Insturments

Question 1

How do we remove unsupported enamel?

Answer 1

with thin rotary instrument of hand instrument

Question 2

What bur do we use for class II composite preparation?

Answer 2

small round 
or 
elongated pear bur 
or 
diamond

Question 3

Which bur do we use for pinhole insertion?

Answer 3

¼ round bur or a pear shaped, held perpendicular to the pin

Question 4

What bur do we use for class I composite preparation?

Answer 4

small round
or
elongated pear bur (for 90 degree cavosurface margins)

Question 5

What bur do we use for retention grooves?

Answer 5

small round bur

Question 6

What bur do we use for retention grooves on class V composite preparation?

Answer 6

small round bur

Question 7

How to remove Hard Dentin?

Answer 7

a bur
or
a sharp cutting instrument

Question 8

How is Soft Dentin excavated?

Answer 8

with hand and rotary instrumentation

Question 9

Can we remove Firm Dentin with hand excavation?

Answer 9

resistant to hand excavation

Question 10

How is Leathery Dentin excavated?

Answer 10

hand instruments without much pressure

Question 11

How do you enter a class I, OL preparation?

Answer 11

cross cut fissure
or
small round
or 
inverted cone bur

Question 12

Which # of bur to use for class I?

Answer 12

245

Question 13

Which # of bur to use for class II?

Answer 13

245

Question 14

What tool do we use to break enamel to expose the proximal box?

Answer 14

spoon excavator

Question 15

What do we use to remove remaining proximal enamel after exposing box?

exam**

Answer 15

Hand instruments
Small dimension burs
End cutting burs

Question 16

What burs for occlusal punch cut?

Answer 16

Inverted cone
cross cut fissure
round

Question 17

You would use a dental explorer to:

a. Examine for root caries.
b. Check a prepared tooth for smoothness and
retention grooves and points.
c. Check for pit and fissure caries.
d. Check for smooth surface caries.

Answer 17

a. Examine for root caries

b. Check a prepared tooth for smoothness and
retention grooves and points

d. Check for smooth surface caries

Question 18

How do you assess dentin hardness?

a. With the use of a dental explorer.
b. With the use of a spoon excavator.
c. With a bur on a low speed handpiece.
d. With a bur on a high speed handpiece.

Answer 18

a. With the use of a dental explorer

b. With the use of a spoon excavator

Question 19

What do we use for AMG carving?

Answer 19

• small discoid cleoid
• 1/2 holllenback carver
• small spoon excavator

Question 20

What do we use for AMG precarve burnishing?

Answer 20

burnisher w/ heavy strokes

Question 21

What do we use for AMG condensation?

Answer 21

amaglam condensing instruments: condensers or pluggers

Question 22

What do we use for AMG postcarve burnishing?

Answer 22

w/ burnisher: PK3 or thomas or acorn burnisher

Question 23

What do we use for finishing?

Answer 23

finishing burs and finishing discs