Introduction to Occlusion

Question 1

What is the tooth to tooth relationship between the maxillary and mandibular teeth when the jaws are in a fully closed position?

Answer 1

Occlusion

Question 2

Oral motor behavior develops and masticatory skills are acquired at what stage?

Answer 2

primary dentition

Question 3

True or False? The occlusion of the erupting permanent teeth is dependent on the occlusion/positioning of the primary teeth.

Answer 3

True

Question 4

Any deviation from normal occlusion is called what?

Answer 4

malocclusion

Question 5

Spaces between primary teeth that allow for the permanent teeth to erupt without crowding are called?

Answer 5

primate spaces

Question 6

At what age do you begin to see primate spaces?

Answer 6

5

Question 7

Where are the largest primate spaces located in the maxillary?

Answer 7

between canines and laterals

Question 8

Where are the largest primate spaces located in the mandibular?

Answer 8

between canines and 1st molars

Question 9

Where do the permanent 1st molars erupt?

Answer 9

just distal to the primary 2nd molars

Question 10

True or False?

Permanent 1st molars erupt and move mesial (mesial drift) as the primary molars are lost.

Answer 10

True

Question 11

The fact that deciduous molars and canines are wider than permanent premolars and canines is referred to as what?

Answer 11

leeway spaces

Question 12

In most children, mandibular molars are more mesial than maxillary molars. This is called _____.

Answer 12

mesial step

Question 13

When the mandibular molars and maxillary molars are even with each other, this is called ________.

Answer 13

flush terminal plane

Question 14

In a very uncommon case, mandibular molars are more distal than maxillary molars. This is called ______.

Answer 14

distal step

Question 15

True or False? Primary teeth do not have much of a curve of spee, but it increases as people age and develop permanent dentition.

Answer 15

True

Question 16

When the curve of spee starts around the mesial of the 1st molar, it is referred to as _____.

Answer 16

normal

Question 17

When the curve of spee starts closer to the premolars, it is referred to as _______.

Answer 17

premature

Question 18

When the curve of spee starts closer to the posterior of the 1st molar, it is referred to as _______.

Answer 18

late

Question 19

True or False? The curve of spee helps to keep food on the occlusal plane so you can chew it effectively.

Answer 19

False, this is the curve of Wilson

Question 20

The theory that every occlusal edge (combining curve of spee and wilson) should fit into a 3D sphere is called ______.

Answer 20

Sphere of Monson

Question 21

What are the two possible relationships that occur when the jaws are completely closed together?

Answer 21

centric relation and centric occlusion

Question 22

What is the relationship of the upper teeth to the lower teeth?

Answer 22

Centric Occlsuion

Question 23

What is the relationship of the upper jaw to the lower jaw?

Answer 23

Centric Relation

Question 24

What is defined as the most retruded relationship of the mandible to the maxilla?

Answer 24

Centric relation

Question 25

True or False? Ideally, when the mandible is in centric relation, the dentition should be in the centric occlusion.

Answer 25

True

Question 26

What is the functional occlusion (when the mouth is moving)?

Answer 26

Dynamic Occlusion

Question 27

What is a characteristic of centric occlusion in which the entire maxilla overlaps the mandible?

Answer 27

Horizontal overlap/overjet

Question 28

What is a characteristic of centric occlusion in which you have overlap of anterior teeth?

Answer 28

vertical overlap/overbite

Question 29

What are the 5components of molar occlusion assessment?

Answer 29

molar relationship, canine relationship, overbite, overjet, midline

Question 30

What is the horizontal measure of anterior overlap?

Answer 30

overjet

Question 31

What is the horizontal distance of anterior teeth in crossbite?

Answer 31

underjet

Question 32

True or False? Overbite and overjet are measured with a probe?

Answer 32

True

Question 33

What characteristic of centric occlusion is the maximum closure of the max and mand arches?

Answer 33

Maximum intercuspation

Question 34

What characteristic of centric occlusion is the maximum touching of max and mand arches?

Answer 34

Interdigitation

Question 35

True or False? Ideally, the max and mand midlines should line up.

Answer 35

True

Question 36

What class relationship has MB cusp of max 1 st molar lining up with MB groove of mand 1st molar?

Answer 36

Class I

Question 37

What class has max canine line up in between mand canine and mand 1st premolar?

Answer 37

Class I

Question 38

What are the different kinds of inter-arch malocclusions?

Answer 38

Midlines off center, posterior crossbite, anterior crossbite, open bite,

Question 39

What are the different kinds of intra-arch malocclusions?

Answer 39

supraversion, infraversiion, drifted mesial, linguoversion, torsoversion

Question 40

Malocclusions above the occlusal plane are called ________.

Answer 40

supraversion

Question 41

Malocclusions below the plane are called _____.

Answer 41

infraversion

Question 42

When the tooth is positioned more lingually in the arch form, it is referred to as ____.

Answer 42

linguoversion

Question 43

When the tooth is rotated or twisted, it is referred to as ______.

Answer 43

Torsoversion

Question 44

A mesognathic profile is associated with ______.

Answer 44

Class I Occlusion

Question 45

Retrognathic profile is associated with ______.

Answer 45

Class II Occlusion

Question 46

Prognathic profile is associated with _____.

Answer 46

Class III Occlusion

Question 47

Extractions and large maxillary frenums can cause ______.

Answer 47

open contacts

Question 48

Extractions can cause ______.

Answer 48

drifting

Question 49

Disease can cause _____.

Answer 49

pathologic migration

Question 50

What are 6 conditions that can occur in Class I malocclusion?

Answer 50

malposition, crowded anterior teeth, protruded or retruded max incisors, anterior crossbite, mesial drift

Question 51

What are 6 conditions that can occur in Class II malocclusion, division I?

Answer 51

mandible retruded/max incisors protruded, deep overbite, excessive overjet, abnormal muscle function, short mandible, short upper lip

Question 52

What are 4 conditions that can occur in Class II malocclusion, division II?

Answer 52

mandible retruded/one or more max incisors retruded, max laterals protrude/max centrals retrude, crowded max anterior teeth, deep overbite

Question 53

What are 3 conditions that can occur in Class III malocclusion?

Answer 53

anterior crossbite, max and mand incisors edge to edge occlusion, crowded mand incisors

Question 54

What throws off molar relationship and is classified using canines?

Answer 54

paritally anodontia