Saddles Connectors and Retainers Flashcards
1
Q
What are guide planes?
A
Two or more parallel axial surfaces on abutment teeth which can be used to limit path of insertion and improve stability of a partial denture
2
Q
How much is removed when guide planes are prepared?
A
3mm.
3
Q
What are the benefits of guide planes?
A
- Limit path of insertion.
- Increase stability.
- Better reciprocation.
- Better appearance.
- Prevent clasp deformation.
4
Q
What is the RPI system?
A
R: mesial REST seat
P: Distal guiding PLATE
I: I shaped retentive clasp.
5
Q
When is the RPI system used/ What is its purpose?
A
- Used in FREE END SADDLE situations.
- Aim to REDUCE THE STRESS PLACES ON THE ABUTMENT TOOTH WHEN THE DENTURE IS LOADED.
6
Q
What is the reciprocation to the clasp in the RPI system?
A
- Distal guiding plate + mesial rest and its minor connector
