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Dental Anatomy > Introduction to Occlusion > Flashcards

Introduction to Occlusion Flashcards

1
Q

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

A

Occlusion

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2
Q

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

A

primary dentition

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3
Q

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

A

True

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4
Q

Any deviation from normal occlusion is called what?

A

malocclusion

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5
Q

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

A

primate spaces

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6
Q

At what age do you begin to see primate spaces?

A

5

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7
Q

Where are the largest primate spaces located in the maxillary?

A

between canines and laterals

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8
Q

Where are the largest primate spaces located in the mandibular?

A

between canines and 1st molars

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9
Q

Where do the permanent 1st molars erupt?

A

just distal to the primary 2nd molars

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10
Q

True or False?

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

A

True

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11
Q

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

A

leeway spaces

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12
Q

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

A

mesial step

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13
Q

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

A

flush terminal plane

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14
Q

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

A

distal step

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15
Q

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

A

True

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16
Q

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

A

normal

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17
Q

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

A

premature

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18
Q

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

A

late

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19
Q

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

A

False, this is the curve of Wilson

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20
Q

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

A

Sphere of Monson

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21
Q

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

A

centric relation and centric occlusion

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22
Q

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

A

Centric Occlsuion

23
Q

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

A

Centric Relation

24
Q

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

A

Centric relation

25
Q

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

A

True

26
Q

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

A

Dynamic Occlusion

27
Q

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

A

Horizontal overlap/overjet

28
Q

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

A

vertical overlap/overbite

29
Q

What are the 5components of molar occlusion assessment?

A

molar relationship, canine relationship, overbite, overjet, midline

30
Q

What is the horizontal measure of anterior overlap?

A

overjet

31
Q

What is the horizontal distance of anterior teeth in crossbite?

A

underjet

32
Q

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

A

True

33
Q

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

A

Maximum intercuspation

34
Q

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

A

Interdigitation

35
Q

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

A

True

36
Q

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

A

Class I

37
Q

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

A

Class I

38
Q

What are the different kinds of inter-arch malocclusions?

A

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

39
Q

What are the different kinds of intra-arch malocclusions?

A

supraversion, infraversiion, drifted mesial, linguoversion, torsoversion

40
Q

Malocclusions above the occlusal plane are called ________.

A

supraversion

41
Q

Malocclusions below the plane are called _____.

A

infraversion

42
Q

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

A

linguoversion

43
Q

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

A

Torsoversion

44
Q

A mesognathic profile is associated with ______.

A

Class I Occlusion

45
Q

Retrognathic profile is associated with ______.

A

Class II Occlusion

46
Q

Prognathic profile is associated with _____.

A

Class III Occlusion

47
Q

Extractions and large maxillary frenums can cause ______.

A

open contacts

48
Q

Extractions can cause ______.

A

drifting

49
Q

Disease can cause _____.

A

pathologic migration

50
Q

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

A

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

51
Q

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

A

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

52
Q

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

A

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

53
Q

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

A

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

54
Q

What throws off molar relationship and is classified using canines?

A

paritally anodontia

Dental Anatomy (6 decks)

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