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Occlusion > Static Occlusion (complete) > Flashcards

Static Occlusion (complete) Flashcards

1
Q

How do you get arch length

A

distance from the distal surface of the third molar, through the proximal contact areas, around the arch, to the distal surface of the other third molar

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2
Q

what are the normal arch lengths

A 
Max = 128 mm
Man = 126 mm
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3
Q

which arch is typically longer, the Max or the Man

A

Max

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4
Q

how do you get arch width

A

measure the distance across the arch

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5
Q

which arch is usually wider, the Max or the Man

A

the Max

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6
Q

What occludes in the CF line of Man teeth

A

the Max lingual cusps

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7
Q

what occludes in the CF line of the Max teeth

A

the Man buccal cusps

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8
Q

how much labial inclination do the Max and Man incisors usually have

A

12-28 degrees

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9
Q

What happens to the amount of tooth you will see if maxillary incisors have too much labial inclination

A

you will see less of the facial surface of the tooth

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10
Q

about how much of the mandibular incisors are usually seen when they are overlapped by max incisors

A

Greater than 50%

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11
Q

What is overjet

A

the HORIZONTAL overlap of Maxillary incisors over the mandibular incisors

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12
Q

What does MIP stand for

A

Maximum intercuspation (when your mouth is closed and you have maximum contact between man and max arches)

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13
Q

What is overbite

A

the VERTICAL overlap of the Maxillary incisors over the mandibular incisors

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14
Q

What is the anterior guidance of the anterior teeth

A

the way the anterior contacts provide guidance for the mandible in lateral and protrusive movements

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15
Q

What determines your anterior guidance

A

the overjet and overbite of your anterior teeth

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16
Q

What are the 6 variations of anterior teeth relationship

A
  1. Class I
  2. Class II division 1 (deep bite)
  3. Class II division 2
  4. Class III end to end
  5. Class III
  6. Anterior bite Bite
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17
Q

What does the Max Central incisor contact in Class I normal occlusion

A

the Mandibular Central and Lateral incisor of the same side

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18
Q

What does the Man central incisor contact in Class I normal occlusion

A

the Max central incisor on the same side

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19
Q

what does the max lateral incisor contact in Class 1 occlusion

A

The man lateral incisor and the man canine

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20
Q

What does the man lateral incisor contact in class 1 normal occlusion

A

the max central and lateral incisor

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21
Q

what does the max canine contact in class 1 normal occlusion

A

the man canine and the first man premolar

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22
Q

what does the man canine contact in class 1 normal occlusion

A

the max lateral incisor and the max canine

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23
Q

What is the relationship between the max and mandibular incisors in class 1 normal occlusion

A

The facial surface and incisal edge of the man central incisor contact the labial surface of the max central incisor
(normal overbite and overjet)

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24
Q

What is the relationship between the max and mandibular incisors in class 2 division 1 occlusion (deep bite)

A

the incisal edge and most incisal portion of the facial surface of the man central incisor contacts the most cervical portion of the lingual surface of the max central incisor, or touches the gingiva labial to the max central incisor
(Excessive overbite and overjet)

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25
Q

What is the relationship between the max and mandibular incisors in class 2 division 2 occlusion

A

much of the facial surface of the man central incisors contact a large portion of the labial surfaces of the max central incisors
(excessive overbite, slightly less than normal overjet)

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26
Q

What is the relationship between the max and mandibular incisors in class 3 occlusion (end to end)

A

the incisal edge of the man central incisors contact the incisal edge of the max central incisors
(no overbite or overjet)

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27
Q

What is the relationship between the max and mandibular incisors in class 3 occlusion

A

the labial surface of the MAN central incisors is contacted by the facial surface and incisal edge of the MAX central incisors
(Negative overjet and slightly less than normal overbite)

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28
Q

What is the relationship between the max and mandibular incisors in anterior open bite

A

some structure in the posterior portion of the jaw is not allowing the central incisors to overlap or even touch
(overjet may be normal, but lack of overbite, (negative maybe)

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29
Q

What are the centric cusps

A

the cusps that contact the opposing teeth

30
Q

which cusps are the centric cusps in the posterior mandible

A

the buccal cusps

31
Q

which cusps are the centric cusps in the posterior maxilla

A

the lingual cusps

32
Q

What are some other names for the centric cusps

A 
centric holding cusps
supporting cusps
stamp cusps
occluding cusps
working cusps
functional cusps
33
Q

What do centric cusps normally look like in comparison to non-centric cusps

A

they are more broad and rounded

34
Q

do centric cusps help maintain vertical dimension

A

yes

35
Q

where are the centric cusps usually located

A

1/3 of the way into the total buccolingual dimension

36
Q

why is it important that the centric cusps are located 1/3 of the way into the total buccolingual dimension

A

because this makes the centric cusps positioned over the long axis of the tooth and the forces of mastication are dissipated through the root

37
Q

On each arch which cusps are the non-centric cusps

A 
maxillary = buccal cusps
mandibular = lingual cusps
38
Q

how do the non-centric cusp tips compare to the centric cusp tips

A

they are sharper with more definition to the cusp ridges and tip

39
Q

what is the function of the non-centric cusps

A

to provide stability in occlusion

40
Q

where are the non-centric cusps positioned into the buccolingual dimension of the tooth

A

1/6 of the way into the buccolingual dimension of the tooth

41
Q

which incline (outer or inner) of the non-centric cusp has functional significance

