4.1 Prostho Flashcards by Nathaneille Cunanan

The part of the fixed bridge which retains it to the abutment tooth
a. pontics
b. luting agent
c. connectors
d. retainers

d. retainers

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A term which denotes a butt joint margin
a. knife edge
b. shoulder
c. chamfer
d. none of these

b. shoulder

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Excessive wear on the occlusal surfaces of natural teeth results from
a. bruxism
b. all of these
c. disharmony in occlusion
d. clenching

b. all of these

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The most important component of a fixed bridge
a. pontic
b. connector
c. retainer
d. abutment

d. abutment

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The following cements are claimed to have fluoride content
a. polycarboxylates
b. glass ionomer
c. all of these
d. none of these

c. all of these

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The material used to detect occlusal prematurities
a. leaf gauge
b. alginate material
c. carbon marker
d. baseplate wax

a. leaf gauge

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The area at the junction of the preparation (axial walls) and the unprepared tooth extending around the most cervical portion
a. abutment
b. proximal convergence
c. margins
d. gingival floor

c. margins

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A reduction in the function of the masticatory system is generally attributed to
a. tooth loss
b. malocclusion
c. dental caries
d. all of these

d. all of these

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The following are functions of temporary coverage EXCEPT
a. protection from thermal changes
b. none of these
c. protect the underlying tooth structure
d. provides pulp sedation

b. none of these

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The main disadvantage of using polyether elastomeric material
a. stick to the dentate teeth
b. more expensive and tears easily
c. are stiffer when set
d. are not as accurate as polyvinyl silicones

c. are stiffer when set

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Factors that influence marginal seal are the following EXCEPT:
a. oral hygiene
b. cementation technique
c. capillary action
d. oral chemistry

a. oral hygiene

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Requirement in tooth preparation for a partial veneer crown
a. all of these
b. to 1.5 mm tooth reduction
c. undercuts for retention
d. incorporation of grooves and bevels

d. incorporation of grooves and bevels

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Which ridge relationship is observed in the modified ridgelap type of pontic
a. no contact on the residual ridge
b. pinpoint contact at the crest of the ridge
c. straddles the entire facio-lingual dimension of the ridge
d. pinpoint facial contact

d. pinpoint facial contact

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Tooth preparation is done to achieve the characteristics of the following:
a. path of insertion
b. resistance form
c. all of these
d. retention form

c. all of these

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The highest percentage of fixed partial denture failure
a. fracture of the component parts
b. pulpal involvement and pathology
c. failure of the luting agent
d. caries

d. caries

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Esthetics for anterior fixed bridges is dependent upon
a. skill of the technician
b. color harmony
c. preparation design
d. all of these

d. all of these

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An endodontically treated tooth was restored with a cast post-and-core and a metal-ceramic crown. The patient complains of pain, especially on biting, 3 months later. Radiographic findings and tooth mobility tests are normal. The most probable cause of pain is _.
a. vertical fracture
b. psychosomatic
c. premature contact
d. loose crow
e. mobility

a. vertical fracture

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What do you call the process when glass begins to crystallize?
a. Transition
b. Transformation
c. Reorganization
d. Devitrification

d. Devitrification

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Causes of imperfect fitting restoration are the following EXCEPT:
a. ill fitting provisional restoration
b. nodule at the internal surface of castings
c. porosities on the internal surface of castings
d. non parallel axial walls

c. porosities on the internal surface of castings

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After fitting the coping and the case was returned to the laboratory for the porcelain build-up the margins did not fit the die. The resultant cause
a. overtrimmed die
b. distortion of the casting
c. accidental damage of the margins of the die
d. overcontoured porcelain on the proximal
areas

d. overcontoured porcelain on the proximal areas

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Light cured glass ionomer cement or restoration is also known as
a. Resin modified glass ionomer
b. Simply glass ionomer
c. Composite
d. Compomer

a. Resin modified glass ionomer

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The amount of lingual reduction required on a posterior tooth that will receive a complete veneer metal crown is __mm.
a. 1.2 - 1.5
b. 1 - 1.2
c. 0.5 - 0.75
d. 0.75 – 1

c. 0.5 - 0.75

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The procedure of removing surface tarnish or
oxidation is
a. soldering
b. boiling
c. casting
d. pickling

d. pickling

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The subject of esthetics should be examined from these viewpoints EXCEPT:
a. biomechanical
b. mechanical
c. biological-physiological
d. psychological

b. mechanical

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The periodontal structure most likely lacerated in tissue retraction a. apical fibers b. circular fibers c. oblique fibers d. epithelial attachment

d. epithelial attachment

The expansion that occurs when the casting ring is submerged in a water bath at 37 deg C for 1 hour

