Part 1

Question 1

Redness and soreness, limited to the crest of the edentulous ridge supporting a removable partial denture, are indicative of a____.

Answer 1

Centric prematurity

Question 2

In order to achieve optimum casting results in the metal ceramic technique, it is necessary to use a

Answer 2

Phosphate bonded investment

Question 3

In selecting anterior teeth for complete denture patients, one considers the patient’s:

Answer 3

Facial size, shape and form
Age
Sex
Physical features

Question 4

free way space is synonymous with

Answer 4

Interocclusal distance

Question 5

Effects of cooling the mixing slab prior to cementation include:

Answer 5

Increasing the amt of powder that can be incorporated into the mix.
Increasing the setting time in the mouth.

Question 6

Dental plaster powder differs from dental stone powder primarily in:

Answer 6

Physical nature of the particle

Question 7

After extractions and healing, the maxillary denture bearing area discloses bony undercuts in both tuberosity areas.
Usually, the best tx for this condition is to:

Answer 7

Surgically reduce the undercuts just enough to allow a path of insertion.

Question 8

To locate a hinge axis on a patient, one should use

Answer 8

a kinematic face bow

Question 9

The greatest cause of porosity in a porcelain jacket crown is

Answer 9

inadequate condensation of the porcelain

Question 10

To impart a softening heat treatment to a dental gold alloy, the best method would be

Answer 10

Quench the hot casting in cold water.

Question 11

A patient complains of pain when brushing a tooth which has a complete veneer cast gold crown.
The most probable cause of this pain is

Answer 11

Occlusal interference in centric and working relations

Question 12

The cast wrough combination clasp is desirable

Answer 12

because of its ability to flex in all directions

Question 13

This procedure must be executed in order to obtain the most accurate possible casts from alginate impression

Answer 13

Pour the impression immediately

Question 14

The MB cusp of mandibular left 1st molar is in deflective occlusal contact in centric occlusion but not in lateral excursions.
What might be spot ground to effect a balanced occlusion?

Answer 14

Marginal ridges of maxillary first molar and second premolar

Question 15

Selective grinding is a procedure used routinely

Answer 15

for final correction of any existing occlusal disharmony in dentures

Question 16

Elements contributing to a satisfactory bond between the casting and porcelain in the metal ceramic technique are

Answer 16

Fe, Sn, Au

Question 17

An advantage of a wide, thin palatal bar as compared with a narrow bar is that the wide bar

Answer 17

can be adequately rigid with less apparent bulk

Question 18

As compared with gold alloys, cobalt chromium casting alloys

Answer 18

melt at a higher temperature

Question 19

The physiologic rest position has practical significance during the evaluation if maxillomandibular relations, especially as related to

Answer 19

vertical dimension

Question 20

The dentist can best control the setting time of an irreversible hydrocolloid by altering the

Answer 20

temperature of the water

Question 21

Abutment teeth for RPD should be contoured so that the retentive clasp tips can be placed

Answer 21

on the gingival third of the crown

Question 22

The shape and amount of the DB extension of a complete mandibular edentulous impression is determined during border molding by the

Answer 22

position and action of the masseter muscle

Question 23

The most important consideration in checking custom trays for accurate muscle molding is

Answer 23

stability and lack of displacement

Question 24

When a px weearing CD makes a whistling sound while enunciating the S sound, it is caused by

Answer 24

the anterior teeth being placed too far labially

Question 25

A broken stress or non rigid type fixed bridge is indicated when

Answer 25

retainers cannot be prepared to draw together without excessive tooth reduction

Question 26

The Calcium sulfate type of investment for gold castings is not generally hearyed above 1300*F because

Answer 26

decomposition will cause corrosion of the gold

Question 27

Splinting adjacemt abutment teeth in FPD is performed primarily to

Answer 27

improve distribution of the occlusal load

Question 28

The greatest potential for wear exists between

Answer 28

porcelain and tooth

Question 29

Failure of partial dentures due to poor clasp design can best be avoided by

Answer 29

altering tooth contours

Question 30

The usual cause of contacting or clicking of posterior teeth when a px speak is

Answer 30

increased vertical dimension of occlusion

Question 31

Repeated fracture of a porcelain fused to metal restoration is due primarily to

Answer 31

an inadequately designed framework

Question 32

The type of load on teeth that is most destructive to the periodontium is the

Answer 32

Horizontal

Question 33

In lateral movements, the non working condyle moves in which direction?

Answer 33

Down, forward, medially

Question 34

The most likely tissue reaction to gross overextension of a CD that has been worn a long time is

Answer 34

Epulis Fissuratum

Question 35

The relationship of a denture base to bone that resists dislodgement of the denture in a horizontal direction.

Answer 35

Stability

Question 36

A px who wears CD is having trouble pronouncing the letter T.
This is probably caused by:

Answer 36

incorrect positioning of maxillary incisors

Question 37

In RPD design, guiding planes serve to

Answer 37

assure predictable clasp retention

Question 38

What is a vertical metal stop?

Answer 38

Indirect retainer

Question 39

major connectors of a maxillary RPD may be beaded to

Answer 39

produce a positive contact with the tissue

Question 40

Chroma is that aspect of color that indicates

Answer 40

degree of saturation of the hue

Question 41

For the best results when using an elastomeric impression material, the prepared tooth should be

Answer 41

free of surface moisture

Question 42

The DL extension of the mandibular impression for a CD is limited by the action of the

Answer 42

Superior constrictor muscle

Question 43

Proper lip support for a px with CD is provided primarily by the

Answer 43

facial surfaces of teeth and simulated attached gingiva

Question 44

In designing a retainer on a non carious mandibular first premolar abutment with a short clinical crown, a _____ restoration is most appropriate.

Answer 44

Full crown

Question 45

When a RPD is completely seated, the retentive terminals of the retentive arms should be

Answer 45

passive and applying no pressure on the teeth