Occlusion Bootcamp Flashcards

1
Q

Static relationship between the incising or masticating surfaces of the maxillary & mandibular teeth:

A

Occlusion

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2
Q

_____ is the way teeth are shaped; ____ is the way teeth fit together

A

Morphology; occlusion

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3
Q

The tightest or best fit between maxillary & mandibular teeth

A

MI

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4
Q

Is CR affected by malocclusion?

A

No

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5
Q

A relationship between the teeth that is irrespective of tooth position or vertical dimension:

A

CR

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6
Q

What position is used when mounting diagnostic casts of our patients teeth?

A

CR

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7
Q

What determines centric relation?

A

Ligaments NOT teeth

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8
Q

Fibrocartilage present between the mandible & elements of articular eminence:

A

Articular disc

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9
Q

Retrodiscal tissue is _____ to the mandible

A

Posterior

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10
Q

If CR and MIP do not exist together, this is because there has to be a:

A

Prematurity or deflective occlusal contact

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11
Q

The average plane established y the incisal & occlusal surfaces of the teeth

A

Occlusal plane

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12
Q

The anteroposterior (or mesiodistal) curvature of cusps tips of the teeth:

A

Curve of Spee

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13
Q

Mandibular Curve of Spee:

Maxillary Curve of Spee:

A

Mandibular: Concave

Maxillary: Convex

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14
Q

anteroposterior:

A

Front to back- anterior teeth to posterior teeth

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15
Q

The mediolateral curvature of the cusp tips of the teeth:

A

Curve of Wilson

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16
Q

The Curve of Wilson is the _____ curvature of the cusp tips of the teeth

A

Mediolateral

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17
Q

The curve of Wilson spans from the:

A

Right to the left side of the arch

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18
Q

Side-to-side:

Front-to-back:

A

Curve of Wilson

Curve of Spee

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19
Q

Curve of Wilson in mandible can be described as:

Curve of Wilson in the maxilla can be described as:

A

Concave

Convex

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20
Q

Functional/working cusps are cusps that are _____

A

Centric

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21
Q

Hold the vertical dimension of occlusion:

A

Functional/working cusps

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22
Q

Functional/working cusps function in:

A

Mastication

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23
Q

Functional/working cusps come down in the _____ when they occlude

A

Opposing tooth’s central fossa

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24
Q

Functional/working cusps of maxillary teeth:

A

Lingual cusps

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25
Q

Cusps that do not occlude in the central fossae of occluding teeth:

A

Non-functional cusps

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26
Q

Non-functional cusps of maxillary teeth:

A

Buccal cusps

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27
Q

Functional/working cusps of the mandibular teeth:

A

Buccal cusps

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28
Q

Non-functional cusps of the mandibular teeth:

A

Lingual cusps

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29
Q

Working/functional cusps occlude in the ____ of opposing teeth

A

Central fossae

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30
Q

Orthodontic classifications based on the locations of the maxillary & mandibular first molars

A

Angle’s Classification

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31
Q

What is the ideal Angle’s classificaiton?

A

Class I

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32
Q

Angle’s Class II & III are considered:

A

Malocclusion

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33
Q

The MB cusp tip of the maxillary first molar is aligned with the MB groove of the mandibular first molar:

A

Angle’s Class I

34
Q

The maxillary canine fits in the facial embrasure between the mandibular canine and the premolar:

A

Angle’s Class I

35
Q

The resulting profile of Angle’s Class I:

A

Orthognathic

36
Q

No protrusion or retrusion of the mandibule relative to the maxilla:

A

Orthognathic

37
Q

The MB cusp of the maxillary first molar is mesial to the MB groove to the mandibular first molar:

A

Angle’s Class II

38
Q

The resulting facial profile from an Angle’s Class II:

A

Retrognathic

39
Q

The mandible is retruded relative to the maxilla:

A

Angle’s Class II

40
Q

Overbite:

A

Angle’s Class II

41
Q

The MB cusp of the maxillary first molar is distal to the MB groove of the mandibular first molar:

A

Angle’s Class III

42
Q

The facial profile resulting from Angle’s Class III:

