Prosthodontics MCQs
MCQs on Complete Dentures : Impression Procedures MCQs _ Prosthodontics MCQs
MCQs on Complete Dentures : Impression Procedures MCQs _ Prosthodontics MCQs
- In making a final impression for a complete denture, the most important area of the impression is:
A. Ridge area of maxilla and buccal shelf of mandible
B. Lingual border area of mandible.
C. Junction of hard and soft palate of maxilla and distolingual area of the mandible
D. Mid palatal area of maxilla and ridge of the mandible - The primary stress bearing area of maxillary complete denture is:
A. Alveolar ridge.
B. Buccal flange.
C. Palate
D. Posterior palatal seal area - The mean denture bearing area of edentulous mandible and maxilla respectively is:
A. 14 cm2 and 24 cm2
B. 24 cm2 and 14 cm2
C. 14 mm2 and 24 mm2
D. 24 mm2 and 14 mm2 - While taking impression of flabby fibrous tissue on maxillary ridge of complete denture care is taken to:
A. Use a tray with spacer
B. Not maintain an intimate contact with tissues
C. Use a close fitting tray
D. Follow normal procedure - The stability of a mandibular complete denture will be enhanced when:
A. The level of occlusal plane is above the dorsum of the tongue
B. The tongue rests on the occlusal surface
C. The lingual contour of the denture is concave
D. The posterior teeth on the denture have a broad buccolingual width - The primary stress bearing area of mandibular complete denture is:
A. Buccal shelf
B. Crest of the ridge
C. Retromolar pad
D. Lingual flange - Retromolar pad:
A. Should not be covered by lower denture.
B. Should be covered by lower denture.
C. Has tendon of temporal muscle attached to it.
D. Disappears on eruption of mandibular last molars. - The main purpose of covering the Retromolar pad area is:
A. Stability.
B. Retention.
C. Support.
D. Contraction. - An important factor that aids in stability of complete denture is:
A. Harmonious occlusion.
B. Proper extension of denture bases.
C. Polishing of denture bases.
D. None of the above. - If a complete denture patient has genial tubercle at the level of the crest of mandibular ridge, the denture base:
A. Can cover them.
B. Should not cover them.
C. Should cover them and relief is a must.
D. Should cover them but relief is not necessary. - The masseteric notch in distobuccal corners of the mandibular denture is due to:
A. Action of buccinator on masseter.
B. Action of masseter on buccinator.
C. Action of palatoglossus on buccinator.
D. Action of superior constrictor on masseter. - Buccal shelf is a stress bearing area because:
A. It has cortical bone.
B. Buccinator fibers are parallel.
C. Mucosa is keratinized to the occlusal load.
D. All of the above. - Emergency retentive force is:
A. Atmospheric pressure.
B. Adhesion.
C . Cohesion.
D. Surface tension. - The following property of saliva affect denture retention:
A. none of the above.
B. quality of mixed saliva.
C. quality and quantity of serous and mucous saliva.
D. quantity on only serous saliva. - To make an impression of hyperplastic tissue, one should:
A. Use wax for impression.
B. Use specifically fitted tray.
C. Ensure intimate contact of impression material to the tissue.
D. Use elastomeric impressions to displace the tissues. - Vomiting during impression making procedures may be prevented by:
A. Changing the impression material.
B. Using topical anesthesia.
C. Asking patient not to eat prior to impression.
D. Sedating the patient. - Zinc oxide eugenol impression paste is used to enhance the quality of:
A. Reversible hydrocolloid impression.
B. Wax impression.
C. Alginate impressions.
D. Modelling compound impression. - The purpose of boxing an impression is:
A. To serve as a base for cast poured.
B. It preserves the border width after border molding.
C. Both a and b.
D. None of the above. - Denture bearing area of the ridge is:
A. Keratinized
B. None of the above
C. Non-keratinized
D. Para-keratenized - Which material is used in a custom tray?
A. Reversible hydrocolloid
B. Irreversible hydrocolloid
C. High fusing compound
D. Metallic oxide paste - How should the lingual extension of the mandibular impression be tested?
A. By functional movements of the tongue.
B. By rigorous extreme movements of the tongue.
C. By lateral and protrusive movement of the mandible.
D. By functional movements of the facial muscles. - Atmospheric pressure is a factor of retention is effective only:
A. If adequate peripheral seal is present.
B. If principle of mucostatic is present.
C. If saliva is present.
D. If good neuromuscular coordination is present. - Muscle which has influence in the formation of the buccal frenum of maxilla:
A. Quadratus labii superioris
B. Inferioris
C. Triangualris
D. Levator labii superioris - Selective pressure impression technique is indicated in:
A. Flabby ridge
B. When sharp bony spicules are present over the ridge
C. Firm, healthy mucosal covering over the ridge
D. Knife edge with movable mucosa - The thickness of the spacer used in special tray is:
A. 2.5 mm
B. 2.0 mm
C. 1.5 mm
D. 1.0 mm - The patient is asked to close the mouth forcefully while dentist apply pressure on lower anterior to record:
A. Buccal shelf
B. Retromylohyoid fossa
C. Masseteric notch
D. Lingual border
