INSTRUMENT QUIZ

Question 1

THREE NUMBER FORMULA: when do we use it

Answer 1

when primary cutting edge is at 90 degrees

Question 2

THREE NUMBER FORMULA: what is first number

Answer 2

WIDTH of blade -mm

Question 3

THREE NUMBER FORMULA: what is second number

Answer 3

LENGTH of blade - mm

Question 4

THREE NUMBER FORMULA: what is third number

Answer 4

ANGLE of blade from long axis of shaft - centigrade

Question 5

FOUR NUMBER FORMULA: when do we use it

Answer 5

when primary cutting edge is NOT at a right angle w/ long axis of blade

Question 6

FOUR NUMBER FORMULA: what is first number

Answer 6

WIDTH of blade

Question 7

FOUR NUMBER FORMULA: what is second number

Answer 7

ANGLE of CUTTING EDGE from long axis of shaft

Question 8

FOUR NUMBER FORMULA: what is third number

Answer 8

LENGTH of blade

Question 9

FOUR NUMBER FORMULA: what is fourth number

Answer 9

ANGLE of BLADE from long axis of shaft

Question 10

12 or 14

Answer 10

wheel bur

Question 11

1/16-11

Answer 11

round bur

Question 12

34

Answer 12

inverted cone

Question 13

55 (50 series)

Answer 13

plain straight fissure

Question 14

169

Answer 14

plain tapered fissue

Question 15

556 (550 series)

Answer 15

crosscut straight fissure

Question 16

699

Answer 16

crosscut tapered fissure

Question 17

330

Answer 17

pear shaped

Question 18

1156

Answer 18

dome end straight fissure

Question 19

red band

Answer 19

carbide finishing bur

Question 20

soflex disc colors

Answer 20

red - course
orange - med
light orange - fine
yellow - SUPER fine

Question 21

rake face

Answer 21

TOWARDS direction of cutting (inside of a wave)

Question 22

clearance face

Answer 22

AWAY from direction of cutting (outside of a wave)