Teeth Setting and Articulators _ Complete Denture MCQs

Teeth Setting and Articulators _ Complete Denture MCQs

1. Articulators are classified into arbitrary positional and functional by
a) Beak
b) Posell
c) Boucher
d) Thomas

2. An evaluation of which of the following represents the most important aspect in selection of shade for the restoration to match with existing dentition?
a) Hue
b) Value
c) Chroma
d) Size

3. Width of the central incisor as compared to the bizygomatic width is
a) 1:13
b) 1:14
c) 1:15
d) 1:16

4. Articulators:
a) Duplicate jaw movements
b) Simulate jaw movements
c) Have condylar movements
d) Reproduce the bemer movement

5. Metamerism is
a) Operator unable to record the colour
b) Patient has teeth with different shades
c) Various light sources produce different colour perception
d) All the above

6. Lateral condylar guidance is
a) L = 12+d / H
b) L = H+d / 12
c) L = H/8 + 12
d) L = H+d / 4

7. Arcon articulator is:
a) Hanau model H2
b) Dentatus articulator
c) Gysi trubite articulator
d) None of the above

8. One of the criteria of an ideal occlusion in natural dentition is:
a) Maximum contacts of the tips of the cusps only
b) Disocclusion of anterior teeth during mandibular protrusion
c) Disocclusion of posterior teeth on the non working side in lateral excursion
d) Occlusion of posterior teeth during mandibular protrusion

9. The distance between the teeth and the axis of rotation is shorter than the skull with the resultant loss of accuracy the instrument which produces such type of replication is:
a) Semi adjustable articulator
b) Hinge articulator
c) Fully adjustable articulator
d) Face bow articulator

10. A patient who wears complete denture is having trouble in pronouncing the letter ‘t’. This is probably caused by:
a) Too thick palatal seal area
b) Improper positioning of mandibular incisors
c) Incorrect position of maxillary incisors
d) Excessively thick mandibular base

11. Porcelain denture teeth
a) Have a higher coefficient of thermal expansion than acrylic teeth
b) Have a lower abrasion resistance than enamel
c) Should be used where the inter alveolar clearance is small
d) Have a higher abrasion resistance than gold

12. The maxillary teeth if placed too far anteriorly and superiorly in a complete denture results in the faulty pronunciation of:
a) F and V sounds
b) S and T sounds
c) Vowels
d) Consonants

13. Selective grinding for equilibrating complete dentures is best accomplished after processing when the dentures are:
a) Rearticulated using original jaw relation record
b) Rearticulated with a new series of jaw relation
c) Equilibrated in the patients mouth
d) Spot ground in the patients mouth

14. The concept of occlusion that maintains that the anteroposterior plane of occlusion should be parallel with the denture foundation and not dictated by the horizontal condylar guidance is called.
a) Lingualised concept
b) Balanced concept
c) Neutrocentric concept
d) Mutually protected concept

15. On the articulator the incisal guidance is the
a) Horizontal guidance
b) Same as condylar guidance
c) Mechanical equivalent of curve of space
d) Mechanical equivalent of horizontal and vertical over lap

16. Discrepancies in the occlusion of a denture can be clearly detected from:
a) Observation of the denture in the mouth
b) Masticatory efficiency
c) Clicking sounds at Temporomandibular joint
d) Remounting procedures of the denture

17. When establishing balanced occlusion, lingual cusps of maxillary posterior teeth on the non-working side should contact:
a) Facial incline of the lingual cusp of mandibular posterior teeth
b) The lingual incline of the lingual cusp of mandibular posterior teeth
c) Lingual incline of the facial cusp of mand. posterior teeth
d) Central fossa of mandibular posterior teeth

18. The cuspal inclines of the maxillary buccal cusps and the mandibular lingual cusps should be grounded if they are in defective occlusal contact in:
a) Working position only
b) Balancing position only
c) Both working and balancing positions
d) Central position

19. Bilateral balanced occlusion is:
a) Balance in working lateral and protrusive contacts
b) Balance in lateral contacts only
c) Balance in working, balancing and protrusive contacts
d) Balance in protrusive contacts only

20. Bennett angle is:
a) The angle between sagittal condylar path and Frank fort plane
b) The angle which the path of balancing side condyle makes with the sagittal plane during lateral excursion
c) Measured by using a face bow
d) None of the above

21. Of the three dimensions of color, the one which describes the dominant color of the object is:
a) Hue
b) Value
c) Chroma
d) Maverick

22. Best esthetics for a maxillary denture is when:
a) Anterior teeth are placed on the crest of Alveolar ridge
b) Teeth are placed lingual to the crest of alveolar ridge
c) Teeth are placed facial to alveolar ridge
d) Teeth articulate with mandibular anterior teeth placed over the crest of the ridge.

