Jaw Relations _ Complete Denture MCQs

Jaw Relations _ Complete Denture MCQs

1. The use of kinematic face bow is contraindicated in the edentulous patients because
a) It has to be used on the mandibular ridge
b) Recording base may be unstable on the edentulous mandible
c) Movement of bases may lead to inaccuracy in recording hinge axis
d) All of the above

2. Free way space is defined as
a) Vertical dimension at rest – vertical dimension at occlusion
b) Vertical dimension of occlusion + vertical dimension at rest
c) Vertical dimension at rest
d) Vertical dimension at occlusion – vertical dimension at rest

3. Hinge axis is located with the help of
a) Ear rods
b) Maxillo mandibular vertical relations
c) Kinematic face bow
d) Orbital pointer

4. Free way space of less than normal, in complete denture has the following adverse result:
a) Mucosal irritation
b) Irresistible alveolar ridge resorption
c) Nonspecific ulcerations
d) None of the above

5. The purpose of plane of orientation is:
a) To serve as a guide in establishing occlusal plane
b) To aid in measuring height and length of posterior teeth
c) To serve as an arbitrary plane when established on the articulator
d) To divide the distance between upper and lower cast equally

6. Hinge axis face bow records:
a) Relationship of teeth to the axis of rotation of the jaw
b) Relationship of maxilla to mandible
c) Relationship of mandible to cranium
d) All of the above

7. Gothic arch tracing
a) Intraoral tracing device
b) Extracranial tracing device
c) Records centric relation and the movements of mandible in horizontal plane
d) Records centric occlusion and the movements of mandible in vertical plane

8. What is the established vertical dimension freeway space in millimeters?
a) 5-6
b) 1-3
c) 2-4
d) 6-8

9. The occlusal plane for the complete denture patient is determined by:
a) The face bow device which determines the occlusal plane
b) The position of the upper first molar
c) The height of the retromolar pad and anterior esthetic height
d) The curve of spee and the anterior esthetics

10. If the interocclusal distance is increased beyond physiologic limits, the patients chief complaint may result from:
a) A muscular imbalance
b) An occlusal disharmony in centric
c) A displacement of the mandibular denture
d) A displacement of the maxillary denture while yawning

11. Patient has difficulty in swallowing as a CD wearer. The most probable cause is:
a) Decreased vertical dimension
b) Increased vertical dimension
c) Thickness of flange
d) Decreased retention

12. Before an arbitrary face bow transfer record, the dentist must determine:
a) Physiologic rest position
b) Inclination of each condyle
c) Axial centre of rotation of condyle
d) Kinematic axis of movement of condyle

13. The inter-arch distance measured when the occlusal rims are in uniform contact is:
a) Freeway space
b) Vertical dimension of occlusion
c) Vertical dimension of rest
d) Christensen’s space

14. Increased VDO results in:
a) Strained facial appearance
b) Trauma to underlying tissues
c) Clicking of teeth
d) All of the above

15. Bennett movement of mandible is related to:
a) Condylar rotation
b) Lateral bodily movement of mandible
c) Protrusive movement of mandible
d) Edge to edge occlusion

16. Faulty registration of occlusion cannot be directly attributed to
a) Viscosity
b) Pain in the muscles of mastication
c) Pain in the TMJ
d) Skeletal class III relation

17. Interocclusal space is:
a) Space between upper and lower teeth
b) Space between maxilla and mandible at rest
c) Space between the jaws when muscles that elevate and depress the mandible are in minimum tonic contraction
d) None of the above

18. Orientation records are transferred by:
a) Gothic arch tracing
b) Face bow record
c) Dual impression technique
d) Any of the above

19. Clicking of denture during speaking is due to
a) Increased vertical dimension of occlusion
b) Increased interocclusal space
c) Decreased vertical dimension of occlusion
d) Both ‘B’ & ‘C’

20. Which of the following is an example of static method of recording centric relation?
a) Intraoral records
b) Needles
c) House
d) Paterson

21. The closest speaking space was suggested by
a) Pound
b) McGrane
c) Neswonger
d) Silverman

22. If VDO is increased all will happen except:
a) Perleche
b) Improper aesthetics
c) Trauma to TMJ
d) Trauma to muscles

23. Most accurate reproducible relationship for recording jaw relations is:
a) Physiologic rest position
b) Centric occlusion
c) Centric relation
d) Both B and C

24. During gothic arch tracing apex indicates
a) Centric occlusion
b) Horizontal jaw relations
c) Centric relation
d) Physiologic rest position

25. Muscles involved in centric relation
a) Temporalis & masseter
b) Medial and lateral pterygoids
c) Temporalis and lateral pterygoid
d) None of the above

26. Thickness of wax in inter occlusal records
a) 9 mm
b) 2 mm
c) 2 cm
d) 10 mm

27. Centric relation refers to the position of the condyles in
a) Posterior most position
b) Posterior superior position
c) Anterior superior position
d) Anterior most position

28. Face bow measures relationship of maxilla to
a) Opening & closing axis
b) Mandible
c) Zygomatic bone.
d) None of the above

29. Hinge axis is best detected by
a) Face bow transfer and freely adjustable condylar pieces
b) Face bow with three point articulator
c) With face bow only
d) With articulator only
(KAR -98)

30. When patient closes in centric occlusion if lower jaw is placed anteriorly in relation to upper jaw. It is called as
a) Normal occlusion
b) Centric occlusion
c) Pre normal occlusion
d) Centric relation

31. Translatary movements of the condyle and the disk are controlled by
a) Capsular ligament and suprahead of medial pterygoid
b) Capsular ligament and suprahead of lateral pterygoid
c) Suprahead of medial and lateral pterygoid
d) Capsular ligament and the infrahead of lateral pterygoid

