Gold Preparations

Question 1

What are the resistance retention form features in a gold prep

Answer 1

Occlusal offset
Mesial and distal grooves
Functional cusp bevel
4 plane reduction
6degree axial inclination

Question 2

What is the point of an occlusal offset groove

Answer 2

Increase resistance retention form and e sure there is enough material in areas where the metal could be thin

Question 3

Rentention grooves should be
A. At the margin
B. Below the margin
C. Above the margin

Answer 3

C. Above the margin

Question 4

What is the axial inclination of gold prep

Answer 4

6 degrees

Question 5

What is the angle of convergence for a gold prep

Answer 5

12 degrees

Question 6

When prepping a gold 3/4 crown what should be the internal angles of the prep

Answer 6

60degrees

Question 7

Bevel is what angulation.

Answer 7

45 degrees

Question 8

Flare is what angulation

Answer 8

60 degrees

Question 9

What should the buccal reduction of a 3/4 crown be

Answer 9

None

Question 10

What should the occlusal prep of a gold 3/4 crown be

Answer 10

Depending on Occlusion and guidance between 0.75-1mm

Question 11

How much prep is required for a functional cusp bevel

Answer 11

An additional 0.5mm at 45 degree angle

Question 12

What is the Palatal preparation of a gold 3/4 crown

Answer 12

0.5mm

Question 13

When placing grooves in gold Preps they need to be facing the opposite corner of the preparation. Why?

Answer 13

Add to resistance retention form