Intro Flashcards
The amount of mechanical stimulus the tissue can withstand before it gets traumatized.
Physiologic Tolerance
These RPD components resist horizontal movement.
Minor connectors and reciprocal clasps.
Where do you want to transfer the forces on an abutment tooth?
As close to the center of the tooth and the horizontal axis of rotation.
How far should the terminal 1/3 of the retentive clasp be from the gingival margin?
1.5-2 mm
The axis of rotation of a tooth is located where?
Center of the root.
This component of the partial:
- Unifies all the parts of the framework.
- Distributes the forces throughout the arch, to the selected teeth and tissue.
- Minimizes the torque to individual teeth.
Major connector
The major connector must have this quality in order to transfer forces throughout the mouth.
Rigidity
This RPD component is rigid to provide cross-arch stability through the principle of broad distribution of stress, and covers no more tissue than is absolutely necessary.
Major connector
This component of the RPD passes VERTICALLY from the major connector.
Minor connector
Main goal of a rest.
Provide VERTICAL SUPPORT for the RPD.
Provides AXIAL loading of the abutment teeth.
Rests
6 things a clasp assembly MUST have:
1) Retention
2) Support
3) Stability
4) Reciprocation
5) Encirclement
6) Passivity
Active components don’t put any force on the tooth when you insert the RPD. What is this called?
Passivity.
Forms of indirect retention
Rests
Proximal Plates
Minor connectors
The ______ the indirect retainer is from the fulcrum, the more ________ it should control movement.
farther; efficiently
