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Tooth Morphology > Quiz 3 - Molars and Primary Dentition > Flashcards

Quiz 3 - Molars and Primary Dentition Flashcards

(65 cards)

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1
Q

When do 1st molars erupt?

A

Around 6 years

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2
Q

When do 2nd molars erupt?

A

Around 12 years

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3
Q

When do 3rd molars erupt?

A

17-22 years

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4
Q

What are the functions of molars?

A

-Mastication
-Vertical dimension of face
-Maintenance of arch
-Supports cheeks

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5
Q

How many lobes do maxillary molars have?

A

3-5

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6
Q

How many lobes do mandibular molars have?

A

4-5

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7
Q

What is the facial height of contour for molars?

A

Cervical third

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8
Q

What is the lingual height of contour for molars?

A

Middle third

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9
Q

Where is the mesial contact located on molars?

A

Near junction of middle/occlusal thirds

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10
Q

Where is the distal contact located at on molars?

A

Near middle of tooth

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11
Q

What molars width make up 51% of the quadrant?

A

Mandibular molars

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12
Q

What molars width make up 44% of the quadrant?

A

Maxillary molars

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13
Q

What is the widest tooth buccolingually?

A

Maxillary first molars

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14
Q

What is the name of the small 5th cusp on the maxillary 1st molars?

A

Cusp of carabelli

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15
Q

How many fossas do maxillary 1st molars have?

A

4

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16
Q

How many roots do maxillary 1st molars have?

A

3

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17
Q

How many root canals do maxillary 1st molars have?

A

4

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18
Q

What root on maxillary 1st and 2nd molars has two root canals?

A

Mesiobuccal root

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19
Q

How many pulp horns do maxillary 1st molars have?

A

4

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20
Q

How many cusps do maxillary 2nd molars have?

A

4

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21
Q

How many roots do maxillary 2nd molars have?

A

3

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22
Q

How many root canals do maxillary 2nd molars have?

A

4

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23
Q

What is a tubercle?

A

Projection of enamel

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24
Q

What molars have the largest mesiodistal dimension?

A

Mandibular 1st molars

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25
How many cusps do mandibular 1st molars have?
5
26
How many buccal grooves do mandibular 1st molars have?
2
27
What teeth have a lingual tilt of crown?
Mandibular 1st & 2nd molars
28
How many fossas do mandibular 1st molars have?
3
29
How many transverse ridges do mandibular 1st & 2nd molars have?
2
30
What molars don't have oblique ridges?
Mandibular 1st molars
31
How many roots do mandibular first molars have?
2
32
How many root canals do mandibular 1st molars have?
3 - 2 in mesial root
33
How many pulp horns do mandibular 1st molars have?
5
34
How many cusps do mandibular 2nd molars have?
4
35
What molars have a zigzag looking occlusal surface?
Mandibular 1st molars
36
What molars have a cross looking occlusal surface?
Mandibular 2nd molars
37
How many roots do mandibular 2nd molars have?
2
38
How many root canals do mandibular 2nd molars have?
3 - 2 in mesial root
39
How many pulp horns do mandibular 2nd molars have?
4
40
Why do 3rd molars have a bad reputation?
-Don't serve any function -Soft enamel -Easily decay -Crowding of anterior teeth
41
What makes 3rd molars prone to develop decay?
Wrinkled fissured occlusal surface
42
Inflammation of the tissue around the teeth -Can occur more often when operculum becomes irritated
Pericoronitis
43
What weeks prenatally have all primary teeth started to calcify?
18-20
44
When do primary central incisors erupt by?
6-10 months
45
Between what ages have all primary teeth erupted?
2-3 years
46
What is the order of primary teeth eruption?
1st: Mand. central incisors 2nd: Other incisors - Max. laterals last 3rd: First molars 4th: Canines 5th: Second molars
47
What are the functions of primary teeth?
-Chewing -Support teeth and lips - Speech -Maintaining space
48
Baby teeth decayed from bathing teeth in sugar
Baby bottle syndrome
49
Tooth erupted with a deformation spot on it
Turner's spots
50
What are some traits of primary teeth?
-Smaller -Crowns appear squeezed at CEJ -Longer roots than crowns -White -Fewer anomolies -Pulp is closer to occlusal plane -Decay faster
51
What primary teeth are wider mesiodistally than they are long?
Maxillary centrals
52
What primary teeth are longer from their incisal edge to the CEJ than they are wide?
Maxillary laterals
53
What primary teeth have a prominent cingulum?
Mandibular centrals
54
What primary teeth's incisal edge slopes distally?
Mandibular laterals
55
What primary teeth's cingulum is more developed with a deeper lingual fossa?
Mandibular laterals
56
What primary teeth have a sharper cusp when first erupted and their root is twice as long as the crown?
Maxillary canines
57
What primary teeth have a smoother lingual surface and their root is not as long as the maxillaries?
Mandibular canines
58
What do the primary second molars resemble?
permanent first molars
59
What primary teeth have a narrower buccolingual occlusal table?
Primary molars
60
What cusp is absent on primary maxillary first molars?
Disto-lingual
61
What root is the longest on primary maxillary first molars?
Lingual root
62
What teeth have oblique ridges?
-Primary maxillary 2nd molar -Permanent maxillary 1st molar
63
What primary teeth do NOT resemble any other teeth in both dentitions?
Primary mand. 1st molars
64
What teeth do primary mand. 2nd molars closely resemble?
Permanent mand. 1st molars
65
What primary tooth is the 6th from the midline?
Primary 1st molars

Tooth Morphology (6 decks)

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