mandibular incisor Flashcards Preview

dental anatomy > mandibular incisor > Flashcards

Flashcards in mandibular incisor Deck (69):
1

covered by enamel vs covered by cemenum

anatomic crown vs. anatomic root

 

2

The portion of a tooth that is above the gingival margin.

Clinical Crown

3

Narrowest and shortest of all permanent teeth

Mandibular Central Incisor

4

Mandibular Central Incisor

Crown to root ratio approaching one to one

5

single canal from crown to apex

type 1 vertuccir

A image thumb
6

pulp separates in two near the crown and joins back together at apex to form one root canal

type 2 vertucci classification

A image thumb
7

root separate into 2 distinct canals and extends to root apex separately

type 4 vertucci

A image thumb
8

starts as one root canal in pulp chamber and divides into 2 as it reaches apical foramen

type 3 vertucci 

A image thumb
9

 slightly larger in all dimensions than central incisor and not bilaterally symmetric

Mandibular Lateral Incisor

10

Crown is bilaterally symmetrical (mesial and distal halves are almost identical)

Mandibular Central Incisor

11

tf Mandibular Central Incisor

dont have mamelon

 

f

Mamelons when newly erupted

12

Mandibular Central Incisor

Incisal edge straight; ----- to long axis of tooth

Incisal edge straight; perpendicular to long axis of tooth

13

tf Mandibular Central Incisor;

round MI and DI angles

Sharp MI and DI angles (~90°)

14

tf Mandibular Central Incisor

Facial surface quite rough 

F

Facial surface quite smooth

15

correct the statement 

Mandibular Central Incisor Root long , straight, spherical, very wide mesiodistally

Mandibular Central Incisor  Root short, straight, conical, very narrow mesiodistally

16

Relatively smooth lingual aspect of Mandibular Central Incisor

T

17

Mandibular Central Incisor-->

Crown tapers to the lingual on lingual surface

(not root)

T

Mandibular Central Incisor-->

Crown tapers to the lingual (not root)

18

19

max incisors have Less prominent cingulum, marginal ridges, and lingual fossa than Mandibular Central Incisor

F

Mandibular Central Incisor have

Less prominent cingulum, marginal ridges, and lingual fossa than maxillary incisors

20

Mandibular Central Incisor;

Incisal edge slightly lingual to bisecting line(mesial aspect)

T

21

Maxillary Central Incisor

triangular or wedge shaped

22

tf Mandibular Central Incisor

have Pronounced CEJ line (less than maxillary central)

t

23

 S – shaped on lingual (slightly convex cingulum; slightly concave fossa)

Mandibular Central Incisor

24

Root broad faciolingually

Mandibular Central Incisor

25

Mandibular Central Incisor distal aspect

CEJ less pronounced than mesial

26

Incisal edge straight and slightly lingual to center

Mandibular Central Incisor

27

Incisal edge perpendicular to faciolingual bisecting line

Mandibular Central Incisor

28

tf mandib. facial incisor is Wider mesiodistally than

faciolingually

f

Wider faciolingually than mesiodistally

29

tf central mandib incisor have a trapezoidal shape

f

Roughly triangular crown outline form

30

tf Mandibular Central Incisor

Cingulum centered but may be slightly offset distally

T

31

Mesial and distal portions symmetrical

Mandibular Central Incisor incisal view

32

Single, short, and straight

root of Mandibular Central Incisor

 

33

Narrow mesiodistally

Broad faciolingually

root of 

Mandibular Central Incisor

34

narrow, elongated ribbon shaped pulp

Cervical cross-section of Mandibular Central Incisor

35

tf Mandibular Central Incisor have only one pulp canal

f Often two pulp canals

(one facial, one lingual)

36

Hour glass shape

Mandibular Central Incisor

37

Mandibular Central Incisor

Narrow mesiodistally

Broad faciolingually

38

tf Mandibular Central Incisor only have mesial root concavities

f

Mandibular Central Incisor

Usually mesial and distal root concavities

39

facial and lingual pulp canal

Mandibular Central Incisor

40

Erupts at age 7-8

Mandibular Lateral Incisor

41

tf Mandibular Lateral Incisor isnt bilat symmtericall

T

42

Tf Mandib. Central incisors slightly larger in all dimensions than Mandibular Lateral Incisor

f

Mandibular Lateral Incisor slightly larger in all dimensions

43

facial aspect of Mandibular Lateral Incisor

Incisal edge slopes gingivally toward distal

44

tf Mandibular Lateral Incisor

 MI angle slightly more rounded than DI angle

 

Mandibular Lateral Incisor

DI angle slightly more rounded than MI angle

45

tf

Mandibular Lateral Incisor(facial view)

Mesial outline straighter than distal outline

T

46

tf

Root apex may curve mesially in Mandibular Lateral Incisor

 

f distally

47

Facial surface smooth and flat in the incisal 2/3

Mandibular Lateral Incisor

48

smooth surface lingual anatomy

Mandibular Lateral and central Incisor

49

Cingulum is slightly distal to the center of the crown

Mandibular Lateral Incisor

50

Crown tapers towards lingual

Mandibular Lateral Incisor

51

tf in 

Mandibular Lateral Incisor

Distal marginal ridge is slightly shorter than mesial marginal ridge due to slope

t

52

CEJ line less pronounced

Mandibular Lateral Incisor< central incisor

53

facial HOC and lingual HOC in cervical third

mandibular lateral and central incisor

54

incisal edge lingual to bisecting line(mesial aspect)

mandib. central and lat incisor

55

root broad faciolingually and concavity present on mesial surface

mandib lateral incisor

56

CEJ line less curved than mesial

Mandibular Lateral Incisor

(distal view)

57

distal surface is shorter incisogingivally than mesial surface

Mandibular Lateral Incisor

58

Mandibular Lateral Incisor

crown is “twisted”

59

More of incisal ridge and facial surface shows from distal aspect

on Mandibular Lateral Incisor

60

deep concavity on distal surface

Mandibular Lateral Incisor

61

Root short, straight, conical, very narrow mesiodistally

Mandibular Central and lateral Incisor

62

Crown appears as if twisted at its base

Mandibular Lateral Incisor(incisal view)

63

tf

Mandibular Lateral Incisor

Incisal edge not perpendicular to faciolingual bisecting line;

F

Incisal edge not perpendicular to faciolingual bisecting line;

64

distal aspect of incisal edge more lingually positioned in 

Mandibular Lateral Incisor

65

Mandibular Lateral Incisor

Cingulum more noticeably displaced toward the distal

66

central incisor root; may incline distally

root of Mandibular Lateral Incisor

67

May have shallower root concavities on mesial and distal

Mandibular Lateral Incisor

68

Mandibular Lateral Incisor

cervical cross section

longer faciolingualy than distal mesially

69