Brainscape's Knowledge GenomeTM

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


See full index

BAMS > Tooth Morphology > Flashcards

Tooth Morphology Flashcards

1
Q

What is the cheek side of the tooth?

A

Buccal

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

What is the opposite to the cheek side of the tooth?

A

Palatal if upper

Lingual if lower

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

What is the orientation of the teeth towards the front of the head?

A

Mesial

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

What is the orientation of the teeth towards the back of the head?

A

Distal

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

What is cingulum?

A

Portion of the teeth that forms a convex protuberance at the cervical third of the anatomic crown

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

What distinguishes an upper/lower incisor?

A

Uppers have roughly rectangular labial surface

Lowers have triangular or fan shaped labial surface

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

For upper incisors how do you determine whether its central/lateral?

A

1st is larger

2nd is small/narrow

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

For upper incisors how do you determine whether its R/L of mouth?

A

Mesial profile of crown is in straight line with root, distal side flares

Junction of mesial and incisal edge is sharp, distal is rounded

Cingulum is skewed distally

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

For lower incisors how do you identify whether its 1st/2nd?

A

1st is smaller and crown is almost symmetrical

2nd is larger and crown shows more pronounced distal flare

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

For lower incisors how do you determine left or right?

A

Mesial profile of crown is in straight line with root, distal side flares

Junction of mesial and incisal edge is sharp, distal is rounded

Cingulum skewed distally

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

How do you distinguish an upper or lower canine?

A
  • Crown shape - upper canine has stout crown with broad-diamond shaped surface and pointed cusp - lower canine has high, narrower crown with less pointed cusp
  • Crown-root - Upper canine has crown set in straight line with root, lower is at an angle
  • Level of ACJ - upper has ACJ at same level on labial and lingual sides
    Lower has enamel extending further apically on labial side
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How do you determine left or right?

A
  • Mesial slope is shorter
  • Mesial profile of crown is straighter and in line with root, distal side bulges out into a marked convexity and forms angle
  • Cingulum skewed distally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How do you determine whether upper/lower premolar?

A

Shape of occlusal surface - upper oval, lower round

Crown-root angle - Upper straight line, lower curved buccal

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

For an upper premolar, how do you determine whether its first or second?

A

Upper 1st has larger cusps, buccal larger than lingual
Upper 1st has marked concavity “canine fossa” on mesial surface

Upper 2nd has smaller cusps than 1st
Upper 2nd has flat mesial surface

Upper 1st sometimes has 2 roots
Upper 2nd usually has one

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

For upper premolar how do you determine orientation in mouth?

A

Proximal surfaces - upper 1st has concavity (CANINE FOSSA) on mesial surface, upper 2nd has flat mesial surface/convex distal surface

Lingual (palatal) cusp - both upper premolars show mesial displacement of lingual cusp, though this is less marked in second premolar

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

For lower premolars how can you distinguish 1st/2nd?

A

Lower 1st premolar has large buccal cusp and very small lingual cusp

Lower 2nd has one or two cusps more closely approximating the buccal cusp in height

17
Q

For lower premolars how can you distinguish left or right orientation?

A

Lower 1st has flattened area on mesio-lingual aspect and often fissure running from mesial pit over on to this surface
Lingual cusp is often displaced slightly distally

Lower 2nd has mesial displacement of single lingual cusp, or if 2 cusps, mesial is larger

18
Q

How can you distinguish upper or lower molar?

A

Upper have 3 or 4 cusps with 3 roots

Lower has 4 or 5 cusps with 2 roots

19
Q

How can you distinguish upper 1st molar?

A

Has 4 cusps
Occlusal surface rhomboidal
Roots are long, well-shaped and separated

20
Q

How can you distinguish upper 2nd molar?

A

Varying degrees of reduction of disto-lingual cusp, which can either be slightly reduced/reduced/absent

Occlusal surface usually compressed mesiodistally, or may be triangular

Roots are shorter. more irregular, may be partly fused

21
Q

How can you distinguish upper 3rd molar?

A

Shows greater degree of reduction of disto-lingual cusp, which may be considerably reduced/absent

May be compressed/triangular

Shorter roots, more irregular, or completely fused

22
Q

How can you distinguish lower 1st molar?

A

Usually has 5 cusps
Crown regular and well shaped
Roots are long, well-shaped and well-separated

23
Q

How can you distinguish lower 2nd molar?

A

Usually 4 cusps
Crown regular
Roots are shorter, more irregular and partly fused

24
Q

How can you distinguish lower 3rd molar?

A

May have 3-6 cusps
Crown usually irregular
Roots shorter, more irregular, could be completely fused

25
Q

How do you identify primary incisors?

A

Same as permanent incisors

26
Q

How do you identify primary canines?

A

Often very difficult to identify as point of cusps may be placed centrally, or skewed mesially or distally

27
Q

How do you identify primary molars?

A

1st molars unlike any permanent tooth

2nd primary molars same morphology as 1st permanent molars, with 4 cusps in maxilla and 5 in mandible

28
Q

How do you identify upper/lower and left/right in 1st primary molars?

A

Upper - quadrilateral in shape, wider buccolingually
Lower - compressed buccolingually and longer mesodistally

Molar tubercle is always found at mesiobuccal corner of cervical margin

29
Q

How do you identify 2nd primary molar orientation?

A

Same as for 1st molar in permanent dentition

30
Q

When do primary teeth begin mineralisation?

A

4-6 months

31
Q

Which primary teeth are the first to erupt and when?

A

Central incisors (A) - 6-7 months

32
Q

Which primary teeth are second to erupt and when?

A

Central incisors (B) - 7-8 months

33
Q

Which primary teeth are third to erupt and when?

A

1st molars (D) - 12 months

34
Q

Which primary teeth are fourth to erupt and when

A

Canines (C) - 18 months

35
Q

Which primary teeth are last to erupt and when?

A

2nd molars (E) - 24 months

36
Q

In what order do the permanent dentition erupt?

A 
First molars - 6y
Central incisors - 7y
Laterals - 8y
Canines - 9y
Premolars - 10y
Second molar -12y
Third molars - 18y
37
Q

When do the permanent teeth begin mineralisation?

A 
First molars - at birth
Anteriors - 3-5 months (upper laterals 11 months)
Premolars - 2y
2nd molars - 3y
3rd molars - 9y

BAMS (14 decks)

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