A

Prognathic

43
Q

The mandible protruded relative to the maxilla:

A

Prognathic

44
Q

Underbite:

A

Angle’s Class III

45
Q

Typically, anterior teeth are ______ inclined

A

Labially

46
Q

When you set teeth in a dentures course, you will set maxillary anterior teeth with a _____

A

10 degree labial inclination

47
Q

Incisal edges of mandibular incisors should contact the _____ surfaces of maxillary incisors

A

Lingual

48
Q

The contact of the incisal edges of mandibular incisors contacting the lingual surface of maxillary incisors should contact approximately ____ gingival to the incisal edge

A

4 mm

49
Q

For anterior teeth a class II division I results in:

A

Deep bite (incisal edge of mandibular incisor is contacting lingual cervical portion of the maxillary central incisor

50
Q

For anterior teeth a class II division II results in:

A

The typically class I contact being pushed upward cervically

51
Q

The most common result of a class III malocclusion is:

A

End to end contact of incisors

52
Q

Class III malocclusion can cause end to end incisal contact, but also:

A

Underbites & anterior open bite

53
Q

A tooth that is overly erupted and abnormally long as a result:

A

Supreruption

54
Q

Often the result of no functional contact between the tooth in question and a tooth in the opposing arch:

A

Supraeruption

55
Q

An abnormal twisting of the tooth:

A

Torsiversion

56
Q

A tooth that is out of alignment to the labial compared to the ideal arch

A

Labioversion

57
Q

Due to mesial drift of posterior teeth, anterior teeth can crowd. The result is overlapping teeth and abnormal tooth-to-tooth contacts:

A

Crowding

58
Q

Often seen in lower anterior teeth:

A

Crowding

59
Q

When a short primary tooth is retained into adulthood, its cementum can fuse to surrounding bone stopping its eruption:

A

Ankylosis

60
Q

Extractions of ____ teeth can be difficult

A

Ankylosed

61
Q

The distance between a selected point on the mandible & a selected point on the maxilla:

A

Occlusal vertical dimension (OVD)

62
Q

When measure OVD we place the teeth in:

A

CR or MIP

63
Q

The position of the mandible when all the muscles that support it are completely at rest

A

Physiological rest position (PRP)

64
Q

When in physiological rest position, there is typically a space between the maxillary and mandibular incisors, this space is called:

A

Interocclusal rest space

65
Q

Interocclusal rest space is typically:

A

2-4 mm

66
Q

What are the major movements of the mandible that occur in the opening process?

A

Rotation & Translation

67
Q

Rotation is a purely rotational movement where the body of the mandible:

A

Rotates around a fixed horizontal axis line

68
Q

Purely rotational movements, where the body of the mandible rotates around a fixed horizontal axis line, can be described as:

A

Hinge-like movement

69
Q

Where does rotation occur:

A

In the lower joint space of the TMJ

70
Q

What occurs after rotation when the mouth has opened about half-way?

A

Translation

71
Q

During translation, the mandibular condyles & discs:

A

Translate forward onto the articular eminences

72
Q

Full movement of the mandible that moves the entire mandible down and forward, which occurs in the upper joint space of the TMJ:

A

Translation

73
Q

Type of movement that occurs in the LOWER JOINT SPACE:

A

Rotation

74
Q

Type of movement that occurs in the UPPER JOINT SPACE:

A

Translation

75
Q

Any movement of the mandible from MIP that results in tooth contact:

A

Eccentric movement

76
Q

Any movement of the mandible away from CR include:

A

Protrusive movements
Laterotrusive movements
Retrusive movements

77
Q

Protrusive, laterotrusive & retrusive movements can all be considered:

A

Eccentric movements

78
Q

Movement that occurs when the mandible moves anteriorly:

A

Protrusive movement

79
Q

During a protrusive movement, both anterior condyles and their articular discs:

A

Move forward in their fossa

80
Q

During a protrusive movement, the slopes of the articular eminences guide:

A

The mandible down & forward

81
Q

The result of a protrusive movement in a class I occlusion:

A

Incisors sitting end-to-end in relation to one another