Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

D1 Spring - Occlusion & Fixed Pros. > 3/6: Static Factors of Occlusion > Flashcards

3/6: Static Factors of Occlusion Flashcards

1
Q

What are static factors of occlusion?

A

Characteristics shared by the teeth when they are stationary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are factors and forces that determine the tooth position?

A
  • labiolingual alignment
  • mesiodistal alignment
  • vertical position
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What things are components of tooth position?

A

Muscles
- cheeks, lips, and tongue
- neutral zone
Genetic
- size and shape of arch and teeth -> available space
Habits
Interproximal Contacts
Occlusal contacts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are interproximal contacts?

A

Maintain tooth position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is mesial drift?

A

Alveolar bone and gingival fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What do occlusal contacts do?

A

Maintain tooth position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is intra-arch tooth alignment?

A

The relationship of the teeth to each other within the dental arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the ‘plane’ of occlusion?

A

‘Plane’ that curves to fit the occlusal surfaces and incisal edges of all the teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Describe the plane of occlusion

A
  • it is not flat
  • teeth positioned in the arches at varying degrees of inclination
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Is the mandible concave or convex?

A

Concave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Is the maxilla concave or convex?

A

Convex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is angulation of the teeth determined by?

A

The long axis of the tooth (crown and root)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the angulation of the mandibular anterior teeth?

A

Labially inclined (20 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the angulation of the mandibular premolars?

A

Mesially inclined (6 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the angulation of the mandibular molars?

A

Mesially inclined (10-15 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the angulation of the maxillary anterior teeth?

A

Labially inclined - central incisor greates (28 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the angulation of the maxillary premolar?

A

Mesially inclined (9 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the angulation of the maxillary molars?

A

Mesially inclined (12 degrees)
Crowns of the maxillary molars are tilted distally (and labially)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the angulation of the mandibular anterior teeth in the frontal plane?

A

Vertical inclination (0 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the angulation of the mandibular premolars in the frontal plane?

A

1st premolar - labial inclination (9 degrees)
2nd premolar - lingual inclination (9 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the angulation of the mandibular molars in the frontal plane?

A

Lingual inclination (20 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is the angulation of the maxillary anterior teeth in the frontal plane?

A

Incisors - distal inclination (2-6 degrees)
Canines - mesial inclination (17 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the angulation of the mandibular premolars in the frontal plane?

A

Slight buccal inclination (5 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the angulation of the mandibular molars in the frontal plane?

A

Buccal inclination (20 degrees)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the curve of spee?

A

Antero-posterior curvature of the occlusal plane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Where is the curve of spee concave and convex?

A

Concave in mandible, convex in maxilla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is the curve of wilson?

A

Medio-lateral curvature of the occlusal plane

28
Q

Where is the curve of wilson concave and convex?

A

Concave in the mandible, convex in the maxilla

29
Q

Where are posterior teeth loaded when they occlude?

A

Axially

30
Q

What are posterior teeth designed to take?

A

Heavy loads, support the occlusal vertical dimension

31
Q

When anterior teeth occlude, where are they not loaded?

A

Through their long axis

32
Q

What are anterior teeth not designed for?

A

Loading

33
Q

What is the occlusal table?

A

The area defined by the cusp tips and the mesial and distal cusp ridges/arms

34
Q

How much of the width of the tooth is the occlusal table?

A

50-60% of the buccolingual width of the tooth

35
Q

What does the occlusal table facilitate?

A

Axial loading

36
Q

What is the inner incline of the occlusal table?

A

Incline inside the buccal and lingual cusp ridges

37
Q

What is the outer incline of the occlusal table?

A

Inclines outside the buccal and lingual cusp ridges

38
Q

What is inter-arch alignment?

A

The relationship of the teeth in one arch to those in the other arch

39
Q

What are the types of arch shapes?

A

U shaped/square/tapering
Symmetricl, smooth in outline

40
Q

Which arch is wider?

