Dental Tools

Question 1

High Speed:
RPM?
Cutting type?
Requires?

Answer 1

> 200,000 rpm
Efficient cutting
Needs water coolant

Question 2

Straight Attachment is used for

Answer 2

Extra-oral procedures only

Question 3

Contra-angled Attachment is used for

Answer 3

For intra-oral procedures

Question 4

Bladed Instruments are used for

Answer 4

Intracoronal Preps

Question 5

Diamond Instruments are used for

Answer 5

Extracoronal Preps

Question 6

330:
Length
Taper
Diameter
Shape

Answer 6

1.5 mm length
8 degree taper
0.8 mm diameter
Pear shaped

Question 7

Define Rake Face

Answer 7

Faces cutting direction. Forms the chip

Question 8

Define Clearance Face

Answer 8

Clears the chips. Away from cutting direction.

Question 9

Define Edge Angle

Answer 9

Between rake and clearance surfaces

Question 10

Define Rake Angle

Answer 10

Between radius line and rake face.

Positive- More efficient, less durable

Negative- more durable, smaller chips

Question 11

Define Clearance Angle

Answer 11

Angle that provides clearance between cutting edge and tooth structure

Question 12

Black’s 3 Number Instrument Formula:

Answer 12

1. Width of blade in tenths of millimeter
2. Length of blade (mm)
3. Angle of blade in 100 degree circle

Question 13

Black’s 4 Number Formula:

Answer 13

1. Width of blade in tenths of millimeter
2. Angle of cutting edge in 100 degree circle
3. Length of blade (mm)
4. Angle of blade in 100 degree circle