Dental Medicine Quiz

What is retention in complete denture defined as?

• Resistance to removal in the direction of insertion

• Resistance of tissue away from its foundation

• Resistance to removal in the opposite direction of insertion

• Resistance to vertical movement

Which factor is NOT considered a physical factor affecting denture retention?

• Saliva viscosity

• Cohesion

• Adhesion

• Psychological factors

What is the main difference between adhesion and cohesion in denture retention?

• Adhesion is an attraction between molecules, while cohesion is a repulsion force

• Adhesion is a physical factor, while cohesion is a physiological factor

• Adhesion is between similar molecules, while cohesion is between dissimilar molecules

• Adhesion occurs when saliva wets and sticks to the denture base, while cohesion occurs within the layer of saliva

Which factor does NOT affect the adhesion and cohesion in complete denture retention?

• Closeness of denture adaptation

• Surface area

• Shape of the arch

• Color of the denture base

What is the role of atmospheric pressure in denture retention?

• Creates a positive force to hold the denture in place

• Creates a negative force to dislodge the denture

• Has no effect on denture retention

• Increases the viscosity of saliva

Which anatomical factor is most favorable for denture retention and stability?

• U-shaped palatal vault

• V-shaped palatal vault

• Tapered arch form

• Flat palate

What is the main physiological factor that plays a role in denture retention?

• Mucosa thickness

• Arch size

• Acquired muscular control

• Saliva viscosity

Which mechanical factor contributes to denture stability?

• Direction of the occlusal plane

• Position of posterior teeth

• Shape of the polished denture surface

• Balanced occlusion

What is the purpose of using denture adhesives in denture retention?

• To reduce the salivary flow

• To improve the fit of the denture

• To increase the weight of the denture

• To enhance the viscosity of the fluid between denture and tissue

Which retention aid factor involves embedding metals into the denture to increase weight?

• Weighted denture

• Magnets

• Adhesives

• Spring