Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Tooth Morphology > Permanent Teeth > Flashcards

Permanent Teeth Flashcards

1
Q

How do you tell which side is mesial in a maxillary central incisor?

A

Sharp right angle looking from labial side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How do you tell which side is distal in a maxillary central incisor?

A

Rounded edge/corner when looking from labial side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Describe the labial surface of a maxillary central incisor

A

Large

Flattened

“Spade-like”

2 grooves

Convex cervical region

Mesial edge makes a sharp right angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Describe the palatal surface of a maxillary central incisor

A

Large concave area

“Shovel-shaped”

Marginal ridges

Large cingulum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How is the maxillary lateral incisor different to the maxillary central incisor?

A

Smaller crown

Longer root in proportion

Pit in base of cingulum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How can you tell which side is distal in a maxillary lateral incisor?

A

Root curves distally

Curved edge is distal (right angled side is mesial)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How do mandibular incisors compare with maxillary incisors?

A

Similar mesial and distal edges

Smaller, narrower, longer

More flattened root

Poorly developed cingulum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How can you tell which side is distal on a mandibular central incisor?

A

Groove on distal side on root

Straighter distal side (more acute mesially)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How can you tell which side is mesial on a mandibular central incisor?

A

Groove on distal side of root

More acute mesially

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How is the labial surface of a mandibular central incisor often described as?

A

Chisel-shaped

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How is the labial surface of a mandibular lateral incisor often described as?

A

Fan-shaped

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How does a mandibular lateral incisor compare with a mandibular central incisor?

A

Wider towards incisal edge

Crown is twisted distally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How can you tell which side is mesial on a mandibular lateral incisor?

A

Straighter mesial side (more acute distally)

Crown pulled/twisted back distally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How can you tell which side is distal on a mandibular lateral incisor?

A

More acute distally

Crown pulled/twisted back distally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How many cusps does a canine have?

A

One

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe the labial surface of a maxillary canine

A

More curved than incisors

Longer distal slope than mesial slope (large swelling on distal side)

Large cusp (1/2 to a 1/3 of crown)

17
Q

Describe the palatal surface of a maxillary canine

A

Marginal ridges

Large cingulum

Central ridge (and fossae)

18
Q

How does the mandibular canine differ from the maxillary canine?

A

Smaller cingulum

Crown tipped towards tongue

19
Q

How can you tell which side is mesial in a mandibular canine?

A

More angular joining of mesial and labial surfaces (than distal and labial)

20
Q

How can you tell the difference between upper and lower premolars?

A

Uppers have an egg/oval occlusal surface whereas lowers have a more circular shape

Uppers have more prominent cusps

21
Q

What are the differences between the maxillary premolars?

A

Roots are better developed in first premolar

Canine fossa in first premolar

Cusps are more equal in size in second premolar

More parallel sides in second premolar

Fissure is less extensive and doesn’t usually cross mesial ridge in second premolar

22
Q

Describe the occlusal surface of a maxillary first premolar

A

Egg-shaped, wider at buccal end

Fissure between two cusps which is continuous with a groove over the mesial marginal ridge

Larger/taller buccal cusp than palatal

23
Q

Describe the occlusal surface of a maxillary second premolar

A

Oval-shaped

Fissure/pit between cusps may extend over mesial ridge

Buccal cusp is larger than palatal but cusps are fairly equal in height

24
Q

How can you tell which side is mesial in a maxillary premolar?

A

Palatal cusp tipped mesially

Fissure may extend over mesial ridge

25
Q

Describe the occlusal surface of a mandibular first premolar

A

Circular

Large buccal cusp and small lingual cusp, tipped towards tongue

Prominent central ridge between cusps

Larger distal fossa

Mesial fossa runs on to mesial-lingual surface

26
Q

Describe the occlusal surface of a mandibular second premolar

A

Circular

Large buccal cusp and better developed lingual cusp(s) than first premolar, tipped towards tongue

Maybe have one or two lingual cusps

27
Q

How can you tell which side is mesial in a mandibular second premolar?

A

Larger lingual cusp is tipped/placed mesially

28
Q

How many roots do the maxillary molars usually have?

A

3

29
Q

How many roots do the mandibular molars usually have?

A

2

30
Q

Describe the occlusal surface of a maxillary first molar

A

Rhomboidal

4 cusps: 2 palatal and 2 buccal

Largest cusp is mesial-palatal

Oblique ridge from mesial-palatal to distal-buccal cusps

Distal and mesial fossae

31
Q

Describe the occlusal surface of a maxillary second molar

A

Square

4 cusps: 2 palatal and 2 buccal

Largest cusp is mesial-palatal

Oblique ridge from mesial-palatal to distal-buccal cusps

Distal and mesial fossae

Diminishing distal-palatal cusp

32
Q

Describe the occlusal surface of a maxillary third molar

A

Triangular

3 cusps usually: 1 palatal and 2 buccal (distal-palatal small/removed)

Largest cusp is mesial-palatal

Oblique ridge from mesial-palatal to distal-buccal cusps

33
Q

What is the cusp of Carabelli?

A

Cusplet on side of mesial-palatal cusp of a maxillary first molar

34
Q

How could you tell the difference between a maxillary first and second molar?

A

First molar may have:

Cusp of Carabelli

Groove over palatal surface to a developmental groove

Three separate roots (start fusing in second molar)

35
Q

Describe the occlusal surface of a mandibular first molar

A

Oblong

5 cusps: one at each corner and extra distal-buccal cusp

Mesial cusps are slightly larger

36
Q

Describe the occlusal surface of a mandibular second molar

A

Oblong

4 cusps: one at each corner

Cross-shaped fissure pattern

Mesial cusps are slightly larger

37
Q

Describe the occlusal surface of a mandibular third molar

A

Very variable - 4 or 5 cusps

Very complex fissure pattern

38
Q

What kind of fissure pattern does the mandibular first molar have?

A

Dryopithecus

Tooth Morphology (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions