PROSTHETIC DENTISTRY

Question 1

It refers to the saturation of hue

Answer 1

Chroma

Question 2

The face-bow is used to record

Answer 2

Relation of the maxilla to the TMJ

Question 3

This is the primary stress-bearing area of the mandibular edentulous jaw and should always be covered by the denture base

Answer 3

Buccal shelf

Question 4

A dentist primarily splints adjacent abutment teeth in a fixed partial denture in order to:

Answer 4

Improve the distribution of the occlusal load.

Question 5

To disinfect casts, it can be immersed in a solution of sodium hypochlorite for ___ or disinfected with iodophor spray.

Answer 5

30 minutes.

Question 6

901 bur is known as

Answer 6

End cutting

Question 7

Which of the following will retard the setting time of polyvinyl siloxane

Answer 7

Sulfur in latex

Question 8

Which of the following adverse conditions may arise if occlusal vertical dimension is increased.

Answer 8

The closing muscles may become strained.

Question 9

A type of articulator wherein the condylar elements are on the lower member of the articulator, while the mechanical fossae are placed on the upper member.

Answer 9

Class III arcon articulator

Question 10

Reversible hydrocolloids exhibit the property of transformation from sol to gel and gel to sol as a function of the ___.

Answer 10

Temperature

Question 11

In arranging teeth for balanced occlusion, increasing the incisal guidance.

Answer 11

Increase the compensating curve.

Question 12

When disinfecting an alginate impression, it should be rinsed and disinfected with ___ before pouring.

Answer 12

Glutaraldehyde or Iodophor

Question 13

The cast-wrought combination clasp is desirable

Answer 13

Because of its ability to flex in all directions.

Question 14

ADA specification number of inlay wax.

Answer 14

4

Question 15

It is the filter content of alginate or irreversible hydrocolloids.

Answer 15

Silica

Question 16

Flexible dentures are made of:

Answer 16

Nylon

Question 17

F,V or PH are classified as __ sounds

Answer 17

Labiodental

Question 18

In the oral examination of a complete denture patient, why should the saliva be evaluated?

Answer 18

-A thin watery saliva does not afford lubricating protection for the mucosa
-A thick ropy saliva interferes with obtaining an adequate impression.
-Xerostomia hinders adhesion and produces poor retention.

Question 19

Resistance of a denture to movement on its tissue foundation, especially to lateral or horizontal forces. This is a definition of:

Answer 19

Stability

Question 20

Three weeks after insertion of a fixed bridge, marked discomfort to heat and cold. The most likely cause is:

Answer 20

Deflective occlusal contact

Question 21

When setting maxillary anterior teeth for complete dentures, the ideal location of the artificial teeth is:

Answer 21

Anterior to the ridge

Question 22

These materials are also known as light-cured glass ionomer cements.

Answer 22

RMGI

Question 23

The phenomenon where porcelain appears different under varying light condition is:

Answer 23

Metamerism

Question 24

Guide plane are created:

Answer 24

Before rest seat preparation.

Question 25

This is a fluoride-releasing cement that is also considered as the first tooth-colored restoration.

Answer 25

Silicate cement

Question 26

A supporting element of an RPD framework that prevents the vertical displacement of the denture in a gingival direction.

Answer 26

Rests.

Question 27

After a patient moves his mandible in a right lateral excursion movement, the non-working condyle will move

Answer 27

Downward, forward and medial

Question 28

Dental plaster differ from dental stone primarily in __.

Answer 28

Physical nature of the particles

Question 29

Excessive vertical dimension may result to which of the following?

Answer 29

Excessive trauma to the underlying tissues

Question 30

If one is fabricating 2 casted restorations, what would be the difference if one is made up of base metal alloy, while the other is made up of noble metal alloy?

Answer 30

Noble alloys do not oxidize on casting

Question 31

Polymer monomer ratio by volume.

Answer 31

3:1

Question 32

Bilabial sounds are __.

Answer 32

B,P,M

Question 33

The most dimensionally stable impression material is:

Answer 33

A-silicones

Question 34

It refers to the attraction of different molecules of different substances.

Answer 34

Adhesion

Question 35

The posterior occlusal plane is determined on an occlusion rim by paralleling the rim with the

Answer 35

Ala-tragus plane

Question 36

When utilizing a facebow, which among the landmarks is being used as a guide?

Answer 36

Nasion

Question 37

A dentist has removed all of the teeth of a 60-year-old patient. He should except that the maxillary bone would resorb in which of the following directions?

Answer 37

Superior, posterior and inward.

Question 38

Proper lip support for a patient with complete dentures is provided primarily by the:

Answer 38

Facial surfaces of teeth and simulated attached gingiva.

Question 39

In order to compensate for the contraction of gold alloy, dental investment make use of?

Answer 39

-Hygroscopic expansion -Setting expansion -Thermal expansion

Question 40

Beading in major connectors main function is to:

Answer 40

Maintain tissue contact of the RPD framework.

Question 41

Tissue hyperplasia caused by chronic irritation of overextended borders of the denture is referred to as?

Answer 41

Epulis fissuratum

Question 42

Best explain why the dentist should provide a postpalatal seal in a complete maxillary denture? The seal will compensate for:

Answer 42

Polymerization and cooling shrinkage

Question 43

Record used to be able to identify condylar inclination which can be used in adjusting condylar guidance in a semi-adjustable articulator.

Answer 43

Protrusive record

Question 44

Linguodental sounds

Answer 44

T and D

Question 45

The amount of gingival to occlusal divergence for an unusually short vertical wall is ideally.

Answer 45

Maximum of 2 degrees

Question 46

A type of impression technique used for patients with flabby tissues allowing the clinician to record the movable tissue in its passive position.

Answer 46

Selective pressure

Question 47

Non-rigid connector may be used in fixed bridges in those cases involving:

Answer 47

Short span bridges replacing one missing tooth where the prepared abutment teeth are not in parallel alignment.

Question 48

Impression materials is the most rigid and, therefore the most difficult to remove from the mouth.

Answer 48

Polyether

Question 49

What is the proper disinfection of most rubber impression materials?

Answer 49

10 minutes immersion in 2% glutaraldehyde.

Question 50

It is the very first elastomeric impression material

Answer 50

Polysulfide

Question 51

The smear layer is an important consideration in:

Answer 51

Dentin Bonding

Question 52

In cobalt-chromium alloys, the constituent responsible for corrosion resistance is:

Answer 52

Chromium

Question 53

During the casting process oxidation may happen if the molten metal is overheated using a torch flame. This may liberate ___ compounds forming a black casting.

Answer 53

Sulphur

Question 54

Porcelain bonded to metal is strongest when it is:

Answer 54

Under compression.

Question 55

Absence of shrinkage of impression after curing refers to what property of the material?

Answer 55

Dimensional stability

Question 56

It is a space in between the maxillary and mandibular posterior teeth during protrusive movements.

Answer 56

Christensen's phenomenon

Question 57

It is defined as the growth of crystalline structures within the glass or its surface.

Answer 57

Devitrification

Question 58

Correctly describes the proximal plate.

Answer 58

It must be extended vertically about 2/3 of the length of the crown from the cervical to the marginal ridge.

Question 59

Adding carbon to chromium-cobalt alloy has effect on it's:

Answer 59

Strength

Question 60

In metal-ceramic restoration, fracture of the restoration usually occurs where?

Answer 60

In the porcelain

Question 61

For a tilted abutment that will be prepared for fixed bridges and has a tendency to have pulpal exposure during preparation. The best pre-operative treatment is to:

Answer 61

Do orthodontic treatment

Question 62

how much tooth structure should be reduced in the working cusps when fabricating gold crown restorations?

Answer 62

1.5mm

Question 63

When preparing a maxillary first molar that will receive a metal-ceramic crown, the functional cusp bevel must be place on?

Answer 63

Lingual

Question 64

If you add Potassium sulfate in gypsum, it will result to?

Answer 64

Decrease setting time

Question 65

The least desirable type of all major connectors used in maxillary arch when constructing a RPD framework.

Answer 65

Anterior U-shape

Question 66

Substance porosity of the casting is due to what type of sprue?

Answer 66

Short

Question 67

The type of stress which dental amalgam is most resistant?

Answer 67

Compressive

Question 68

In determining the posterior limit of a maxillary denture base, which of the following is on the most posterior border?

