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Dentitions Flashcards

1
Q

What are the two sets of dentition

A

Primary and permanent

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2
Q

What is dentition?

A

Natural teeth in the dental arch

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3
Q

What are the 3 dentition periods?

A

Primary, mixed, permanent

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4
Q

What are primary teeth?

A

Set of 20 teeth. Can be called baby teeth or deciduous. Comes out around 6 months-6 years old

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5
Q

What are permanent dentition?

A

Set of 32 teeth. Begins around age 12 and complete by age 14-15 except for 3rd molars. Also succedaneous - permanent replaced primary teeth. Molars are NOT succedaneous; premolars replace primary molars

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6
Q

What are mixed dentition?

A

Takes place between age 6-12; some primary and permanent teeth; permanent is larger than primary teeth

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7
Q

Maxillary arch

A

Upper arch, not moveable

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8
Q

Mandibular arch

A

Lower arch, moveable arch

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9
Q

Occlusion

A

When teeth of both arches are in contact, “biting down”

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10
Q

Quadrants

A

When mouth is divided into 4 parts
Max right quad; max left quad; man right quad; man left quad

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11
Q

Sextants

A

1/6th of the dentition; 3 sextants in each arch; left and right posterior (premolars-molars) and anterior incisors-canines)

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12
Q

Anterior

A

Front teeth; form a smooth curving arc

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13
Q

Posterior

A

Back teeth; aligned in a straight line

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14
Q

Permanent dentition is divided into 4 types of teeth

A

incisors, cuspids, premolars, molars

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15
Q

Primary dentition has what types of teeth

A

Incisors, cuspids, molars

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16
Q

What are incisors?

A

Design to cut; thin, sharp, and incisal edge

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17
Q

What are cuspids/canines?

A

Used for cutting and tearing food; known as cornerstone of the dental arch; longest teeth and last to lose

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18
Q

What are premolars?

A

Known as bicuspids; hold and grind food

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19
Q

What are molars?

A

1,2,3 molars; used for grinding food; erupt behind primary molars

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20
Q

What are the 5 surfaces of teeth?

A

Facial/Buccal; lingual; incisal/occlusal; mesial, distal

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21
Q

What is facial surface?

A

Surface of anterior teeth facing lips; referred as labial surfaced

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22
Q

What is buccal surfaces?

A

Facial surface of posterior teeth closest to the inner cheek

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23
Q

Lingual surface

A

Surface facing the tongue

24
Q

Proximal

A

Surfaced that are adjacent to each other in the same arch

25
Mesial
Facing toward the midline of front of the mouth
26
Distal
Facing away from the midline or towards the back of the mouth
27
Occlusal
Chewing surfaces of posterior teeth
28
Incisal
Cutting edge of anterior teeth
29
Interproximal space
Area or space between adjacent tooth surfaces (space between two teeth if you think of bones)
30
Concave
Curvature that means inwards (inside of a bowl)
31
Convex
Curvature that extends outwards (outside of a bowl)
32
Facial/lingual contours
Provides natural passageway for food, protects gingiva, stimulates gingiva
33
Mesial/distal contours
Help determine normal contact and embrasure form; tend to be self cleansing; contribute to tooth’s self-preservation
34
Contact area
Mesial and distal surfaces of a tooth that touch each other in the same arch
35
Contact point
Exact point where teeth actually touch; purposes: prevents trapping of food, stabilizes teeth in either arch, protects interproximal gingiva tissues from trauma during chewing
36
Height of contour
Bulge or widest point on a crown; all surfaces have a height of contour; mesial & distal contact areas are the height of contour on proximal surfaces
37
Embrasures
Triangular shape beyond contact area of tooth (V shaped valley between adjacent teeth) located: incisal/occlusal, lingual, facial, gingiva (apically)
38
Line angle
Formed by junction of 2 surfaces; named after 2 surfaces involved
39
Point angle
Formed by junction of 3 surfaces; named after 3 surfaces involved
40
Division of thirds: crown mesiodistal
Mesial, middle, distal (front view of tooth)
41
Division of thirds: crown buccolingual
Facial, middle, lingual (side view of tooth)
42
Division of thirds: crown occlusocervical
Occlusal; middle; cervical (crown of tooth/visible tooth)
43
Division of thirds: root
Apical, middle, cervical thirds
44
What is occlusion?
Relationship between the max and man teeth when jaws are fully closed
45
What’s centric occlusion?
Occurs when jaws are closed in a position that produces maximal stable contact between occluding surfaces of max. & man. Teeth
46
What’s malocclusion?
Abnormal or malpositioned relationship of max and man teeth when centric occlusion
47
What’s functional occlusion?
Describe contact or the teeth during biting and chewing movements
48
What’s Angles classification
Describe & classify occlusion and malocclusion; uses perm max. 1st molar as key to occlusion
49
Angles classification: class I
Neutroclussion ideal relationship; MB cusp of max 1st molar occluded w/ MB groove of man 1st molar Anterior/individual teeth may be malaligned
50
Angles classification: class II
Distoclusion MB cusp of max 1st molar is mesial to MB groove of man 1st molar Man arch is distal to max arch Protrusion look
51
Angles classification: class II D1
Labioverison: the inclination of the teeth to extend facially beyond the normal overlap of the incisal edge of the max incisors over the man incisors
52
Angles classification: class II D2
Linguoverison: the position of the max incisors behind the man incisors Max incisors slightly overlap the front of the man incisors
53
Angles classification: class III
Malocclusion or mesioclusion MB cusp of max 1st molar occluded in space behind D cusp of man 1st molar Mandible must be in an abnormal mesial relationship to the maxilla Mandible protrudes
54
Curve of spee
The curvature formed by the max and man arches in occlusion Upward curvature; resembles smile line O plane of teeth on man arch appears concave O plane of teeth on max arch appears convex
55
Curve of Wilson
Cross arch curvature of the posterior occlusal plane Downward curvature of the arc drawn across Mandibular first molars

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