32. Most reliable method of recording centric relation
a) Graphic tracing with excursive movements
b) Wax cone method
c) Trial and error method
d) None of the above

33. The difficulty in constructing C.D in a bell’s palsy patient is
a) Impression taking
b) Teeth setting
c) Border moulding
d) Jaw relations

34. Modiolus at the corner of mouth is formed by all of the following muscles except
a) Triangularis
b) Buccinator
c) Masseter
d) Orbicularis oris

35. Immediate Bennett shift occurs:
a) During immediate forward movement of condyle
b) During first 5-6 mm movement of condyle
c) during first premature occlural contact after rotation of condyle.
d) During immediate rotation of condyle

36. Beyron point is located at:
a) 13 mm anterior to posterior margin of tragus on a line from center of tragus to outer canthus
b) 11 mm anterior to posterior margin of tragus on a line from parallel to and 7 mm below FHP
c) 10 mm anterior to posterior margin of tragus on a line from center of tragus to outer canthus
d) 13 mm anterior to tragus on a line from base of tragus to outer canthus

37. Which muscle does not decussate in modiolus
a) Levator labii superioris
b) Orbicularis Oris
c) Zygomaticus major
d) Buccinator
(AIPG-05)

38. Only pure hinge movements of the mandible occur at:
a) Centric occlusion
b) Centric relation
c) Lateral excursion
d) Terminal Hinge Position

39. Face bow is used to transfer:
a) Axis-orbital plane
b) Frankfort horizontal plane
c) Camper’s plane
d) Occlusal plane

40. The Gothic arch tracing device is used to record
a) The vertical dimension of occlusion
b) The centric relation
c) The centric occlusion
d) Vertical dimension at rest

41. When making complete denture the occlusal plane should be parallel to the
a) Frankfort horizontal plane only
b) Interpupillary line only
c) Campers plane only
d) Campers plane and interpupillary line

42. The orbioxial opening can be determined by at any point with the help of:
a) Lateral pterygoid
b) Medial pterygoid
c) Masseter
d) Temporalis

43. Face bows are classified as:
a) Arbitrary face bow
b) Arbitrary and kinematic face bow
c) Arbitrary and value face bow
d) None of the above

44. Centric relation is between
a) Maxilla to cranium
b) Mandible to cranium
c) Mandible to condyle
d) Tooth to tooth

45. Retromylohyoid curtain is formed by all EXCEPT
a) Superior constrictor
b) Palatoglossal muscle
c) Mylohyoid
d) Masseter

46. Mechanical methods to determine vertical dimension are
a) Pre-extraction records
b) Ridge relation
c) A & B
d) Phonetics

47. Freedom of centric relation correlates with
a) 0.15 – 1.5 mm
b) 0.20 – 0.40 mm
c) 0.5 to 1.5 mm
d) 1 to 2 mm

48. The rest position of mandible is established by muscles and
a) Pressure
b) Gravity
c) Temperature
d) None of the above

49. Lateral movement is produced by anterior translation of one condyle producing rotation about the
a) Center in the opposite condyle
b) Center in the opposite ramus
c) Center in the opposite angle
d) Center in the opposite neck
(BHU-2012)

50. Fischer’s angle is formed by the intersection of the protrusive and non-working side condylar paths as viewed in the
a) Horizontal plane
b) Reverse plane
c) Sagittal plane
d) Oblique plane

51. Bennett angle is formed between sagittal plane and the average path of the advancing condyle as viewed in horizontal plane during
a) Medial movement
b) Lateral movement
c) Centric freedom
d) Inter-cuspal movement

52. While recording condylar guidance using three pin articulator, the incisal pin is kept?
a) Out of contact
b) In contact with incisal table
c) Removed from articulator
d) Not significant

53. The record of the position of the patients maxillary ridge in relation to the condyles is the
a) Jaw relation
b) Articulator
c) Face bow record
d) Centric jaw relation

54. Progressive lateral translation of the TMJ which occurs at a rate proportional to the forward movement of
a) Non-working condyle
b) Working condyle
c) Both non-working and working condyle
d) None of the above

55. Before an accurate face bow transfer record can be made, it is necessary to determine
a) The axial centre of opening closing rotation
b) The inclination of each condyle
c) The physiologic rest position
d) Centric relation

56. Which of the following shapes of the palatal vault is most favourable for lateral stability?
a) V shape
b) U shape
c) Flat
d) (B) & (C)

57. Extra oral tracing method is grouped in the following for recording centric relation for complete denture patients
a) Functional method
b) Close mouth method
c) Static method
d) None of the above

58. Which of the following is an example of intraoral tracer?
a) Height
b) Philip
c) Stansbery
d) Messerman

59. Which of the following measures the vertical dimension when the mandible and muscles involved are in physiologic function of speech?
a) Free way space
b) Leeway space
c) Closest speaking space
d) Primate space

60. Adequate interocclusal rest space required for the comfort of the patient and health of the tissue is
a) 1-8mm
b) 4-6mm
c) 5-8mm
d) 2-4mm

61. Least interference is encountered in which position?
a) Centric relation
b) Centric occlusion
c) Maximum protruded position
d) None

62. In a patient with hemimandibulectomy, VDO is best recorded by?
a) Previous photographs
b) Lip musculature with minimum strain
c) Closest speaking space
d) Facial Silhouette

63. Minimum protrusion required for condylar guidance adjustment is?
a) 3 mm
b) 4 mm
c) 6 mm
d) 8 mm

64. The following method of recording centric jaw relation has the advantage reproducibility and cross verification
a) Tactile method
b) Nick and notch method
c) Needle house
d) Gothic arch tracing