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FACULTY OF DENTISTRY
DEPARTMENT OF PROSTHODONTICS
THE ARAB AMERICAN UNIVERSITY
FACULTY OF Dentistry
Course Name : Prosthodontics I (course No.08011341)
First Exam – DATE :22 /12/2013
ID: _____________________________________________________
Name: ___________________________________________________
Section: __________________________________________________
Notes:
 Turn off your mobile phone
 Time:
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 Use the space provided. In case you need more spaces; you could use the back
of the page.
 Answer all questions.
Best of Luck
Dr. Rola Shadid
AAO-P10-R01
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FACULTY OF DENTISTRY
DEPARTMENT OF PROSTHODONTICS
CHOOSE THE MOST CORRECT ANSWER FOR EACH OF THE FOLLOWINGS: (25 POINTS)
1. Which of the following materials could be used for bite registration?
a. Zinc oxide-eugenol
b. Quick setting plaster
c. Wax
d. polyvinylsiloxane
e. All of the above
2. If freeway space is obliterated with complete dentures, it would result
in trauma to the underlying ridges. While an excessive increase in
occlusal vertical dimension might cause gagging at denture insertion.
a. Both statements are correct
b. Statement 1 is correct. Statement 2 is incorrect
c. Statement 1 is incorrect. Statement 2 is correct
d. Both statements are incorrect
3. The posterior border of maxillary complete denture usually ends at
the junction of hard and soft palates, and it should be located 2 mm
posterior to the fovea palatine.
a. Both statements are correct
b. Statement 1 is correct. Statement 2 is incorrect
c. Statement 1 is incorrect. Statement 2 is correct
d. Both statements are incorrect
4. According to House’s classification of denture patients, the patient
who likes each step in detail and makes alternative treatment for
dentist is the exacting patient; while the patient that you should avoid
making immediate dentures with is the indifferent.
a. Both statements are correct
b. Statement 1 is correct. Statement 2 is incorrect
c. Statement 1 is incorrect. Statement 2 is correct
d. Both statements are incorrect
5. In an ideal ( Class I ) cusp-fossa relationship, the mesio-palatal cusp of
the maxillary 1st molar opposes the central fossa of the mandibular 1st
molar; while the mesio-buccal cusp tip of the mandibulat 1st molar
opposes the interproximal marginal ridge area between the maxillary
1st molar and 2nd molar.
a. Both statements are correct
b. Statement 1 is correct. Statement 2 is incorrect
c. Statement 1 is incorrect. Statement 2 is correct
d. Both statements are incorrect
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FACULTY OF DENTISTRY
DEPARTMENT OF PROSTHODONTICS
6. The physiologic rest position of the mandible is the vertical and
horizontal position the mandible assumes when the mandibular
musculature is relaxed and the patient is in upright position. The
vertical dimension at rest is reduced by pain, drugs such as adrenaline
and caffeine, and emotional stress.
a.
b.
c.
d.
Both statements are correct
Statement 1 is correct. Statement 2 is incorrect
Statement 1 is incorrect. Statement 2 is correct
Both statements are incorrect
7. The landmarks that could be used for determining the occlusal plane
of complete dentures are all of the followings, EXCEPT:
a. Right and left maxillary tuberosities
b. Right and left retromolar pads
c. Stensen’s duct
d. Camper’s line
e. None of the above
8.
1)
2)
3)
4)
5)
Occlusion rims are used for:
determination of lip support
determination of the plane of occlusion
selection of teeth size and position
establishing the contour of the polished surface
recording jaw relation
a. 1 only
b. 1,3,4
c. 4,5
d. 1,2,3,4,5
9. Which of the following is defined as “the property which resists
vertical movement or displacement of the denture toward basal seat
area”?
a.
Retention
b. Support
c. Stability
d. Adhesion
e. Interfacial surface tension
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FACULTY OF DENTISTRY
DEPARTMENT OF PROSTHODONTICS
10. The muscle that will dislodge the mandibular complete denture if it
has an overextended distobuccal flange is the masseter. The distal
extent of the lingual flange of a mandibular complete denture is
limited primarily by the superior constrictor muscle.
a. Both statements are correct
b. Statement 1 is correct. Statement 2 is incorrect
c. Statement 1 is incorrect. Statement 2 is correct
d. Both statements are incorrect
11. Centric relation position of the mandible that is a “tooth-guided”
position, is recordable and reproducible over a period of time. It is
used when the entire occlusion is being restored (i.e. no remaining
posterior centric stops).
a.
b.
c.
d.
