Midterm 2024

Question 1

From soft to hard:

Answer 1

cementum < dentin < enamel

Question 2

Enamel rods

Answer 2

not supported by sound dentin

Question 3

luid movement in tubules =

Answer 3

dentinal sensitivity (hydrodynamic theory of pain transmission)

Question 4

Why 0.5 gingival contact

Answer 4

were like reduce margin leakes
Or to improve contact of matrix to tooth or something

Question 5

Ergonomics:

Answer 5

elbows close and forarms parallel

Question 6

Open side of tofflemire opens toward

Answer 6

gingiva

Question 7

Void in amalgam is due to

Answer 7

over packing box

Question 8

Convenience form:

Answer 8

seeing the box from the occlussal

Question 9

245 bur

Answer 9

bur rounded on occlusal floor

Question 10

Fill in the blank: axial wall

Question 11

fill in the blank: gingival floor

Question 12

What’s a non cutting instrument:

Answer 12

amalgam condenser

Question 13

Which wall converges on a class 5

Answer 13

NONE of them

Question 14

here is the motor located: in the hand piece or the delivery unit?

Answer 14

motor is in the handpiece, the conneciton is the swival

Question 15

What force for occlusion is the most?

Answer 15

flexure

Question 16

Which cleaning thing uses steam

Answer 16

autoclave

Question 17

Margin where the prepared tooth meets the unprepared tooth

Answer 17

Cavosurface

Question 18

Selective etch

Answer 18

Just enamel

Question 19

What tool do you use to get rid of excess amalgam on occlusal opening marginal ridge?

Answer 19

explorer

Question 20

When is hollenback used for alamalgam?

Answer 20

used early to carve (use right away)

Question 21

Composite vs amalgam:

Answer 21

amalgam you titrate

Question 22

Which best represents retention form

Answer 22

convergeing isthmus walls

Question 23

Purpose of plural floor floor

Answer 23

Distribute stresses in tooth

Question 24

Dental materials can usually resist which the of forces best

Answer 24

compression

Question 25

Why do you bevel axiopulpal line angle of a composite class II?

Answer 25

Disperse concentration of forces

Question 26

Why do you bevel the gingival margin

Answer 26

You don’t do it if you’re too deep

Question 27

If you class 2 box is too deep, where do you put the retention grooves

Answer 27

Inside of the DEJ

Question 28

Is rounding angles important for resistance or retention??

Answer 28

Resistance to fracture

Question 29

Why does class 2 have wedge

Answer 29

Prevent gingival margin leakage

Question 30

What is the purpose of rinsing the preparation

Answer 30

To cool the pulp

Question 31

Internal lines angles contribute to resistance or retention?

Question 32

What is the purpose of of incrementally filling for composite

Answer 32

to adequate light penetration

Question 33

Nice finish on composite

Answer 33

Make sure you smooth it out prior to curing

Question 34

what are the exit angles for class two

Answer 34

composite > 90 so end of rod is exposed

amalgam 90 degree keep smallest away

Question 35

what is the benefit of the oxygen inhibited layer?

Answer 35

to be able to place more composite

Question 36

what is the way to restore a class two

Answer 36

incremental

Question 37

what is the disadvantage to composite?

Answer 37

technequie sensitive

Question 38

where are the dovetails located

Answer 38

mesial and distal

Question 39

something about axis of entry