Occlusion

Question 1

Normal Occlusion

Answer 1

Rare

Realistically use centric occlusion as standard

Question 2

Centric Occlusion

Answer 2

How you close/bite together

Question 3

Occlusion develops

Answer 3

with primary teeth

Question 4

Properly aligned teeth

Answer 4

are relatively self cleansing

Teeth out of alignment can affect function of teeth and periodontium

Question 5

Habitual occlusion

Answer 5

Most comfortable

Question 6

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

Answer 6

occlude with 2 teeth, prevents supraeruption

Question 7

Occlusal Trauma

Answer 7

Peridonitum withstands a lot of stress from parafunctional habits

Question 8

Para-functional habits

Answer 8

Nail biting, thumb sucking, malalignment

Question 9

Trauma can cause issues

Answer 9

doesn’t cause PD but contributes

Question 10

Overjet

Answer 10

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

Question 11

Arch Form

Answer 11

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

Question 12

Overbite

Answer 12

Measure vertically
Negative or excessive overbite
Do not measure at CSN

Question 13

Open contacts

Answer 13

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

Question 14

Primary Occlusion

Answer 14

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

Question 15

Leeway space

Answer 15

Primary molars are greater than perm. premolars

Molar gone and premolar is too small, creates leeway space

Question 16

Phases of arch development

Answer 16

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

Question 17

Curve of Spee

Answer 17

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

Question 18

Curve of Wilson

Answer 18

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

Question 19

Centric Stops

Answer 19

When you bite, places that stop teeth

height of cusp contour, marginal ridges, central fosse

Question 20

Functioning Cusp

Answer 20

LUBL (Lingual Upper Buccal Lower)

Question 21

Iatrogenic

Answer 21

Dentist fault, created a problem

Question 22

Non- Functioning Cusp

Answer 22

BULL (Buccal Upper Lingual Lower)

Question 23

Centric Relation

Answer 23

Relaxed muscles and pushing the chin back

Should place teeth within 1mm of centric occulusion

Question 24

Lateral Occlusion

Answer 24

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

Question 25

Protrusive Occlusion

Answer 25

Forward movement on mandible | Centrals and lateral meet edge to edge

Question 26

Freeway space

Answer 26

Mouth relaxed | Space b/w teeth avg 2-3 mm

Question 27

Malocclusion

Answer 27

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

Question 28

Angle's Classification

Answer 28

Class 1, 2,3

Question 29

Class 1

Answer 29

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

Question 30

What kind of profile is Class 1?

Answer 30

Mesognathic- flat or straight

Question 31

Class I malocclusion

Answer 31

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

Question 32

Class 2 malocclusion

Answer 32

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

Question 33

Class 2, division 1

Answer 33

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

Question 34

What type of profile is class 2 Division 1?

Answer 34

Retrognathic profile- Protruding upper lip, recessive mandible and chin

Question 35

Class 2 division 2

Answer 35

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

Question 36

What kind of profile is class 2 division 2?

Answer 36

Mesognathic profile- May have prominent chin

Question 37

Class 3

Answer 37

mand overgrows Cure w/ surgery Underbite

Question 38

What profile is class 3?

Answer 38

Retrognathic