Permanent Mandibular Incisors Flashcards Preview

Dental Anatomy > Permanent Mandibular Incisors > Flashcards

Flashcards in Permanent Mandibular Incisors Deck (48):
1

how does the mandibular central incisor compare to all other teeth with respect to its size?

it is the smallest of all the teeth

2

the crown of the mandibular central incisor has slightly ___ than half the mesiodistal diameter of the maxillary central incisor

more

3

the mandibular central incisor's labiolingual dimension is __mm less than the maxillary central

1mm

4

masticatory stress on the mandibular central incisor is in a ___ direction and aids in ___

  • labiolingual
  • reinforcement

5

the mandibular central incisor's root is narrow ___ and wide ___

  • mesiodistal
  • labiolingual

6

the mandibular central incisor's root length is as great, if not longer, than the ____

maxillary central incisor

7

the incisal ridge of the mandibular central incisor is ___, and at ___ angles to the long axis of the root

  • straight
  • right angles

8

the mesial and distal outlines of the mandibular central incisor drop straight down to ___, and taper evenly to ___

  • contact areas
  • cervix

9

the mesial and distal outlines of the mandibular central incisor root are fairly ___ to apical areas, with a slight curve to ___

  • straight
  • distal

10

the labial face of the mandibular central incisor is ___, with flattened surface at ___ third, and the ___ 3rd is convex

  • smooth
  • incisal
  • middle

11

the mandibular central incisor's face at the cervix is more ___ along with the root

convex

12

from the lingual aspect, the mandibular central incisor's ligual surface is ___, with a slight ___ at the incisal third

  • smooth
  • concavity

13

from the lingual aspect, the mandibular central incisor's marginal ridges are almost ___, but are sometimes prominent near ___

  • absent
  • incisal

14

from the lingual aspect, the mandibular central incisor's surface is flat, and progresses to ___ at the cervical third

convexity

15

from the lingual aspect, the mandibular central incisor shows ___ developmental grooves, along with the lateral

least

16

from the lingual aspect, the mandibular central incisor outlines are ___

symmetrical

17

from the mesial aspect, the mandibular central incisor's labial face is straight above the ___

cervical curvature

18

from the mesial aspect, the mandibular central incisor's lingual outline is ___ with labial inclination above the ___

  • straight
  • cingulum

19

from the mesial aspect, the mandibular central incisor is ___ at the middle third

concave

20

from the mesial aspect, the mandibular central incisor's incisal ridge is either ___ or ___, and is lingual to the center of the ___

  • round
  • worn flat
  • root

21

from the mesial aspect, the mandibular central incisor's curvature of the cervical line is towards the ___, almost ___ the length of the crown

  • incisal
  • 1/3

22

from the mesial aspect, the mandibular central incisor's root outline is ___ from cervix through middle third, then ___ rapidly

  • straight
  • tapers

23

from the mesial aspect, the mandibular central incisor's root apex may be ___ or ___

blunt or pointed

24

from the mesial aspect, the mandibular central incisor's mesial surface is ___, smooth at ___, tending to concavity at the ___

  • convex
  • incisal third
  • cervix

25

from the mesial aspect, the mandibular central incisor's mesial surface of the root is ___ below the cervical line

flat

26

from the mesial aspect, the mandibular central incisor will usually have a broad developmental depression along ___

most of the root

27

from the mesial aspect, the developmental depressions of mandibular central incisor roots are usually ___ at middle to apical thirds

deeper

28

from the distal aspect, the mandibular central incisor's curvature of the cervical line is about 1mm ___ than the mesial

less

29

from the distal aspect, the mandibular central incisor's distal surface of the crown and root are similar to ___

mesial

30

from the distal aspect, the mandibular central incisor's developmental depression on the distal may be more marked, with ___ at its center

developmental groove

31

from the incisal aspect, the mandibular central incisor shows bilateral ___

symmetry

32

from the incisal aspect, the mandibular central incisor's mesial half is almost ___ to distal half

identical

33

from the incisal aspect, the mandibular central incisor's incisal edge is almost at ___ with labiolingual bisecting line

right angles

this is an important ID separating central and lateral

34

from the incisal aspect, the mandibular central incisor's labiolingual dimension is always ___ than mesiodistal

greater

35

from the incisal aspect, the mandibular central incisor's crown tapers to the ___, and the mesiodistal measurement is greater at the ___

  • lingual
  • labial

36

the labiolingual section of the pulp chamber of the mandibular central incisor shows ___ pulp horns, with a ___ pulp chamber that tapers toward the ___

  • well developed
  • large
  • apex

37

the mesiodistal section of the pulp chamber of the mandibular central incisor shows a ___ cavity with ___ pulp horn (usually), and tapers to the ___

  • narrow
  • one
  • apex

38

in the mandibular central incisor, the root section of the pulp chamber is often ___-like, and sometimes ___ canals may be present

  • ribbon
  • two

39

the mandibular lateral incisor resembles the central incisor, except it is somewhat ___ than the central

larger

40

the mesial side of the mandibular lateral incisor crown is usually ___ than the distal

longer

41

the incisal ridge of the mandibular lateral incisor slopes downward in a ___ direction

distal

42

the distal contact area of the mandibular lateral incisor is more in a ___ direction

cervical

this allows the lateral to contact the canine

43

the mandibular lateral incisor may have a deeper ___ above the cervical line on the ___

  • concavity
  • distal

44

the root of the mandibular lateral incisor is usually considerably ___ than the cetral

longer

45

the mandibular lateral incisor will have developmental depressions ___ and ___

mesially and distally

46

from the incisal aspect, the mandibular lateral incisor ridge is not at right angles to ___, as is the central

bisecting line

47

from the incisal aspect, the mandibular lateral incisor ridge or edge is curved to follow ___, giving the appearance of the crown being ___ on the root

  • the curvature of the arch
  • twisted

48

form and function of the pulp chamber of the mandibular lateral incisor is similar to ___

mandibular central incisor