Retention and Stability of Complete Dentures Flashcards
What are examples of displacing forces that are applied to dentures?
- gravity
- muscle activity
- sticky foods
- function
What is meant by adhesion? give an example relevant to dentistry:
the physical attraction of unlike molecules for each other
- saliva & denture base
- saliva & mucous membrane
What is meant by cohesion?
the physical attraction between similar molecules
How does atmospheric pressure relate to dentures?
Difference between outside of denture & underside of denture
- importance of border seal
what factors can make retention and stability of a complete denture difficult?
- atrophic ridges
- patients with incomplete palate
- mobile soft tissue/flabby ridge
- damaged alveolar ridge
- excessive gag reflex
- cobalt chromium base plate
- insufficient saliva
where do you want teeth to lie on a denture?
Over the residual ridge (neutral zone)
- area of minimal activity between tongue and cheek
A lower denture appears to be unstable when the patient talks, what may the cause of this be?
lingual overhang
What could you give to a patient to help with retention & stability of a denture?
denture adhesive
How do we ensure we have good adaptation of a complete denture?
Ensure we take good impressions