23. Sibilant sounds are produced at:
a) Rest position
b) Oculuding position
c) Open from resting position
d) Between rest and oculuding position

24. In the development of balanced occlusion of a complete denture, during tooth arrangement, a steep condylar path is associated with a low degree of incisal guidance, this requires that the compensating curve should be:
a) Flat
b) Shallow
c) Prominent
d) Reverse

25. Resin teeth:
a) Show a high compressive strength
b) Contraindicated in patients with decreased inter occlusal distance
c) Show crazing
d) Show a high fracture strength

26. The condylar guidance of an articulator is dependent on:
a) The depth of the glenoid fossa
b) The vertical overlap of the incisors
c) The cuspal inclines
d) The inclination of the articular eminence

27. Will’s gauge is used to measure
a) Vertical height
b) Bi-zygomatic width
c) Inter condylar distance
d) Inter papillary width

28. The concept of lingualised occlusion was put forward by
a) Gysi
b) Mc Grane
c) Sears
d) Payne

29. ‘Squint’ test is used as guide for selecting
a) Shade of teeth
b) Shape of teeth
c) Length of teeth
d) None of the above

30. The function of compensating curve is
a) To provide balanced occlusion in complete dentures when mandible is protruded
b) To aid in establishing an incisal guide
c) Same as function of curve of spee
d) None of the above

31. The characteristic of an “Arcon” articulator is:
a) The condylar elements are placed on the upper member of the articulator
b) The condylar elements are placed on the lower member of the articulator
c) The condylar elements are non-movable
d) The inclination of condylar path is in a curved plane

32. Recontouring and selective grinding procedures are carried out in complete denture to:
a) Decrease the vertical dimension of occlusion
b) Decrease cuspal height
c) Enhance curve of spee
d) Remove occlusal disharmony

33. A high occlusal contact occurs in the balancing position between the lingual cusp of maxillary 1st molar and the buccal cusp of mandibular 1st molar. To eliminate this which surface should be reduced:
a) Lingual cusp of maxillary 1st molar and buccal cusp of mandibular 1st molar
b) Either lingual cusp of maxillary 1st molar or buccal cusp of mandibular 1st molar
c) Lingual cusp of maxillary 1st molar with milling paste at the time of denture insertion
d) Lingual cusp of maxillary 1st molar in centric and occluding position

34. Bizygomatic width divided by 3.3 gives approximately
a) Mesio-distal width of lower anterior teeth
b) Mesio-distal width of upper anterior teeth
c) Mesio-distal width of upper teeth from molar to molar
d) Mesio-distal width of lower teeth from molar to molar

35. The best criterion for teeth selection is:
a) Past photographs
b) Pre extraction records
c) Study models
d) None of the above

36. Chroma is:
a) Intensity of colour
b) Transparency of enamel
c) Transparency of enamel & dentin
d) None of the above

37. Curve of Monson is
a) An anteroposterior curve
b) Is a lateral molar curve with convexity facing downwards
c) Is a lateral premolar curve with convexity facing upwards
d) A reverse curve

38. A reliable guide for positioning maxillary anterior teeth is complete dentures is
a) Fovea palatine
b) Incisive papillae
c) Maxillary ridge
d) Rugae

39. When there is a prematurity in centric occlusion but not in eccentric or other movements then reduce:
a) Cusps of opposing teeth
b) Mesiodistal position of teeth
c) Opposing fossa or marginal ridge
d) None of the above

40. Lateral shift (Bennett’s movement) influences:
a) Faciolingual position of teeth
b) Mesiodistal position of the teeth
c) Both of the above
d) None of the above

41. The term ARCON was coined by
a) Bergstrom
b) Hanau
c) Gillis
d) Fish

42. Bennett movement is
a) Direct lateral side shift of the mandible that occurs simultaneously with lateral mandibular excursion
b) Direct lateral side shift of the mandible that occurs simultaneously with medial mandibular excursion
c) Direct medial side shift with medial mandibular excursion
d) Direct lateral side shift with medial mandibular excursion

43. Central incisor tooth arrangement in tapering arch is
a) Rotation of incisors on their long axis inward at the distal aspect
b) Rotation of incisors on their long axis inward at the facial aspect
c) Rotation of incisors on their long axis inward at the mesial aspect
d) Central incisors almost in a straight line

44. Palatal cusp of upper posterior teeth in complete denture patients should fall on:
a) Crest of mandibular ridge
b) Lingual to crest of mandibular ridge
c) Buccal to crest of mandibular ridge
d) Buccal vestibule
(AIPG -04)

45. When testing arrangement of teeth at the trial insertion of complete dentures, the lower lip should, when pronounce the letter ‘f’ in fifty
a) Be anterior to maxillary incisors
b) Not come near maxillary incisors
c) Light contact maxillary incisors incisal edge
d) None of the above