Both statements are correct
Statement 1 is correct. Statement 2 is incorrect
Statement 1 is incorrect. Statement 2 is correct
Both statements are incorrect
12. Regarding complete denture retention, the interfacial surface tension
is maximized as a factor in complete denture retention when the
intervening saliva film between the denture base and the mucosal
tissues becomes very thin. While the excessive viscosity of saliva
results in decrease of retention.
a.
b.
c.
d.
Both statements are correct
Statement 1 is correct. Statement 2 is incorrect
Statement 1 is incorrect. Statement 2 is correct
Both statements are incorrect
13. Lingual flange in the molar region of complete denture is determined
by:
a. Digastric muscle
b. Superior constrictor muscle
c. Mylohyoid muscle
d. Genioglossus muscle
e. Lateral pterygoid muscle
14. The primary stress bearing area for the mandibular complete denture
is the:
a. retromylohyoid area
b. external oblique ridge
c. retromolar pads
d. mylohyoid ridge
e. none of the above
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FACULTY OF DENTISTRY
DEPARTMENT OF PROSTHODONTICS
15. All of the followings are physical forces for complete denture
retention, EXCEPT:
a. Adhesion/cohesion
b. Interfacial surface tension
c. Atmospheric pressure
d. Gravity
e. Mucosal inserts
16. Which of the following structures can help in determining the midline
while setting upper anterior teeth?
a. Fovea palatinea
b. Incisive papilla
c. Rugae
d. Nasolabial fold
17. Increase in the freeway space beyond physiologic limits results in:
a. Cheek biting
b. Strained appearance of the face
c. Trauma to the residual ridge
d. Palatine papillary hyperplasia
18. The lingual flange of mandibular complete denture in molar region
should extend inferior to mylohyoid line and slope toward the body of
the mandible. The maxillary dentures will always be narrowest in the
anterior labial region.
a. Both statements are correct
b. Statement 1 is correct. Statement 2 is incorrect
c. Statement 1 is incorrect. Statement 2 is correct
d. Both statements are incorrect
19. Which cusp on permanent maxillary molars generally is the one that
gets progressively smaller as you go posterior in the arch?
a. Mesiobuccal
b. Distobuccal
c. Mesiolingual
d. Distolingual
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FACULTY OF DENTISTRY
DEPARTMENT OF PROSTHODONTICS
20. A maxillary right canine may be distinguished from a maxillary left
canine because:
a. The root always curves to the distal in the apical one-third
b. The distal half of the canine shows more convexity than the
mesial half
c. Labially, the cusp tip is placed distal to a line which biscets
the crown and root
d. Lingually, the cervical line slopes mesially
21. A patient with a paralyzed right lateral pterygoid muscle is instructed
to open his mouth wide, which direction will the mandible deviate to
upon opening?
a. To the right
b. To the left
c. It will not deviate to right or left
d. None of the above
22. Which of the followings is/are CORRECT concerning the Kelly’s
syndrome?
1. Occurs when a maxillary denture is worn opposing natural
mandibular anterior teeth and a distal extension partial denture.
2. The maxillary anterior ridge becomes hyperplastic and flappy
3. Epulis fissuratum may form in maxillary labial sulcus
4. Supraeruption of mandibualr anterior teeth occurs
5. Enlargement of maxillary tuberosities occurs
6. The maxillary occlusal plane drops anteriorly and rises posteriorly
a. 1,2,4,6
b. 1,2,3,5
c. 1,2,3,4,5
d. 1,2,3,4,5,6
23. Support is defined as the quality inherent in the dental prosthesis
acting to resist the forces of dislodgment along the path of placement.
The vertical space between the incisal and occlusal surfaces of the
maxillary and mandibular teeth with the mandible in the physiologic
rest position is called the freeway space.
a. Both statements are correct
b. Statement 1 is correct. Statement 2 is incorrect
c. Statement 1 is incorrect. Statement 2 is correct
d. Both statements are incorrect
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FACULTY OF DENTISTRY
DEPARTMENT OF PROSTHODONTICS
24. The parotid duct opens on the oral surface of the cheek through a
small opening opposite the maxillary second molar. This duct can be
used as a guide for determining the level of posterior occlusal plane.
a. Both statements are correct
b. Statement 1 is correct. Statement 2 is incorrect
c. Statement 1 is incorrect. Statement 2 is correct
d. Both statements are incorrect
25. Which of the followings is INCORRECT regarding CD custom tray
fabrication?
a. Acrylic resin and similar materials (such as light cure resins)
should be about 2 mm thick
b. The amount of space provided in the tray for impression is
dependent on the presence of tissue undercuts and the
impression material used
c. The custom tray material should be sufficiently rigid to
minimize impression material distortion
d. None of the above
Dr. Rola Shadid
AAO-P10-R01
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29/5/2013
Course Name (Course No.08011341)
7/7