A

Maxilalry

41
Q

Which arch is longer?

A

Maxillary
Max: 128mm long
Mand: 126mm long

42
Q

What do the buccal cusps of the mandibular posterior teeth and the lingual cusps of maxillary posterior teeth occlude?

A

With opposing central fossa areas
- to minimize trauma to soft tissue

43
Q

What are supporting/centric/functional/stamp cusps?

A

Lingual cusps of maxillary teeth and buccal cusps of mandibular teeth

44
Q

What are guiding/non-centric/balancing/shearing cusps?

A

Buccal cusps of maxillary teeth and lingual cusps of mandibular teeth

45
Q

What is the bucco-occlusal line?

A

Imaginary line drawn through the buccal cusp tips of the mandibular teeth

46
Q

What is the linguo-occlusal line?

A

Imaginary line defined by joining the lingual cusp tips of the maxillary teeth

47
Q

What is the central fossa line?

A

Imaginary line that follows the central grooves and fossa of all the posterior teeth

48
Q

What does the bucco-occlusal line of the mandible occlude?

A

In the central fossa (CF) line of the maxilla

49
Q

What does the linguo-occlusal line of the mandible occlude?

A

In the central fossa (CF) line of the mandible

50
Q

What is crossbite?

A

The opposite of the ideal inter-arch relationship

51
Q

What does the BO line of the maxilla occlude with in crossbite?

A

CF line of the mandible

52
Q

What does the LO line of the mandible occlude with in crossbite?

A

CF line of the maxilla

53
Q

What is the net effect of arch length discrepancy?

A

Tooth to tooth vs. tooth to two teeth relationships

54
Q

Describe the class I molar relationship of the MB cusp of the maxillary first molar

A

MB cusp of the max first molar is aligned directly over the buccal groove of the mandibular first molar

55
Q

Describe the class I molar relationship of the MB cusp of the mandibular first molar

A

MB cusp of the mand first molar occludes in the embrasure area between the maxillary second premolar and first molar

56
Q

Describe the class I molar relationship of the ML cusp of the maxillary first molar

A

ML cusp of the maxillary first molar occludes in the central fossa area of the mandibular first molar

57
Q

Describe the class II molar relationship of the MB cusp of the maxillary first molar

A

Situated over the embrasure between the mandibular second premolar and first molar

58
Q

Describe the class II molar relationship of the MB cusp of the mandibular first molar

A

Occludes in the central fossa of the maxillary first molar

59
Q

Describe the class II molar relationship of the DL cusp of the maxillary first molar

A

Occludes in central fossa of the mandibular first molar

60
Q

Describe the class III molar relationship of the MB cusp of the maxillary first molar

A

Is situated over the embrasure between the mandibular first and second molar

61
Q

Describe the class III molar relationship of the DB cusp of the mandibular first molar

A

Occludes in the embrasure between distal marginal ridge of the maxillary second premolar and the mesial marginal ridge of the maxillary first molar

62
Q

Describe the class III molar relationship of the ML cusp of the maxillary first molar

A

Situated in the mesial pit of the mandibular second molar

63
Q

What is the vertical overlap in a class I?

A

Distance the maxillary anterior teeth overlap the mandibular anterior teeth in a vertical direction
2-4mm is “normal”

64
Q

What is the horizontal overlap in a class I?

A

Distance the maxillary anterior teeth overlap the mandibular teeth when measured in a horizontal direction
2-4mm is “normal”

65
Q

What is division 1 in class II anterior teeth?

A

Great vertical overlap, the mandibular teeth contact the gingival third of the maxillary anterior teeth “deep bite”

66
Q

What is division 2 in class II anterior teeth?

A

Maxillary incisors are lingually inclined, laterals overlap the centrals labially

67
Q

What is the class III anterior tooth relationship?

A

End to end relationship
Mandibular anterior teeth are so far forward overlapping maxillary anterior teeth

D1 Spring - Occlusion & Fixed Pros. (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions