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102 Class > Occlusion > Flashcards

Occlusion Flashcards

1
Q

Normal Occlusion

A

Rare

Realistically use centric occlusion as standard

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2
Q

Centric Occlusion

A

How you close/bite together

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3
Q

Occlusion develops

A

with primary teeth

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4
Q

Properly aligned teeth

A

are relatively self cleansing

Teeth out of alignment can affect function of teeth and periodontium

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5
Q

Habitual occlusion

A

Most comfortable

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6
Q

Normally each tooth (except mand centrals and max 3rds)

A

occlude with 2 teeth, prevents supraeruption

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7
Q

Occlusal Trauma

A

Peridonitum withstands a lot of stress from parafunctional habits

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8
Q

Para-functional habits

A

Nail biting, thumb sucking, malalignment

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9
Q

Trauma can cause issues

A

doesn’t cause PD but contributes

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10
Q

Overjet

A

Measures horizontal
How much further frontal teeth are over mand.
1-3 mm normal

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11
Q

Arch Form

A

Anterior- Curved, canine are arch supports
Middle- Straight line, premolar
Posterior- Straight, Molars function as arch support

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12
Q

Overbite

A

Measure vertically
Negative or excessive overbite
Do not measure at CSN

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13
Q

Open contacts

A

Not a good thing, if they don’t have a good contact area teeth will move

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14
Q

Primary Occlusion

A

Primate space: Jaw grows down and forward to make space for perm. molars
B/w max lateral and canine
and mand 1st molar and canine

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15
Q

Leeway space

A

Primary molars are greater than perm. premolars

Molar gone and premolar is too small, creates leeway space

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16
Q

Phases of arch development

A

Jaw development, growth, and lengthening to accommodate perm dentition. Sequence important for space maintenance

17
Q

Curve of Spee

A

Front to back, naturally curve
Dip in the middle
Some are deep, some shallow

18
Q

Curve of Wilson

A

Mand. teeth aren’t straight
Tilt of lower molars
Side to side curve

19
Q

Centric Stops

A

When you bite, places that stop teeth

height of cusp contour, marginal ridges, central fosse

20
Q

Functioning Cusp

A

LUBL (Lingual Upper Buccal Lower)

21
Q

Iatrogenic

A

Dentist fault, created a problem

22
Q

Non- Functioning Cusp

A

BULL (Buccal Upper Lingual Lower)

23
Q

Centric Relation

A

Relaxed muscles and pushing the chin back

Should place teeth within 1mm of centric occulusion

24
Q

Lateral Occlusion

A

Chew on one side or the other
Working side vs balancing side
Move canine until cusp to cusp, separate posterior teeth

25
Q

Protrusive Occlusion

A

Forward movement on mandible

Centrals and lateral meet edge to edge

26
Q

Freeway space

A

Mouth relaxed

Space b/w teeth avg 2-3 mm

27
Q

Malocclusion

A

Lack of ideal centric occlusion, affects hygiene (tissue infection, food caught)

28
Q

Angle’s Classification

A

Class 1, 2,3

29
Q

Class 1

A

Ideal relationship of jaws and arches
MB of max 1st molar in line w/ MG of mand 1st molar
Max canine in line w/ distal of mand. canine and mesial of mand 1st molar

30
Q

What kind of profile is Class 1?

A

Mesognathic- flat or straight

31
Q

Class I malocclusion

A

Crowding or diastimas due to disproportion b/w size of teeth and size of arch

32
Q

Class 2 malocclusion

A

MB cusp of max 1st molar in line w/ MG of mand 1st molar by more than the width of a premolar
D surface of canine is D to M surface of max canine by at least width of premolar

33
Q

Class 2, division 1

A

Max anteriors protrude facially from mand anteriors
May have overbite
Palate usually curved

34
Q

What type of profile is class 2 Division 1?

A

Retrognathic profile- Protruding upper lip, recessive mandible and chin

35
Q

Class 2 division 2

A

Molars in class 2 relation but max anterior are upright/retruded
Laterals may tip or overlap centrals
Deep overbite
Don’t extract from this class

36
Q

What kind of profile is class 2 division 2?

A

Mesognathic profile- May have prominent chin

37
Q

Class 3

A

mand overgrows
Cure w/ surgery
Underbite

38
Q

What profile is class 3?

A

Retrognathic

102 Class (4 decks)

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