Guiding Planes

Question 1

Guides the prosthesis to be placed & removed from the mouth:

Answer 1

Guiding planes

Question 2

Vertically parallel surfaces of abutment teeth oriented so as to contribute to the direction of the path of placement and dislodgment of removable partial dentures:

Answer 2

Guiding planes

Question 3

Guiding planes contribute to the ____ of the path of placement & dislodgment of removable partial dentures

Answer 3

Direction

Question 4

Do flat surfaces exist on natural teeth?

Answer 4

No- everything is rounded so you have undercuts

Question 5

_____ rarely exist naturally & typically always must be created to have the prosthesis fit in the mouth

Answer 5

Guiding planes

Question 6

Guiding planes provide for ___ of placement & removal

Answer 6

One path

Question 7

Guiding planes ensure the _______ of the RPD components

Answer 7

Intended actions

Question 8

Guiding planes eliminate/decreases _____

Answer 8

Gross food traps

Question 9

Guiding planes increase the:

Answer 9

Frictional component of minor connectors

Question 10

Guiding planes lower the _____ on _____ surfaces to allow better positioning of arms

Answer 10

Height of contour; proximal surfaces

Question 11

A large undercut adjacent to the proximal surface should be:

Answer 11

Reduced in size

Question 12

The reduction of a large undercut adjacent to the proximal surface should be reduced in size, and this is accomplished by:

Answer 12

1. altering the tilt of the cast
2. selective grinding of the enamel surface

Question 13

If you do too much reduction of the guiding plane this may cause:

Answer 13

Sensitivity

Question 14

Location of the guiding planes include:

1. ____ surface of abutment teeth
2. _____ to the long axis of teeth if possible

Answer 14

1. Proximal
2. Parallel

Question 15

When creating guiding planes, as length is increased, ______ is increase and _____ is increased

Answer 15

Frictional retention; resistance to rotation