A

the inner incline

42
Q

what is the functional significance of the inner incline of the non-centric cusp

A

it occludes with, or is close to, the outer incline of the centric cusp of the opposing tooth

43
Q

What are other names for non-centric cusps

A 
non-centric holding cusps
guiding cusps
shear cusps
non-working cusps
non-functional cusps
44
Q

What do guiding cusps oppose

A

embrasures, or grooves in opposing dentition

45
Q

what do supporting cusps contact

A

central fossa, marginal ridges of the opposing dentition

46
Q

what are centric stops

A

the place on a tooth where the opposing centric cusp contacts it

47
Q

what does a normal buccolingual relationship between the posterior teeth of both arches

A
  1. more efficient use of chewing muscles

2. minimize trauma from cheek, or tongue biting

48
Q

What does FOA stand for

A

the Functional Outer Aspect

49
Q

what is the FOA

A

the outer aspect of a centric cusp, which has functional significance

50
Q

does the FOA on centric cusps have functional significance

A

yes

51
Q

what are the three points of contact in posterior teeth during occlusion

A
  1. the FOA contacting the inner incline of the opposing non-centric cusps
    2 .the inner incline of the centric cusp contacts the inner incline of the opposing centric cusp
  2. the inner incline of the of the non-centric cusp contacting the FOA of the centric cusp of the opposing tooth
52
Q

Where do the two Mandibular centric cusps occlude on the opposing maxillary teeth

A

the mesiobuccal cusp of mandibular molars contacts the mesial marginal ridge of the opposing tooth (possibly the distal marginal ridge of the tooth just mesial to the opposing tooth)
the distobuccal cusp of the mandibular molars contacts the central fossa of the opposing tooth

53
Q

where do the two maxillary centric cusps occlude on the opposing teeth

A

the mesiolingual cusp of maxillary posterior teeth occludes in the central fossa of the opposing tooth
the disolingual cusp of the maxillary posterior teeth occludes on the distal marginal ridge of the opposing tooth (and possibly the mesial marginal ridge of the tooth directly distal to the opposing tooth)

54
Q

what is a tripod contact

A

when the centric cusp contacts both the mesial and distal marginal ridges of the two opposing teeth (two contacts on the cusp tip, and one on each marginal ridge)

55
Q

which two teeth don’t oppose two teeth in the opposite arch

A

the mandibular central incisors

the maxillary 3rd molars

56
Q

in the maxillary arch each tooth opposes _______ and ______ except the maxillary 3rd molars

A

its counterpart in the mandibular arch,

the tooth distal to its counterpart

57
Q

in the mandibular arch each tooth opposes _______ and ______ except the mandibular central incisors

A

its counterpart in the maxillary arch,

the tooth mesial to its counterpart

58
Q

Where do the two Mandibular centric cusps occlude on the opposing maxillary teeth

A

the mesiobuccal cusp of mandibular molars contacts the mesial marginal ridge of the opposing tooth (possibly the distal marginal ridge of the tooth just mesial to the opposing tooth)
the distobuccal cusp of the mandibular molars contacts the central fossa of the opposing tooth

59
Q

where do the two maxillary centric cusps occlude on the opposing teeth

A

the mesiolingual cusp of maxillary posterior teeth occludes in the central fossa of the opposing tooth
the disolingual cusp of the maxillary posterior teeth occludes on the distal marginal ridge of the opposing tooth (and possibly the mesial marginal ridge of the tooth directly distal to the opposing tooth)

60
Q

what is a tripod contact

A

when the centric cusp contacts both the mesial and distal marginal ridges of the two opposing teeth (two contacts on the cusp tip, and one on each marginal ridge)

61
Q

which two teeth don’t oppose two teeth in the opposite arch

A

the mandibular central incisors

the maxillary 3rd molars

62
Q

in the maxillary arch each tooth opposes _______ and ______ except the maxillary 3rd molars

A

its counterpart in the mandibular arch,

the tooth distal to its counterpart

63
Q

in the mandibular arch each tooth opposes _______ and ______ except the mandibular central incisors

A

its counterpart in the maxillary arch,

the tooth mesial to its counterpart

64
Q

What is posterior crossbite

A

where the maxillary posterior teeth are positioned lingual to the mandibular posterior teeth

65
Q

what are the centric cusps for both arches in posterior crossbite

A 
Mandibular = lingual cusps
Maxillary = buccal cusps
66
Q

Where does the MB cusps of the Md 1st molar occlude

A

in the marginal ridge areas between the Mx 2nd premolar and the Mx 1st molar

67
Q

What is used to determine if an occlusion is class 1 occlusion (angles class 1)

A

if the mesiobuccal cusp of the max 1st molar is opposite the distal groove of the man 1st molar

68
Q

what is used to determine if an occlusion is class 2 occlusion (angles class 2)

A

if the mesiobuccal cusp of the max 1st molar is opposite the buccal embrasure between the man 2nd premolar and man 1st molar

69
Q

what is used to determine if an occlusion is class 3 oclcusion (angles class 3)

A

if the mesiobuccal cusp of the max 1st molar is opposite the buccal embrasure between the man 1st and 2nd molar

70
Q

arrange from most to least common classification of occlusion (angles)

A

class 1 malocclusion - (55%)
normal occlusion - (30%)
class 2 malocclusion - (15%)
Class 3 malocclusion - (

Occlusion (7 decks)

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