Old Exam Questions

Question 1

Which of the following are done last?

a) framework try in
b) create rests
c) CR record
d) altered cast

Answer 1

d) altered cast

Question 2

How far distally should the denture base extend in a class 1 distal extension case?

Answer 2

2/3 of the retromolar pad

Question 3

How far distally should the retention extend for a distal extension case?

Answer 3

Extends to 2/3 from the guide plate to 2/3 of the retromolar pad

Question 4

Which of the following is the hardest to obtain with a distal extension case?

Answer 4

VDO record

Question 5

What is the definition of a cast stop?

Answer 5

Essential to prevent displacement or deformation of the metal framework using resin-packing procedures

Question 6

Wax patterns are made on the:

Answer 6

refractory cast

Question 7

What is the definition of support for direct retainers?

Answer 7

Resist vertical movement toward the soft tissues

Question 8

Which of the following is true?

a) the completed RPD must be passive
b) should not exert forces on the teeth or soft tissues
c) the tip of each retentive clasp should lie passively in a measured undercut
d) a&b
e) all of the above

Answer 8

e) all of the above

Question 9

T/F: Class I lever is ideal. RPI is an example of a class I lever

Answer 9

False (both)

Question 10

Wrought wire needs an elongation factor of:

Answer 10

more than 6%

Question 11

What are the causes of cheek biting?

Answer 11

1. lack of horizontal overlap
2. mandibular teeth located too far buccal

Question 12

Which of the following does not call for a rebase?

Answer 12

Dentition or moveable

Question 13

anterior guidance means:

Answer 13

the anterior teeth disclude the posterior teeth when the mandible moves in protrusion

Question 14

Which of the following are involved in SUPPORT?

a) rest
b) major connector
c) denture base
d) all of the above

Answer 14

d) all of the above

Question 15

Which of the following is most commonly used to make denture bases?

Answer 15

PMMA

Question 16

Which of the following is true above PIP?

a) PIP means pink indicating paste
b) should be put on cameo surfaces
c) should be put in great amounts
d) should be put on in brush strokes

Answer 16

d) should be put on in brush strokes

Question 17

If clasps are tight on a class III with circumferential clasp, use what to adjust?

a) 139 pliers
b) hemostat
c) 200
d) remake

Answer 17

a) 139

Question 18

The surveyor is used for:

a) undercuts
b) interferences
c) path of draw
d) all of the above

Answer 18

d) all of the above

Question 19

If there isn’t a lot of interarch space, what is used for the denture base?

Answer 19

metal

Question 20

T/F: All distal extension cases require clinical remount. All class III might require clinical remount.

Answer 20

First- true
Second-false

Question 21

Chromium-Cobalt (Cr-Co) shrinks:

Answer 21

2.2-2.4%

Question 22

Which occurs last?

a) altered cast technique
b) CR record
c) framework fabrication
d) rest created

Answer 22

a) altered cast technique

Question 23

What do you need for a clinical remount?

Answer 23

Interocclusal record

Question 24

Which of the following would NOT be an advantage of Chromium-Cobalt alloys?

a) low density (weight)
b) high modulus of elasticity (stiffness)
c) low material cost
d) resistance to tarnish
e) increased flexibility

Answer 24

e) increased flexibility

Question 25

Kelly’s combination syndrome would present as all except:

a) lack of osseous tissue in the anterior maxilla
b) loose tissue in the posterior maxilla
c) intrusion of the mandibular anteriors
d) cystic palatine nerve

Answer 25

loos tissue in the posterior maxilla

Question 26

Patients wearing a complete maxillary denture opposing a mandibular distal extension prosthesis:

Answer 26

Kelly’s combination syndrome

Question 27

The characteristics associated with Kelly’s combination syndrome:

Answer 27

1. bone loss in the pre-maxilla
2. dropping of the posterior maxilla (tuberosities)
3. extrusion of the lower anterior teeth
4. posterior bone loss in mandible under RPD
5. papillary hyperplasia of the maxilla
6. decreased OVD
7. facial asthetics often altered dramatically (cystic palatine nerve)

Question 28

T/F: Guide plane should be 1/2 distance between cusp tips; Guide plane is as wide as rest:

Answer 28

True- both

Question 29

T/F: Gingival margin to superior border of lingual bar is 3-4mm; Measure the distance on the cast.

Answer 29

First-true
Second-false (measurements should be taken in mouth)

Question 30

Beaded border depth:

Answer 30

1 mm

Question 31

If you have a large inoperable tori, you need to use:

Answer 31

horseshoe

Question 32

I-bar with distal extension does NOT use:

Answer 32

DF undercut

Question 33

Papillary hyperplasia is all EXCEPT:

Answer 33

Destructive bone disease

Question 34

T/F: Cingulum rest is placed between incisal & middle 1/3 of incisors:

Answer 34

False

Question 35

A positive rest is used for a cingulum rest is used because:

Answer 35

it prevents lateral movement

Question 36

A surveyed crown is indicated when:

a) the survey line is in the gingival 1/3
b) no undercuts exist on abutment teeth
c) with the help of enameloplasty, one cannot have the changes necessary for the abutment teeth without cutting into the dentin
d) all of the above

Answer 36

d) all of the above

Question 37

Indirect retainers have all of the following characteristics except:

Answer 37

A DO rest on the posterior abutment

Question 38

Hyperplastic tissue should be removed prior to construction of your RPD to:

Answer 38

provide a firm stable base for the denture

Question 39

Internal surface of RPD should be at:

Answer 39

90 degrees (butt joint)

Question 40

Tooth contouring (i.e. survey lines) should be done ____ the surgery crown is made

Answer 40

before

Question 41

Why do we tripodize the cast?

Answer 41

To be able to recreate the path of insertion

Question 42

Gagging occurs due to:

a) decreased VDO
b) faulty impression
c) overextension
d) all of the above

Answer 42

d) all of the above

Question 43

What gets removed during the altered cast technique?

Answer 43

distal extensions

Question 44

You can determine if you need to reline if:

Answer 44

the indirect retainer doesn’t contact the tooth when you push on the distal extensions