Occlusion

Front 1

Back 1

Ramus of mandible

verticle position of mandible

Front 2

Intercuspation

Back 2

Relationship of cusps of premolar and molar of one jaw to the other when mouth is closed

(Side view)

Front 3

Flush terminal plane

Back 3

Only used for PRIMARY teeth

When max and mand are even with each other during occlusion (molaes are on top of eachother)

Front 4

Distal step

Back 4

Only for Primary occlusion

Mand molars are more posterior than maxillary molars during occlusion

Front 5

Mesial step

Back 5

Only for PRIMARY teeth

Mand molars are more anterior than max molars during occlusion

Front 6

Diastema

Back 6

A gap or space between teeth

Important for primary to hold spot for permanent

Front 7

Primate spaces

Back 7

Spaces inbetween primary teeth in the primary dentition

-Diastema mesial to the max canines and distal to the mand canines

Front 8

Horizontal alignment

Back 8

Tongue is huge force for erupting teeth

Tongue muscles can push teeth outward

Muscles in cheek prevent from being pushed too far out

Front 9

Malocclusion

Back 9

Bad bite.

Misalignment of teeth in dental arches

Front 10

Protrusion

Back 10

Teeth and arch pushed outward/forward

Can be caused by tongue pushing on anterior teeth

Protrude= forward

Sometimes a "protruded" mandible is called an underbite

Front 11

Retrusion

Back 11

Teeth are pushed lingually from muscles of tongue

Retrude= backwards or inwards

Front 12

Retrognathic jaw

Back 12

Retruded chin

Front 13

Prognathic jaw

Back 13

"Projecting chin"

Front 14

Curve of spee

Back 14

Curved alignment of occlusal plane.

When looking laterally.

Natural curve from canine to molars

Front 15

Curve of wilson

Back 15

Transverse curve (side to side) in posterior teeth from right to left

--can be viewed from back of mouth

Front 16

Sphere of monson

Back 16

Theory that an imaginary sphere could balance and rest on the occlusal plane of the mandibular teeth

Theory not proven

Front 17

Centric relation

Back 17

Way jaws fit together when you clench really hard

There is maximum contraction of the jaw muscles

--Not a natural way for teeth to occlude

Front 18

Centric occlusion

Back 18

Occlusion determined by how teeth fit together (the way you normally fit your teeth together)

-aquired occlusion

-habitual occlusion

-convenience occlusion

-intercuspal position

Front 19

Centric relation

Back 19

Muscles clenched as teeth occlude

Front 20

Centric occlusion

Back 20

Muscles are more relaxed due to a "natural fit" of teeth occluding

Front 21

Overjet

Back 21

Horizontal overlap of teeth

Front 22

Overbite

Back 22

Vertical overlap of of teeth

Front 23

EDGE to EDGE bite

Back 23

Anterior teeth "occlude" on incisal edges (not good)

Front 24

END to END bite

Back 24

When cusps of posterior teeth hit on cusps during occlusion

Feel slike bite is "off"

Front 25

Crossbite

Back 25

Can be anterior and posterior teeth

Where teeth or tooth in MAXILLA is tucked behind tooth in MANDIBLE

ANTERIOR CROSSBITE OR POSTERIOR CROSSBITE

Front 26

Open Bite

Back 26

Front teeth do not close during occlusion

Front 27

Occlusal Classifications

Back 27

1. Skeletal classification: bone and jaw alignment

2. Dental classification: alignment of teeth are used to classify bite

3. Angle's classification: combo of using the teeth and jaw to jaw relationship to classify occlusion

Front 28

Skeletal occlusion classification

Back 28

Always look at side profile/jaw of patient.

Retrognathic jaw (retruded chin) & Prognathic jaw (projecting chin)

Front 29

Angle's classification

Back 29

SCTCC USES**

CLASS 1= NEUTRAL OR IDEAL

CLASS 2= DISTOCCLUSION

CLASS 3= MESIOCCLUTION

Front 30

Back 30

Angles classification

Front 31

Molar relationship of Angle's classification

Back 31

Front 32

Interarch relationship of Angle's classification

Back 32

Front 33

Underbite

Back 33

Class 3 malocclusion

Front 34

Overbite

Back 34

Class II malocclusion

Front 35

Class 1 occlusion

Back 35

Front 36

Ideal occlusion

Back 36

Type 1 malocclusion

Front 37

Lateral excursion

Back 37

Side to side movement of mandible

Front 38

Protrusion

Back 38

Being thrusted forward or outward. Mandible can be moved outward

Front 39

Back 39

Elevation of mandible

Front 40

Back 40

Depression of mandible

Front 41

Working side

Back 41

Side to which mandible moves

Front 42

Non working side

Back 42

Opposite side from which mandible moves

Front 43

Premature contact area

Back 43

The area that touches first when the maxilla and mandible occlude

- should all touch roughly at same time

Front 44

Anterior coupling

Back 44

When anterior teeth touch during centric occlusion.

Anterior teeth usually dont touch when jaws are occluded.

Front 45

Canine rise

Back 45

During lateral excursion the only teeth that touch are canine to canine

Front 46

Group function

Back 46

During lateral excursion several teeth touch not just canines

Front 47

Stolarized molars

Back 47

The permanent maxillary molar is tipped mesially so that the distal marginal ridge of the maxillary first molar touched the mesially ridge of the mandbular second molar