Answer 68

Hamular notch

Question 69

Refractory skeleton that provides strength and hardness during firing.

Answer 69

Quartz

Question 70

It is an anteroposterior curve formed by the incisal edges of the anterior teeth and the buccal cusps of the mandibular posterior teeth.

Answer 70

Curve of Spee

Question 71

A pontic design which is ideally used in anterior segment of the arch.

Answer 71

Modified ridge lap

Question 72

It refers to the rapid cooling of a metal to alter its molecular structure resulting to increase hardness or resistance to deformation after a heat treatment.

Answer 72

Quenching

Question 73

Component of traditional dental porcelain responsible for its translucency.

Answer 73

Feldspar

Question 74

Type of expansion seen in a 30 minute, 35 degree celsius hydrobath of the investment ring before nurn-out process.

Answer 74

Hygroscopic expansion

Question 75

After extraction and healing, the maxillary denture-bearing area discloses bony undercuts in both tuberosity areas. The best treatment for this is ____.

Answer 75

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

Question 76

Maxillary incisal plane should be parallel to which of the following when constructing a complete denture

Answer 76

Interpupillary line

Question 77

What is true about carbide burs?

Answer 77

Less flutes mean it has more cutting efficiency.

Question 78

A line connecting the tragus to ala of the nose is known as?

Answer 78

Camper's

Question 79

Best finish line for cast gold restoration.

Answer 79

Chamfer

Question 80

When evaluating a patient that will receive an RPD framework, which of the following must be taken into consideration?

Answer 80

Condition of the ridge

Question 81

For posterior abutments with acceptable crown-root ratios, average crown length and normal esthetic requirements,the retainer of choice is a __.

Answer 81

Partial veneer crown

Question 82

The component of a fixed partial denture that attaches abutment to the suspended unit

Answer 82

Retainer

Question 83

It is a white clay-like material that acts as a binder and gives opacity to the mass.

Answer 83

Kaolin

Question 84

Procedure done to adapt malleable metal restoration to the tooth in order to close any gaps between the restoration and tooth margins.

Answer 84

Burnishing

Question 85

The component of the polysulfide impression material which causes brown color, stains and foul odor.

Answer 85

Lead dioxide

Question 86

A whistling sound with dentures is indicative of ___.

Answer 86

Too narrow or too high posterior dental arch form.

Question 87

When handling impression materials that are new to you, it is best to:

Answer 87

Follow the instructions of the manufacturer.

Question 88

The superior border of the lingual bar must have a minimum of ___ distance from the gingival margins

Answer 88

4mm

Question 89

Addition of this makes the most effective way in strengthening gold alloys.

Answer 89

Copper

Question 90

A two-stage impression technique may be considered for partial denture construction primarily because?

Answer 90

Resilient and non-resilient tissues are involved.

Question 91

It is also known as a saddle type of pontic design

Answer 91

Ridge flap

Question 92

What teeth is the least desirable to use as an abutment tooth for an FPD?

Answer 92

Tooth with short, tapered root with long clinical crown.

Question 93

Silicate cement restorations are subject to dehydration throughout their lifetime. Therefore, they must be coated by __ to prevent this.

Answer 93

Varnish

Question 94

Exhibits a wheelbarrow type of lever

Answer 94

Class 2 (second order lever)

Question 95

A very thick palatal denture base will primarily affect?

Answer 95

Phonetics

Question 96

The anteroposterior curvature and the mediolateral curvature in the alignment of the occluding surfaces and incisal edges of artificial teeth that are used to develop balanced occlusion is called:

Answer 96

Compensating curve

Question 97

Feldspathic porcelain is composed primarily by the oxides of the following:

Answer 97

-Silicon -Aluminum -Feldspar

Question 98

Best describes the RULE of BULL.

Answer 98

It is the selective grinding of interferences in the working-side movements of the buccal cusp inner inclines of upper teeth and lingual cusp inner inclines of the lower teeth.

Question 99

It is defined as the bilateral, simultaneous contact of anterior and posterior teeth during centric and eccentric positions.

Answer 99

Balanced occlusion

Question 100

Impression materials has the greatest tear strength.

Answer 100

Polysulfide