~~a. hygroscopic~~

27

Any unit of a removable partial denture that engages an abutment tooth in order to resist displacement away from the basal seat tissues a. Major connector b. Indirect retainer c. Denture base d. Direct retainer

d. Direct retainer

28

Which type of palatal connector is the least desirable of the following maxillary major connectors? a. Anterior and posterior palatal scrap b. U-shaped palatal connector c. Single palatal strap d. Anterior and posterior palatal bar

b. U-shaped palatal connector

29

Occlusal rest seats in crowns and inlays compared to those in enamel are made _. a. smaller and deeper b. larger and shallower c. larger and deeper d. smaller and shallower

c. larger and deeper

30

Part of a removable partial denture that connects the components on one side of the arch to the components on the opposite side of the arch a. Rest b. Major connector c. Continuous bar d. Indirect retainer

b. Major connector

31

Forces on one side of the arch causes lifting forces on the contralateral side of the arch. Which can counteract such force? a. Denture base b. Rests c. Major connector d. Direct retainer design

b. Rests

32

The primary disadvantage of cast metal base a. Poor esthetics b. Inaccuracy of fit c. Cannot be relined or rebased d. High thermal conductivity

c. Cannot be relined or rebased

33

The occlusal rest seat outline on premolars buccolingually is _. a. one fourth the distance «ween the buccal and lingual cusp tips b. half the distance between 60s buccal and lingual cusp tips c. one fifth the distance between the buccal and lingual cusp tips d. one third the distance between the buccal and lingual cusp tips

b. half the distance between 60s buccal and lingual cusp tips

34

The most common consequence of a poor removable partial denture design is _. a. dental caries b. bone resorption c. impaired speech d. tooth mobility

b. bone resorption

35

Campers line is an imaginary line from a. none of these b. inferior border of the tragus of the ear to the inferior border of the nose c. middle of the tragus of the ear to the inferior border of the nose d. superior border of the tragus of the ear to the inferior border of the nose

d. superior border of the tragus of the ear to the inferior border of the nose

36

The base of a free-end partial denture should cover the maximum denture supporting area because: a. the force per unit area is reduced to a minimum b. this allows placement of the maximum number of artificial teeth c. the strength of the base is increased d. function will be improved

a. the force per unit area is reduced to a minimum

37

What is the required thickness as expressed in mm. of the denture base along the crest and slopes of the residual ridge? a. 1 b. 4 c. 2 d. 3

a. 1

38

In a distal extension RPD, reducing the amount of force to the abutment teeth can be made possible by a. reducing the bucco-lingual width of the artificial teeth b. reducing the mesiodistal width ef the artificial teeth c. reducing the coverage of the denture base d. reducing the number of artificial teeth

a. reducing the bucco-lingual width of the artificial teeth

39

Which type of partial denture directs all masticatory forces down the long axis of the abutment teeth and utilizes the balance force design? a. Overdenture b. Swinglock c. Conus denture d. Equipoise

d. Equipoise

40

After wax elimination, the first half or bottom flask will contain the a. acrylic resin b. cast c. wax d. teeth embedded in the stone matrix

b. cast

41

A basic physiologic consideration in RPD service evaluation is a. patient's neuromuscular function and control b. patient's known diseases and disorders c. condition of the denture bearing areas d. patient's financial capability

a. patient's neuromuscular function and control

42

The contour of a lingual bar connector should: a. be of equal thickness b. taper superiorly with greatest bulk gingivally c. taper superiorly and gingivally with greatest bulk at the middle d. be with greatest bulk superiorly and tapers gingivally

b. taper superiorly with greatest bulk gingivally

43

A method of impression commonly used for the mandibular distal extension partially edentulous arch due to greater variation in tissue mobility and displaceability a. Mucostatic technique b. Closed mouth technique c. Functional technique d. Altered cast technique

d. Altered cast technique

44

Sub-surface porosity on cast metal will result if the sprue is too a. short b. thick c. long d. thin

b. thick

45

What branch of Prosthodontics pertains to the replacement of missing teeth and contiguous oral structures with artificial substitutes that are readily removable? a. Implant b. Removable c. Maxillofacial d. Fixed

b. Removable

46

Which form of a circumferential clasp consists of a circumferential retentive arm arising from one direction and a reciprocal arm arising from another? a. Ring b. Back action c. Embrasure d. Half and half

d. Half and half

47

The line encircling a tooth, designating its greatest circumference as determined by a denta] surveyor is referred to as the: a. guiding line b. undercut c. height of contour d. line of convergence

c. height of contour

48

A Kennedy classification of partially edentulous arches wherein a unilateral edentulous area is present with natural teeth remaining both anterior and posterior to it a. Class I b. Class III c. Class II d. Class IV

b. Class III

49

Attach the sprue at the: a. perpendicular surfece of the wax pattern b. thinnest part of the wax pattern c. neck of the wax pattern d. bulkiest part of the wax pattern

d. bulkiest part of the wax pattern

50

Type of denture base that allows thermal conductivity a. Processed Resin b. Vacuum Formed Bases c. Shellac Base d. Cast alloys

d. Cast alloys

51

The procedure of preserving the functional width and depth of the sulci when making an impression a. Trimming b. Boxing c. Mounting d. Basing

b. Boxing

52

What are some indications for surgical correction of the edentulous ridges? a. It improves the vertical relation of the patient b. To recontour ridges for better support, stability and retention of complete dentures c. It corrects arch form of. the patient d. Edentulous ridges de not need surgical correction

b. To recontour ridges for better support, stability and retention of complete dentures

