Kennedy | and || design Flashcards
What happens when you cover lots of tissue?
- You get support but you should be careful not to cause tissue damage
Consequences of reduced mandibular support
- trauma to denture bearing tissues
- bone resorption
- instability of denture
How do you reduce loading to the tissues of the denture bearing area?
Use the fewest number of denture teeth
How do you achieve optimum mucosal support ?
- Cover the maximum area with the denture saddle
- extend the saddle onto areas that are best able to take loading
Good load bearing area ?
Buccal shelf area of the mandibular ridge
Besides soft tissues where can you get support?
natural teeth
Name some problems with tooth/ mucosal supported dentures
instability on occlusal loading
What is the altered cast technique?
special impression technique for free end saddle partial dentures
Which type of denture is an altered cast technique used on?
Lower bilateral free end saddle chrome dentures - lower kennedy class | CoCr dentures
An alternative to the altered cast technique
Stress Breaker Denture
The properties of a stress breaker denture
Allows movement in the saddle area - flexibility
What is resistance?
resistance of a denture from moving vertically from the tissues - it holds the denture in place
How do we achieve optimum retention?
- Plan the path of insertion to avoid unwanted undercuts
- Effective use of clasps
What is the RPI system?
- A specific design used for abutment teeth adjacent to free end saddles (kennedy |)
- There is a mesial rest, distal plate and an I bar
What is stability?
The resistance of a denture to displacement by functional forces
