Dental Anatomy Chapter 20 Occlusion

Front 1

what is the anatomical alignment of teeth and their relationship to the masticatory system

Back 1

Occlusion

Front 2

what is refer to the habitual occlusion that is dictated by the way the teeth naturally come together

Back 2

Centric Occlusion

Front 3

This is unnatural stress place on occlusion. Both teeth and periodontium may be affecte

Back 3

Occlusal trauma

Front 4

Serves as a standard for describing occlusion

Back 4

Centric occlusion

Front 5

this is defined as a voluntary position of the dentition that allows maximum contact when the teeth occlude.

Back 5

Centric Occlusion

Front 6

What are the factors affecting Occlusion

Back 6

Hereditary factors
Decayed or missing teeth
Habits--clenching or grinding
Muscle pressure and function

Front 7

What are some horizontal forces affect teeth position

Back 7

1. Tongue pushes teeth outward
2. lip and cheeks push the teeth inward

Front 8

When horizontal forces are off balanced what occurs?

Back 8

Malocclusion

Front 9

What is Overjet?

Back 9

the horizontal overlap between the two arches

Front 10

The amount of overlap of the incisal edge of the maxillary incisors over the mandibular incisors is called?

Back 10

Overbite

Front 11

This is a condition when mandibular teeth lie outside of their maxillary antagonist

Back 11

Crossbite

Front 12

What causes an Open bite?

Back 12

tongue trusting or habits such as thumb sucking

Front 13

What is this term:
view by buccal view, where the maxillary arch is convex and mandibular arch is concave

Back 13

Curve of spee

Front 14

What is this term:
Viewed from right to left through Frontal section of Arch

Back 14

Curve of Wilson

Front 15

This is the occlusion where the condyle is in the most posterior, superior,unstrained position in the glenoid fossa. It is the most stable and posterior relationship of the jaws

Back 15

centric Relation

Front 16

Centric relation is determined by the ___ and ___

Back 16

muscle and bone

Front 17

Maxillary buccal cusp generally____ mandibular buccal cusp

Back 17

Overlap

Front 18

this is the point of closure of the mandible; the mandible is in the most retruded position to which it can be carried by the musculature and ligaments

Back 18

centric relation

Front 19

This happens when teeth are in maximum intercuspation and there is voluntary occlusion

Back 19

Centric Occlusion

Front 20

Condyle of TMJ are in the most upward, backward, and unstrained position in dthe mandibular fossae

Back 20

Centric Relation

Front 21

This is a base measurement because it can be easily repeated

Back 21

Centric Relation

Front 22

These are normal areas of contacts and are checked with articulating paper during occlusal examination

Back 22

Centric Stops

Front 23

These are abnormal " flat surfaces" of the contacts

Back 23

Wear facets

Front 24

centric stops for the maxillary arch are located where?

Back 24

central and lingual

Front 25

centric stops for the mandibular arch are located where?

Back 25

central and buccal

Front 26

what is the physiological rest position of the jaw?

Back 26

2-3 millimeters of space between arches

Front 27

In Malocclusion what is the most common problem?

Back 27

crowding of teeth

Front 28

In malocclusion what is the the second most common problem?

Back 28

excessive overjet of max incisors

Front 29

Maxilla and mandible in normal relation. MB cusp of max. 1st molar in line w/buccal groove of mand. 1st molar. NEUTROCLUSION

Back 29

Class I

Front 30

Mandible is retruded in relation to maxilla, RETROGNATHIC

Back 30

Class II

Front 31

Mandible is protruded in relation to maxilla, PROGNATHIC

Back 31

Class III

Front 32

This is based on the relationship of the 1st molars to each other

Back 32

Angie's Classification

Front 33

buccal groove of mand. 1st molar is distal to the MB cusp of Max. 1st molar
DIV. I: of class II with relationship with protuded central
DIV. II of class II with relationship with lingually inclined incisors

Back 33

Class II

Front 34

buccal groove of mand. 1st molar is mesial to the MB cusp of Max. 1st molar. Considered Mesioclusion

Back 34

Class III

Front 35

Movement of mandible to the left and right characterized lateral excursions

Back 35

Lateral Excursion

Front 36

premolars and molar may stay in contact for an extended period during disclusion

Back 36

Group function

Front 37

if a single tooth contacts in occlusion rather than all posterior teeth at the same time.. what is this term

Back 37

Premature Contacts

Front 38

The ideal occlusion has:

Back 38

- Angie Class I relationship
-Flat occlusal plane with slgiht Curve of Spee
-No spaces between teeth, tight contacts
-No rotated teeth
-Crowns have slight mesial tilt

Front 39

the first permanent molar erupts directly into proper occlusion

Back 39

Terminal Step

Front 40

1st permanent molar erupts end-to-end

Back 40

Terminal plane

Front 41

this is the most common of the primary molar relationship

Back 41

mesial step
**distal of mand. 2nd primary molar mesial to maxillary counterpart

Front 42

2nd primary molar flush on distal surface

Back 42

Flush Terminal plane

Front 43

Mandibular molars distally placed compared to maxillary molar

Back 43

Distal step

Front 44

what are parafunctional habits?

Back 44

Clenching
Bruxism
Abfraction