Lecture 4 Grasp & Fulcrum

Question 1

What are the 3 parts of the Periodontal Instrument?

Answer 1

Handle

Shank

Working-End

Question 2

What is a Handle?

Answer 2

Handle: used for holding the instrument

Question 3

What is a Shank?

Answer 3

Shank: rod-shaped length of metal
located between the handle and
working-end of an instrument

Question 4

What is a Working-End?

Answer 4

Working-End: the part of the instrument

that does the work of the instrument

Question 5

What are the Parts of a Shank?

Answer 5

Functional Shank

Terminal Shank

Question 6

What is a Functional Shank?

Answer 6

Functional shank: the part of the shank that allows the
working-end to be adapted to the tooth surface;
begins below the working-end and extends to the last
bend in the shank nearest the handle

Question 7

What is a Terminal Shank?

Answer 7

Terminal shank: the portion of the functional shank nearest to the working-end

Question 8

What are the two kinds of shank designs?

Answer 8

Simple

Complex

Question 9

What is a Simple Shank Design

Answer 9

Simple
• A shank that is bent in one plane (front-to-back)
• Simple shank=straight shank
• Used primarily on anterior teeth

Question 10

What is a Complex Shank Design?

Answer 10

Complex
• A shank that has been bent in two planes
(front-to-back and side-to-side)
• Complex shank=angled/curved shank
• Used on posterior teeth

Question 11

How do you determine if your shank is simple or complex?

Answer 11

If it’s straight it is simple.

If it has a bend, it is complex.