20 Questions
What factor is directly proportional to the surface area covered for maxillary denture retention?
Adhesion
Which anatomical factor enhances retention by permitting excellent peripheral seal for the lower denture?
Tongue size
What is considered retentive to the lower denture and displacing to the upper denture?
Gravity
What is the potential space where forces from the lips & cheeks on one side are neutralized by those of the tongue on the other side?
Neutral zone
What surgical procedure involves deepening of the vestibule to gain ridge height?
Vestibuloplasty
What psychological factor influences the ability of some patients to cope and use the denture?
Acquired muscle control - adaptation
What is the first factor to consider for a denture to be stable?
Retention
What type of palate provides the most favorable retention and stability for dentures?
U-shaped palate
What action is known as 'lever balance' in denture stability?
Inclined plane action
What factor decreases the amount of load falling on the denture by having a width less than the natural?
Width of the occlusal table
What is the definition of retention in dentistry?
The ability of the denture to resist vertical tissue away movement
What is the definition of stability in dentistry?
The quality of the denture to be firm and steady when functional forces are applied
Which factor affects retention due to capillary attraction?
Interfacial surface tension
What is the role of atmospheric pressure in denture retention?
Forms a partial vacuum between the mucosa and the denture
What is the main factor contributing to adhesion in denture retention?
Physical attraction between unlike molecules (Denture-saliva-mucosa)
What is the result of interfacial surface tension between well-adapted surfaces?
Resistance to separation
How does capillary attraction affect denture retention?
The space filled with a thin film of saliva acts like a capillary tube and retains the denture
What is the role of viscosity in denture retention?
Affects the ability of the fluid to wet surrounding surfaces
What is the effect of gravity on denture retention?
Impacts the degree of adaptation between the denture base and the mucosa
Which factor contributes to the formation of a partial vacuum between the mucosa and the denture?
Atmospheric pressure
Test your knowledge of denture retention and stability with this quiz. Explore biological, physical, and mechanical factors that affect denture stability and retention, and understand the importance of psychological comfort and physiological support in denture design.
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