Retention And Stability Of Complete Dentures Flashcards
1
Q
Define retention
A
Resistance of a denture to movement away from tissue
2
Q
Define stability
A
Resistance of denture to displacement by functional forces in horizontal direction
3
Q
What is adhesion?
A
Physical attraction of unlike molecules for each other
4
Q
What is cohesion
A
Physical attraction between similar molecules
5
Q
What is important for ensuring maxillary and mandibular retention with regards to the fitting surface.
A
Post dam seal on maxilla
Extending into retromylohyoid fossa (lingual pouch) for mandible
On both, engaging any soft tissue undercuts, so good surface dental must be captured
6
Q
What can make retention difficult?
A
Atrophic ridges
Incomplete palate
Fibrous (mobile) ridge
Damaged alveolar bone
Gagging
Insufficient saliva
Lingual overhangs of teeth