53

Instrument used in establishing the level of the occlusal plane using the maxillary occlusion rim a. Foxplane b. Caliper c. Facebow d. Pantograph

a. Foxplane

54

Tissue hyperplasia caused by chronic irritation of overextended borders of the denture is referred to as: a. Hyperplastic ridge b. Frenular attachments c. Pagillomatosis d. Epulis fissuratum

d. Epulis fissuratum

55

What movement of the condyle occurs during maximum opening of the mouth? a. Translation b. Lateral c. Vertical d. Rotation

a. Translation

56

The outer contour of the occlusion rim is finished based on the a. esthetics b. smile line c. buccal corridor d. level of the occlusal plane

c. buccal corridor

57

In lateral translation, the working condyle moves a. Downward, forward and laterally b. Upward, backward and laterally c. Downward, forward and medially d. Upward, backward and medially

a. Downward, forward and laterally

58

What do you call the movable consistency of mucosa of the residual Alveolar ridge that causes the denture base to shift? a. atrophic b. unyielding c. flabby d. resilient

c. flabby

59

T, D, S, z are examples of — a. Labial sounds b. Alveolar sounds c. Labiodental sounds d. Sibilant sounds

b. Alveolar sounds

60

Which muscle contracts when the patient opens his/ her mouth? a. Temporalis b. Buccinator c. Lateral pterygoid d. Masseteric

c. Lateral pterygoid

61

What should be the position of the maxillary occlusion rim anteriorly in relation to the residual alveolar ridge? a. any position b. labial to the crest c. lingual to the crest d. on the crest

b. labial to the crest

62

Restoring bone bulk by placing bone grafts to enlarge denture bearing areas for denture retention is referred to as a. Vestibuloplasty b. Alveoloplasty c. Sulcoplasty d. Ridge augmentation

d. Ridge augmentation

63

Articulators can be classified according to the _. a. Number of mandibular movements it can simulate b. Design c. Cost d. Size

a. Number of mandibular movements it can simulate

64

The resistance of the denture base to horizontal or rotatory movement under an occlusal lead is referred to as: a. Support b. Retention c. Stability d. Function

c. Stability

65

In setting the maxillary first molar, which cusp should be on the plane? a. Mesiolingual b. Distobuccal c. Mesiobuccal d. Distolingual

a. Mesiolingual

66

It is the key to oral function a. Occlusion b. Articulator c. Temporomandibular joint d. Neuromuscular system

a. Occlusion

67

Which area will most likely be affected by the coronoid process? a. tuberosity area b. retromolar pad area / c. distobuccal border of the mandibular impression d. distobuccal border of the maxillary impression

d. distobuccal border of the maxillary impression

68

What technique is used to fabricate a record base using the alternating application of autopolymerizing powder and liquid until it is 2-3 mm in thickness? a. Injection b. Sprinkle c. Processed d. Non-flasking

b. Sprinkle

69

A type of semi-adjustable articulator wherein the condylar elements are on the upper member and the mechanical fossae placed on the lower member of the articulator: a. Simple-hinge b. Non-arcon c. Arcon d. Plane-line

b. Non-arcon

70

Which muscle contracts when the patient is at centric relation position? a. Masseteric b. Orbicularis oris c. Temporalis d. Buccinator

c. Temporalis

71

Immediate dentures should be scheduled for relines at: a. 1 month and 3 months post extraction b. 4 months and 7 months post extraction c. 5 months and 10 months post extraction d. 1 year and 2 years post extraction

c. 5 months and 10 months post extraction

72

In recording centric relation, the mandible can be retruded by? a. Having the patient relax the jaw muscles while the dentist manually manipulates the chin b. Having the patient protrude and retrude the mandible repeatedly c. Having the patient make repeated swallowing movements d. All of the above

d. All of the above

73

Which of the following best describes condylar guidance? a. It is controlled by the dentist b. It is dictated by the patient c. It is dictated by the patient but can be adjusted by the dentist d. It can be adjusted by the laboratory technician

b. It is dictated by the patient

74

A record of the positional relationship of opposing teeth or jaw to each other is a. occlusal index b. centric occlusion c. occlusion rims d. incisal guidance

a. occlusal index

75

Clinical procedure of determining the exact extent of the flanges of a denture a. preliminary impression making b. border molding c. All of these d. final impression making

b. border molding

4.1 Prostho Flashcards

(75 cards)