MCQ on anatomical landmark considerations of arches in removable prosthodontics
1. Denture bearing area of the ridge is
a)
Nonkeratinised
b) Keratinized
c)
Parakeratinised
d) None of
the above
2. Primary stress bearing area in maxillary complete denture is
a) Anterior
palate
b) Buccal
sulcus areas
c)
Edentulous ridges
d) Posterior
palatal area
3. Muscle which has influence on the formation of buccal frenum of maxilla
a) Levator
anguli oris
b) Quadratus
labii superioris
c)
Triangularis
d) Inferiors
4. The correctly placed posterior palatal seal (PPS)creates
a) Vacuum in
posterior part of palate
b) Vacuum
beneath the maxillary denture
c) Partial
vacuum beneath the maxillary denture
d) A close
adaptation of maxillary denture at tuberosity
5. Incorporation of peripheral seal in an impression is necessary to obtain
a) Stability
b)
Functionally moulded periphery
c)
Harmonious occlusion
d) Posterior
palatal seal
6. The distal palatal termination of the complete denture is dictated by the
a)
Tuberosity
b) Vibrating
line
c) Fovea
palatine
d) Maxillary
tori
7. Distal end of the complete denture should be
a) On the
vibrating line
b) 1-2 mm
posterior to vibrating line
c) 1-2 mm
anterior to the vibrating line
d) Should be
always on the hard palate
8. The anatomic landmarks used to establish the posterior extent of the upper complete denture
a)
Pterygomaxillary notch and fovea palatine
b)
Pterygopalatine fissure and anterior border of the tuberosity
c) Posterior
nasal spine and the palatine bone
d) Posterior
nasal spine and the posterior border of the tuberosity
9. Fovea palatine are situated in
a) Hard
palate
b) Soft
palate
c) At the
junction of hard and soft palate
d) Their
position is not fixed
10. Vibrating line is on the
a) Hard
palate
b) Junction
of hard and soft palate
c) Soft
palate and palatine muscle
d) Junction
of muscularis uvulae
11. When determining the posterior limit of the maxillary denture, which of the following is on the posterior border
a) Hamular
notch
b) Fovea
palatine
c) Vibrating
line
d) Hamular
process
12. Instructing the patient to say "ah" with short vigorous bursts will help in visualizing
a) Soft
palate
b) Posterior
vibrating line
c) Anterior
vibrating line
d) Junction
of hard and soft palate
13. The posterior palatal seal for a maxillary complete denture
a) Is placed
immediately posterior to the vibrating line
b) is placed
immediately anterior to the vibrating line
c) Is not
necessary if a metal base is made
d) Will vary
in outline and depth according to the palatal form
14. Which of the following is favourable throat form for the success of a denture
a) High soft
palate, with less compressibility extending 5-10 mm
b) High soft
palate, with more compressibility extending 2 mm
c)
Square-shaped soft palate with more compressibility extending 5-10 mm
d)
'V'-shaped soft palate with more compressibility extending 2 mm
15. Broad palatal seal indicates
a) Type A
palatal form
c) Type C
palatal form
b) Type B
palatal form
d) None of
the above
16. If palatal seal is placed too deep, it may result in
a) Improper
phonetics
b) Gagging
sensation
c) improper
seating of the denture
d) Retention
increases with depth
17. Postdam area serves mainly to
a) Prevent
ingress of food and saliva beneath denture base
b)
Preventing lifting away of denture during incising
c) Stabilize
the denture
d) All of
the above
e) Both A
& B
18. All of the following landmarks are included while making a postdam for maxillary arch except
a)
Pterygomaxillary notch
b) Hamular
process
c) Fovea
palatina
d) Vibrating
line
19. The physiological method of recording posterior palatal seal area is
a)
Conventional approach
b) Fluid wax
technique
c) Arbitrary
scraping of the master cast
d) Extended
palatal technique
20. The maximum depression of the soft palate is recorded when the Frankfort horizontal
a) 30° below
the horizontal plane
b) 10° below
the horizontal plane
c) 60° below
the horizontal plane
d) 80° below
the horizontal plane
21. Advantage of using fluid wax impression technique to record PPS is
a) Less time
is required during impression appointment
b) Ease of
handling materials
c)
Overcompression of tissues avoided
d) it is a
functional technique
22. Which of the following is not a mouth temperature waxes
a) Adaptol
b) Korrecta
type 1
c) HL
physiologic paste
d) IOWA wax
23. The mean denture bearing area in the edentulous mandible is approximately
a) 12.25 cm2
b) 16.25 cm?
c) 18.12 cm
d) 20.25 cm
24. Primary stress bearing area in mandibular edentulous ridge is
a) Buccal
shelf
b) Crest of
the ridge
c)
Retromolar pad
d) Lingual
flange
25. The secondary peripheral seal in mandibular denture is provided by
a) Buccal
shelf
b) Anterior
lingual border
c)
Retromolar pad
d) Crest of
the ridge
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