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BDS1 - BAMS - Tooth Morph > Match the Sentences > Flashcards

Flashcards in Match the Sentences Deck (38)
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1

Mesial surface is convex only in its occlusal half, its cervical half is concave This concavity continues on to the cervical region of the root - it is called the canine fossa distal side is very convex

upper first premolar

2

The two cusps are separated by a sharp fissure running mesio-distally which does not reach the marginal ridges

upper second premolar

3

which incisors has a more mesio-distally narrowed cervical region

upper lateral

4

which tooth has its mesial marginal ridge more cervical than its distal marginal ridge

lower first premolar

5

The two cusps are similar in height due to the reduction of the buccal cusp

upper second premolar

6

occlusal surface is roughly oval buccal cusp is wider and higher than the lingual cusp

upper first premolar

7

occlusal surface is diamond shaped

upper 6

8

The mesial fissure has a right angled bend - one arm runs towards the mesial surface but does not continue onto it and the other runs towards and on to the buccal surface

upper 6

9

The ridge and fissure separate the small disto-palatal cusp from the rest of the occlusal surface

upper 6

10

small cingulum in the cervical area and an almost flat incisal half

lower lateral

11

A tubercle of Carabelli may be present on the palatal surface of the mesio-palatal cusp

upper 6

12

3 roots are much less divergent palatal root is often partially fused with either of the buccal roots

upper 7

13

which tooth has the largest crown of the 4 incisors and is almost as wide as it is long

upper central

14

tooth has a pit on its buccal surface which is at increased risk of caries

lower 6

15

The occlusal surface is almost square The fissure pattern is + shaped

lower 7

16

distal side of the crown flares out at an angle from the root

lower lateral

17

which tooth has a cone shaped root which is usually round in cross section

upper central

18

The distal root is not visible from the mesial aspect as the mesial root is usually curved, grooved and broader than the distal root

lower 6

19

single root is flattened mesiodistally giving an oval cross section

upper lateral

20

groove starting on the buccal surface deepens into the transverse fissure across the occlusal surface and ends as a groove on the lingual surface - in the surface of the crown it deepens further to form a pit

lower 6

21

buccal surface of the tooth is strongly inclined lingually so that its tip lies almost above the centre of the tooth

lower first premolar

22

single palatal root is the longest and strongest being slightly compressed bucco-lingually

upper 6

23

The occlusal surface is more symmetrical and smaller than the lower first molar There are usually only four cusps of similar size

lower 7

24

crown is wedge shaped and leans lingually when viewed from mesial/distal aspect

lower lateral

25

the contact point with the canine mesially takes the form of a smaller semicircular arc compared with a broad contact area distally where it contacts the second premolar

lower first premolar

26

mesial root is broader than distal root but distal root is usually longer

lower 7

27

which tooth has a distal fossa that is generally larger than the mesial fossa

lower second premolar

28

has a longitudinal ridge which runs from the cusp tip to the cingulum and a labial ridge

upper canine

29

The shape of the crown is more triangular The disto-palatal cusp is greatly reduced and it may be absent

upper 7

30

what tooth sometimes have mamellons

upper central

31

There is a slight mesial displacement of the lingual cusp but the occlusal surface is more symmetrical with only a slight mesial displacement of the lingual cusp

upper second premolar

32

lingual surface is concave-convex and has 2 pronounced marginal ridges

upper lateral

33

The distal root depression is deeper than the mesial depression (the opposite of the maxillary first premolars)

upper second premolar

34

the longer diagonal extends from the mesio-buccal to the disto-palatal cusp and emphasised by the presence of a strong ridge of enamel

upper 6

35

The two cusps are seperated by a sharp fissure running mesiodistally which does not reach the distal marginal ridge but extends to the mesial marginal ridge on to the mesial surface

upper first premolar

36

buccal cusp looks like that of a canine

upper first premolar

37

fissures join to make an H shape

upper 6

38

where marginal ridges meet at the cervix they enclose a fossa/depression which can often be prone to caries

upper lateral