46. Bucco-lingual width of posterior teeth should be
a) Equal to the width of the natural teeth they replace
b) Greater than the width of the natural teeth they replace
c) Lesser than the width of the natural teeth they replace
d) Width of artificial posterior teeth is a matter of operator’s preference

47. In complete denture construction labio-dental sound F & V are used to determine the:
a) Vertical placement of upper anterior teeth
b) Labio-lingual position of anterior teeth
c) Anterior posterior position of anterior teeth
d) Space between tongue and anterior part of hard palate

48. When noting condylar guidance, incisal pin should be
a) In contact with guidance table
b) Out of contact
c) Not at all related
d) None of the above

49. In complete denture setting, for better aesthetics, the maxillary anteriors are set
a) Parallel to the middle of the face profile
b) Parallel to the profile of the lower of the face
c) Skeletal profile has no role in aesthetic teeth setting
d) Parallel to the inner canthus-angle of the mouth line

50. Mark the consonant sounds requiring contact between the lips and teeth (labio dentals)
a) ‘d’, ‘t’, ‘l’
b) ‘b’, ‘p’, ‘m’
c) ‘th’
d) ‘f’, ‘ph’, ‘v’

51. One of the following rules explains about the grinding of certain cusps to produce balance in lateral movements:
a) Ante’s rule
b) Bull rule
c) Wolf’s rule
d) Cieszynski’s rule

52. In complete denture teeth setting, to achieve a fully balanced occlusion
a) The posterior teeth should have 0° cuspal inclination
b) Cuspal inclination does not play a part
c) The most ideal is 33° cuspal inclination
d) 45° cuspal inclination is a must.

53. Proper lip support for complete denture is provided primarily by
a) Convex surface of labial flange
b) Facial surface of teeth and simulated gingiva
c) Thickness of border in the vestibule
d) Festooned carvings on facial surface

54. Leon William’s classification given an idea about
a) Number of teeth and size of the arch
b) Residual alveolar ridge
c) Form of tooth and face
d) Colour of artificial teeth

55. The incisal guidance that assures the maximum stability in a denture is
a) 15 – 25 degrees
b) Zero degrees
c) Less than 15 degrees
d) 45 degrees

56. During Bennett movement or shift of mandible:
a) Condyle of working side exhibit bodily forward movement
b) Condyle of non working side exhibit bodily lateral movement
c) Condyle of working side exhibit bodily lateral movement
d) Condyle of working side exhibit bodily lateral and forward movement

57. Balanced occlusion with noncuspal teeth is achieved by
a) Compensating curves
b) Incisal guide
c) Balancing ramps
d) None

58. Which of the following is utmost important factor considered in balanced occlusion with little change in esthetics and change in inclination or amplitude leads to the loss of facial appearance?
a) Inclination of condyle guidance
b) Compensating curve of spec.
c) Inclination of incisal guidance
d) Cuspal height and angulation

59. Spherical theory is proposed by
a) Bonwill
b) Monson
c) Hall
d) Hanau

60. In Bonwill’s equilateral triangle the apex of triangle is located at
a) The anterior part of incisive papilla
b) At the prominent part of chin upper central
c) At the anteriormost part of incisor
d) At the anteriormost part of lower central incisor.

61. The term “chroma aspect” in selection of artificial teeth refers to
a) Degree of saturation of hue
b) Intensity of value
c) Both value and hue
d) None of the above

62. For balanced occlusion, when condylar inclination is increased the compensating curve should be
a) Shallow
b) Decreased and flat
c) Increased and prominent
d) Reversed

63. Best esthetics for a maxillary denture is when __:
a) Anterior teeth are placed on the crest of alveolar ridge
b) Teeth are placed lingual to the crest of alveolar ridge
c) Teeth are placed facial to alveolar ridge
d) Teeth articulate with mandibular anterior teeth placed over the crest of the ridge

64. While pronouncing S, T, D, N, Z sounds tip of tongue makes contact with:
a) Anterior 2/3rd of plate
b) Maxillary canines
c) Inner 2/3rd of lower lip
d) does not make any contact

65. The zero degree anatomic teeth is used in:
a) Sharp ridge
b) Flat ridge
c) Ridge with undercut
d) Well contoured ridge

66. Anatomic teeth should have cusp angle of
a) (30^\circ)
b) (31^\circ)
c) (32^\circ)
d) (33^\circ)

67. The theory of matching teeth to face forms was advanced by
a) Hanau
b) Frush and Fisher
c) J.Leon Williams
d) Schiffman

68. The hinge joint articulator was designed by:
a) Bonwill
b) Gariot
c) Gysi
d) Hanau

69. Which type of articulators that permit horizontal as well as vertical motion but do not orient the motion to the TMJ via a face bow transfer?
a) Type I
b) Type II
c) Type III
d) Type IV

70. Non-anatomic teeth are indicated in:
a) Flat ridge
b) Knife-edge ridge
c) Poor muscular control
d) All the above

71. Trubyte tooth indicator is used for determining:
a) Length of the tooth
b) Width of the tooth
c) Thickness of the tooth
d) Form of the tooth

72. The incisive papilla in the edentulous maxillary arch acts as a guideline to proper placement of the maxillary central incisors. The central incisors are generally found to be __ mm anterior to a line bisecting the incisive papilla:
a) 8 to 10mm
b) 6 to 8mm
c) 4 to 6mm
d) 5 to 7mm

73. The most important factor in arrangement of the teeth:
a) Mold
b) Leverage
c) Occlusion
d) Occlusal plane

74. Mono plane teeth are indicated in:
a) When centric relation only transferred
b) Centric and eccentric relation only transferred
c) Patient with old denture which is severely attirted and cusp height reduced
d) depends on dentist selection

75. Changes in __ length of upper anterior teeth in complete denture teeth setting which sounds are affected:
a) f, v
b) d, t
c) dentoalveolar sounds
d) b, p, m

76. The labiodental sounds are
a) f,v,ph
b) s,z,c
c) f,z,s
d) f,v,z

77. Resin teeth are
a) high in fracture toughness
b) dimensionally stable
c) not indicated with diminished inter arch distance
d) susceptible to crazing with time

78. The Apex of the Bonwill’s Triangle is located at the?
a) Anterior tip of the incisive papilla
b) Upper central incisor’s contact point
c) Anterior most point on the chin
d) Lower central incisor’s contact point

79. The advantage of resin teeth over porcelain teeth is
a) Greater wear resistance
b) Increased hardness
c) Better dimensional stability
d) Greater impact resistance

80. Bi-zygomatic width divide by 16 gives approximately mesiodistal width of –
a) Upper central incisor
b) Lower central incisor
c) Upper anterior teeth
d) Lower anterior teeth

81. Complete denture teeth are in edge to edge contact in centric occlusion. What should be done?
a) Grind the centric holding cusp
b) Grind the lingual fossa of upper and lower incisors
c) Grind the cusp in such a way that the incline of the upper cusp slides buccally and lower cusp slides lingually
d) Grind the cusp in such a way that the incline of the upper cusp slides lingually and lower cusp slides buccally

82. Hanau H2 articulator has a intercondylar distance of
a) 90 mm
b) 100 mm
c) 110 mm
d) 120 mm

83. The intercondylar distance can be adjusted in the
a) Hanau H2 articulator
b) Hanau arcon H2 articulator
c) Whipmix articulator
d) Mean value articulator

84. The overbite-overjet relations of anterior teeth are determined primarily by esthetics and
a) Phonetics
b) Mastication
c) Pouting
d) Modiolus

85. Non arcon instruments gained considerable popularity in complete denture prosthodontics because upper and lower members are
a) Loosely attached
b) Rigidly attached
c) Medially attached
d) Inferiorly attached

86. For highly visible gingiva, it is advisable to select
a) Conical teeth and short contact areas
b) Conical teeth and long contact areas
c) Square teeth and short contact point
d) None of the above

87. The concavity at the root of the nose is used as a third point of reference with
a) Whipmix average axis facebow
b) Hanau
c) Dentatus
d) Kavo

88. The antero posterior curve is
a) Curve of spec
b) Curve of Wilson
c) Curve of monson
d) Bonwill curve

89. Transfer of hinge opening axis is compulsory in:
a) Partially edentulous
b) Complete edentulous
c) Orthodontics
d) Planning to change vertical dimensions

90. Movement of denture base was the least in patient with poor ridges when
a) 20 degree teeth were used
b) 33 degree teeth were used
c) 0 degree teeth were used
d) Inverted cusp teeth were used

91. In Parkinsonism patient teeth arrangement is
a) Anatomic
b) Non anatomic
c) Semi anatomic
d) Saucer teeth

92. Most commonly affected word if maxillary incisor teeth are anteriorly paced?
a) Ch
b) F
c) V
d) S

93. In India during summers teeth arrangement for occlusion check-up is done in:
a) Type I wax
b) Type II wax
c) Type III wax
d) Corrective wax

94. The Denar articulator belong to
a) Class II-A
b) Class I
c) Class III-B
d) Class IV

95. The hinge axis is an imaginary line passing through or near the
a) Centre of the external auditory meatus
b) The coronoid process
c) Centre of the condylar fossa
d) Centre of the condyle

96. Lingually placed mandibular posteriors will cause all except
a) Gagging
b) Speech difficulties
c) Excessive pressure on ridge
d) Tongue interference