6. Retention of a denture depends on:
A. Peripheral seal
B. Eye color
C. Dentist nationality
D. Tooth size only
Answer: A
7. Adhesion refers to:
A. Attraction between saliva molecules
B. Attraction between denture and saliva
C. Mechanical locking
D. Muscle activity
Answer: B
8. Cohesion is:
A. Attraction between unlike molecules
B. Attraction between saliva molecules
C. Atmospheric pressure
D. Tissue rebound
Answer: B
9. Mechanical interlock is related to:
A. Smooth surfaces
B. Undercuts
C. Saliva viscosity
D. Denture weight
Answer: B
10. Which factor greatly influences denture retention?
A. Eye color
B. Muscle control
C. Hair type
D. Height
Answer: B
11. The mandibular basal seat differs from the maxillary because of:
A. Color
B. Size and form
C. Taste
D. Temperature
Answer: B
12. The tongue complicates impressions for:
A. Maxillary denture
B. Mandibular denture
C. Partial denture
D. Fixed prosthesis
Answer: B
13. Support area for edentulous mandible is approximately:
A. 24 cm²
B. 30 cm²
C. 14 cm²
D. 10 cm²
Answer: C
14. Support area for edentulous maxilla is approximately:
A. 14 cm²
B. 24 cm²
C. 10 cm²
D. 40 cm²
Answer: B
15. The main support for mandibular denture comes from:
A. Tongue
B. Body of mandible
C. Lips
D. Cheeks
Answer: B
16. Mucostatic impression technique records tissues:
A. Under pressure
B. At rest
C. During chewing
D. During speech
Answer: B
17. Border molding in mucostatic technique is:
A. Essential
B. Not done
C. Done twice
D. Done with wax only
Answer: B
18. Mucostatic technique uses material with:
A. High viscosity
B. Low viscosity
C. Hard consistency
D. Metal base
Answer: B
19. A disadvantage of mucostatic technique is:
A. Good retention
B. Poor peripheral seal
C. Tissue damage
D. Overcompression
Answer: B
20. Mucocompressive technique records tissues:
A. At rest
B. Without tray
C. Under functional pressure
D. Digitally
Answer: C
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