

determine therapeutic effectiveness of a specific treatment

Question 14

Mechanic principles of provisional

Answer 14

Resist functional loads
Resist removal forces
Maintainin interabutment alignment

Question 15

Critical range for high speed with no water in seconds

Answer 15

20-25

Question 16

Present factors leading to pulp death

Answer 16

Perp trauma
Microb exposure
Desiccation
Chemical exposure
Thermal exposure

Question 17

Strength of polymethyl methacrylate resin

Answer 17

1/20th of metal ceramic allows–>more fracture (5 percent)

Question 18

Jet chemical

Answer 18

Polymethyl methacrylate

Question 19

Trim chemical

Answer 19

Polyethyl methacrylate

Question 20

Provisa chemical

Answer 20

Bis-GMA

Question 21

Tg of trim compared to jet

Answer 21

Trim Tg: 65 degrees

Jet Tg: 100-120 degrees

Question 22

____ molecular weight monomers do what with bisGMA

Answer 22

Higher molecular weight reduce shrinkage

Question 23

BisGMA is based on

Answer 23

Dimethylacrylates

Question 24

Polymerization steps

Answer 24

Activation
Initiation
Propogation
Termination

Question 25

Density of polymer vs monomer

Answer 25

1.2g/cm vs .94g/cm Happens because of shrinkage

Question 26

Trim reaches a temperature of ____ after ____ mintues

Answer 26

48 degrees in 10 mintues

Question 27

Highest temp to lowest

Answer 27

Jet Trim Bis-GMA

Question 28

Materials dont go past 35 degrees until

Answer 28

6 minutes

Question 29

Shrinkage percentage

Answer 29

6 percent volumetric

Question 30

Prefabricated crown steps

Answer 30

``` Measure Select crown Adjust Filling material Bite adjustment ```

Question 31

Minimal preparations

Answer 31

Shorter margins Only enamel layer Break contacts Dont worry about undercuts

Question 32

Relining provisional shell

Answer 32

``` Internal relief: common on lingual Internal trimming Internal stainnig Reline Tirmming Finish, Polish ```

Question 33

Occlusal contact and interproximal contact

Answer 33

Occlusal: one layer of shimstock Interproximal: two layers of shimstock