Static Factors of Occlusion Flashcards

1
Q

ALIGNMENT AND OCCLUSION

OF THE DENTITION (3)

A

►FACTORS AND FORCES THAT
DETERMINE THE TOOTH POSITION
►INTRA-ARCH ALIGNMENT
►INTER-ARCH ALIGNMENT

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

FACTORS AND FORCES THAT
DETERMINE THE TOOTH
POSITION (3)

A

►labiolingual alignment
►mesiodistral alignment
►vertical position

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

tooth posiiton (3)

A

muscles
genetic
habits

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

tooth position:

muscles (2)

A
  • cheeks, lips, and tongue

- neutral zone

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

tooth position:

genetic

A

-size and shape of arch and teeth = available space

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

tooth posiiton (3)

A

muscles
genetic
habits

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

tooth posiiton (3)

A

muscles
genetic
habits

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

tooth posiiton (3)

A

muscles
genetic
habits

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

tooth position

inter proximal contacts (2)

A
  • maintain tooth position

- mesial drift: alveolar bone nd gingival fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

tooth position

occlusal contacts

A

-maintain tooth position

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

ALIGNMENT AND OCCLUSION

OF THE DENTITION (3)

A
  • factors and forces that determine the tooth position
  • intra arch alignment
  • inter arch alignment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

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
13
Q

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
14
Q

plane of occlusion

not

A

flat

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

plane of occlusion

teeth positioned in the arches at

A

varying degrees of inclination

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

plane of occlusion

  • – on the mandible
  • – on the maxilla
A

concave

convex

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

angulation of the teeth is deterred by the

A

long axis of the tooth (crown and root)

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

angulation of the tooth in the (2) plane

A

sagittal

frontal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q
ANGULATION OF MANDIBULAR TEETH
SAGITAL PLANE
anterior teeth:
premolars:
molars:
A
labially inclined (20 deg)
medially inclined (6 deg)
medially inclined (10-15 deg)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q
ANGULATION OF MAXILLARY TEETH 
SAGITTAL PLANE
anterior teeth:
premolars:
molars:
A
labially inclined- central incisor greatest (28 deg)
medially inclined (9 deg)
medially inclined (13 deg)- crown of the maxillary molars are tilted distally (and labially)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q
ANGULATION OF MANDIBULAR 
TEETH FRONTAL PLANE
anterior teeth:
premolars:
molars:
A

vertical inclination (0 deg)
1st pre- labial inclination (9 deg)
2nd pre- lingual inclination (9 deg)
lingual inclination (20 deg)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q
ANGULATION OF MAXILLARY TEETH
FRONTAL PLANE
anterior teeth:
premolars:
molars:
A

incisors: distal inclination (2-6 deg)
canines: mesial inclination (17 deg)
slight buccal inclination (5 deg)
buccal inclination (20 deg)

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

CURVE OF SPEE (2)

A
  • antero-posterior curvature of the occlusal plane

- concave in the mandible, convex in the maxilla

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

CURVE OF WILSON (2)

A
  • medio-lateral curvature of the occlusal plane

- concave in the mandible, convex in the maxilla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
posterior teeth | when they occlude, they are loaded
axially
26
posterior teeth are designed to take
heavy loads, | support the occlusal vertical dimension
27
anterior teeth | when they occlude,
they are not loaded through their long axis
28
anterior teeth are not designed for
loading
29
occlusal table
the area defined by the cusp tips and the mesial and distal cusp ridges/arms
30
occlusal table is the --% of the buccolingual width of the tooth
50-60
31
occlusal table facilitates
axial loading
32
INNER INCLINES
inclines inside the buccal and lingual cusp ridges
33
OUTER INCLINES
inclines outside the buccal and lingual cusp ridges
34
alignment and occlusion of the dentition
forces and factors the determined he tooth position - intraarch alignment - inerarch alignment
35
NTER-ARCH TOOTH ALIGNMENT
THE RELATIONSHIP OF THE TEETH IN ONE ARCH TO THOSE IN THE OTHER ARCH
36
arch shape and size (2)
- u shaped/square/tapering | - symmettrical, smooth in outline
37
►ARCH WIDTH: | ►ARCH LENGTH:
maxillary is wider maxillary arch is longer max: 128 mm long mand: 126 mm long
38
NET EFFECT OF NORMAL ARCH | WIDTH (2)
- the buccal cusps of mandibular posterior teeth and the lingual cusps of maxillary posterior teeth occlude with the opposing central fossa areas - minimize trauma to soft tissue
39
supporting/centric functional/stamp cusps
lingual cusps of max teeth and buccal cusps of mand teeth
40
guiding/non centric/balancing/shearing cusps
buccal cusps of max teeth and lingual cusps of mandibular teeth
41
BO line
imaginary line drawn through the buccal cusp tips of the mand teeth
42
LO line
imaginary line defined bt joining the lingual cusp tips of the max teeth
43
CF line
imaginary line that follows the central grooves and fossa of all the posterior teeth
44
the BO line of the mandible occludes in the
CF line of the max
45
the LO line of the max occludes in the
CF of the mand
46
cross bite (3)
the opposite of the ideal inter arch relationship the BO line of the max occludes with the CF line of the mandible the LO line fo the mand occludes with the CF line of the max
47
define the relationship between the
max and mandibular first molars
48
angles class 1 relationship is the
ideal occlusion from an orthodontic perspective
49
MB CUSP OF THE MAXILLARY FIRST MOLAR
is aligned directly over the buccal groove of the man first molar
50
MB CUSP OF THE MANDIBULAR FIRST MOLAR
occludes in the embrace area between the max second premolar and first molar
51
ML CUSP OF THE MAXILLARY FIRST MOLAR
occludes in the central fossa area of the mandibular first molar
52
MB CUSP OF THE MAXILLARY FIRST MOLAR
is situated over the embrasure between the mandibular second premolar and first molar
53
MB CUSP OF THE MANDIBULAR FIRST MOLAR
occludes in the central fossa of the max first molar
54
DL CUSP OF THE MAXILLARY FIRST MOLAR
occludes in central fossa of the mand first molar
55
MB CUSP OF THE MAXILLARY FIRST MOLAR
is situated over the embrasure between the mand first and second molar
56
DB CUSP OF THE MANDIBULAR FIRST MOLAR
occludes in the embrasure between distal marginal ridge of the max second premolar and the mesial marginal ridge of the max first molar
57
ML CUSP OF THE MAXILLARY FIRST MOLAR
is situated in the mesial pit of the mand second molar
58
VERTICAL OVERLAP (2)
- distance the max anterior teeth overlap the and anterior teeth in a vertical direction - 2-4 mm is normal
59
HORIZONTAL OVERLAP (2)
distance the max anterior teeth overlap the mand teeth when measured in a horizontal direction -2-4 mm is normal
60
CLASS II ANTERIOR TEETH | division 1
great vertical overlap, the man teeth contact the gingival third of the max anterior teeth (deep bite)
61
CLASS II ANTERIOR TEETH | division 2
max incisors are lingually inclined, laterals overlap the centrals labially
62
CLASS III ANTERIOR TOOTH RELATIOSHIP (2)
- end-to-end relationship | - mand anterior teeth are so far forward overlapping max anterior teeth