FACULTYOF DENTISTRY

DEPARTMENT OF PROSTHODONTICS

The ArabAmericanUniversity

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:

Enquiries are only allowed during the first (15) minutes of exam time

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

Choose the most correct answer for each of the followings: (25 Points)

  1. Which of the following materials could be used for bite registration?
  2. Zinc oxide-eugenol
  3. Quick setting plaster
  4. Wax
  5. polyvinylsiloxane
  6. All of the above
  1. 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.
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. 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.
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. 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.
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. 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.
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. 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.
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. The landmarks that could be used for determining the occlusal plane of complete dentures are all of the followings, EXCEPT:
  2. Right and left maxillary tuberosities
  3. Right and left retromolar pads
  4. Stensen’s duct
  5. Camper’s line
  6. None of the above
  1. Occlusion rims are used for:

1)determination of lip support

2)determination of the plane of occlusion

3)selection of teeth size and position

4)establishing the contour of the polished surface

5)recording jaw relation

  1. 1 only
  2. 1,3,4
  3. 4,5
  4. 1,2,3,4,5
  1. Which of the following is defined as “the property which resists vertical movement or displacement of the denture toward basal seat area”?
  2. Retention
  3. Support
  4. Stability
  5. Adhesion
  6. Interfacial surface tension
  1. 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.
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. 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).
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. 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.
  1. Both statements are correct
  2. Statement 1 is correct. Statement 2 is incorrect
  3. Statement 1 is incorrect. Statement 2 is correct
  4. Both statements are incorrect
  1. Lingual flange in the molar region of complete denture is determined by:
  2. Digastric muscle
  3. Superior constrictor muscle
  4. Mylohyoid muscle
  5. Genioglossus muscle
  6. Lateral pterygoid muscle
  7. 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

  1. All of the followings are physical forces for complete denture retention, EXCEPT:
  2. Adhesion/cohesion
  3. Interfacial surface tension
  4. Atmospheric pressure
  5. Gravity
  6. Mucosal inserts
  1. Which of the following structures can help in determining the midline while setting upper anterior teeth?
  1. Fovea palatinea
  2. Incisive papilla
  3. Rugae
  4. Nasolabial fold
  1. Increase in the freeway space beyond physiologic limits results in:
  1. Cheek biting
  2. Strained appearance of the face
  3. Trauma to the residual ridge
  4. Palatine papillary hyperplasia
  1. 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.
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. Which cusp on permanent maxillary molars generally is the one that gets progressively smaller as you go posterior in the arch?
  2. Mesiobuccal
  3. Distobuccal
  4. Mesiolingual
  5. Distolingual
  1. A maxillary right canine may be distinguished from a maxillary left canine because:
  2. The root always curves to the distal in the apical one-third
  3. The distal half of the canine shows more convexity than the mesial half
  4. Labially, the cusp tip is placed distal to a line which biscets the crown and root
  5. Lingually, the cervical line slopes mesially
  1. 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?
  2. To the right
  3. To the left
  4. It will not deviate to right or left
  5. None of the above
  1. Which of the followings is/are CORRECT concerning the Kelly’s syndrome?
  2. Occurs when a maxillary denture is worn opposing natural mandibular anterior teeth and a distal extension partial denture.
  3. The maxillary anterior ridge becomes hyperplastic and flappy
  4. Epulis fissuratum may form in maxillary labial sulcus
  5. Supraeruption of mandibualr anterior teeth occurs
  6. Enlargement of maxillary tuberosities occurs
  7. The maxillary occlusal plane drops anteriorly and rises posteriorly
  8. 1,2,4,6
  9. 1,2,3,5
  10. 1,2,3,4,5
  11. 1,2,3,4,5,6
  1. 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.
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. 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.
  2. Both statements are correct
  3. Statement 1 is correct. Statement 2 is incorrect
  4. Statement 1 is incorrect. Statement 2 is correct
  5. Both statements are incorrect
  1. Which of the followings is INCORRECT regarding CD custom tray fabrication?
  2. Acrylic resin and similar materials (such as light cure resins) should be about 2 mm thick
  3. The amount of space provided in the tray for impression is dependent on the presence of tissue undercuts and the impression material used
  4. The custom tray material should be sufficiently rigid to minimize impression material distortion
  5. None of the above

Dr. Rola Shadid

AAO-P10-R01 / 1 / 29/5/2013

Course Name (Course No.08011341)1/7