Mandibular Incisors

Question 1

where are the proximal contact areas on mandibular incisors?

Answer 1

incisal 1/3 both mesial and distal

Question 2

mandibular incisal ridges are more _____ in proximal view

Answer 2

labial

Question 3

incisal edges wear _____ on mandibular incisors

Answer 3

labially

Question 4

mandibular incisors are generally anterior/posterior to maxillary incisors

Answer 4

posterior

Question 5

in mandibular incisors, roots are shorter/longer than crowns

Answer 5

longer

Question 6

roots in mandibular incisors bend towards the ____ in apical direction

Answer 6

distal

Question 7

mandibular incisors: roots are wider ____ than ___

Answer 7

FL

MD

Question 8

mandibular incisors: are there mesial and distal root depressions?

Answer 8

yes, bigger depression on distal

Question 9

incisal angles on mandibular central incisors

Answer 9

sharp, distal is slightly less

Question 10

marginal ridges on man central incisor

Answer 10

slightly conspicuous towards the incisal

Question 11

in man central incisor, crown is more_____ FL as you progress to the gingival

Answer 11

convex

Question 12

in mand central incisor, cingulum is less/more developed

Answer 12

less

Question 13

mand central incisor: few/many developmental lines and grooves

Answer 13

few

Question 14

incisal view of mand central incisor:

symmetry:
incisal edge:
FL vs MD dimension

Incisal third convex/concave on F and convex/concave on L

Answer 14

bilateral even symmetry, not twisted

incisal edge is straight with slight curve

FL greater than MD

convex, concave

Question 15

Mandibular Central Incisor Mesial View:

Incisal ridge is ____ to the center of the tooth

_____ is flat from cervical height of contour to incisal ridge

F and Li Height of Contour is in _____ 1/3. Facial/Lingual slightly higher

CEJ is more curved on Mesial/Distal than on the Mesial/Distal

_____ grooves usually present and deeper than mesial/distal

Answer 15

Lingual

Facial

Cervical, Lingual

Mesial, distal

root, mesial (depper on distal)

Question 16

Pulpal Anatomy of a Mandibular Central Incisor

Much greater ____ dimensions

Answer 16

facial/lingual

Question 17

Mandibular Lateral Incisor Facial View:

Narrower/Wider than central and not as symmetrical

Crown tilts slightly _____ on the root

Slight ____ tilt of incisal edge

Curved M/D outline that appears shorter than the straighter M/D outline

Mesial and Distal contacts are at the same/not the same level

Answer 17

Wider

distal

distal

distal, mesial

not at the same

Question 18

Mandibular Lateral Incisor Labial View:

Slightly _____ cant to lingual cingulum

Smooth, barely discernible ____ _____ and ______ _____. Similar to central

Roots are convex/concave and slightly larger/narrower than on the facial side. Similar to central

Answer 18

distal

marginal ridges, lingual fossa

convex, narrower

Question 19

Mandibular Lateral Incisor Incisal View:

Lateral incisor incisal edge is ______

Cingulum is located towards the _____

Incisal ridge is located on the perpendicular line or slightly ______

Answer 19

twisted

distal

lingual

Question 20

Mandibular Lateral Incisor Mesial View:

Mesial/Distal portion of marginal ridge more lingual than the mesial/distal. ____ twist

Height of contour in the _____ 1/3
similar to central incisors

CEJ curves more on the mesial/distal than on the mesial/distal

Answer 20

distal, mesial, distal

cervical

mesial, distal

Question 21

Mandibular Lateral Incisor Distal View:

None of the ______ surface is visible

More distinct root depression than on the mesial root

______ root groove is almost always present

Answer 21

lingual

distal

Question 22

central/lateral is more symmetrical

Answer 22

central

Question 23

crown outline is more convex on the distal of the central/lateral

Answer 23

lateral

Question 24

For centrals/laterals the mesial incisal line angle is similar or slightly sharper than the distal incisal line angle. For centrals/laterals
the mesial incisal line angle is sharper than the distal incisal line angle

Answer 24

centrals

laterals

Question 25

The contacts are at the same height on the mesial and the distal of the central/lateral

Answer 25

central

Question 26

Proximal contacts are at different heights on the central/lateral

Answer 26

lateral

Question 27

fusion

Answer 27

union of two adjacent teeth

Question 28

In ____, crown has doubled in width but there are separate root canals and pulp chambers

Answer 28

fusion

Question 29

_____ results in a reduced number of teeth

Answer 29

fusion

Question 30

gemination

Answer 30

same number of teeth 1 pulp canal and 2 pulp chambers

Question 31

initial calcification of Maxillary permanent central incisors occurs ____ -____ months

Answer 31

3-4

Question 32

initial calcification of Mandibular permanent | incisors occurs __-__ months

Answer 32

3-4

Question 33

initial calcification of Maxillary permanent lateral incisors occurs __-___ months

Answer 33

10-12

Question 34

eruption mandibular first molar

Answer 34

6-7 years

Question 35

eruption mandibular central incisor

Answer 35

6-7 years

Question 36

eruption mandibular lateral incisor

Answer 36

7-8 years

Question 37

eruption maxillary central incisor

Answer 37

7-8 years

Question 38

eruption maxillary lateral incisor

Answer 38

8-9 years

Question 39

eruption mandibular canine

Answer 39

9-10

Question 40

permanent eruption sequence

Answer 40

mandibular first molar mandibular central incisor mandibular lateral incisor maxillary central incisor maxillary lateral incisor mandibular canine

Question 41

mand central vs lateral crown length

Answer 41

8. 8 | 9. 4

Question 42

mand central vs lateral root length

Answer 42

12. 6 | 13. 5

Question 43

mand central vs lateral root/crown ratio

Answer 43

1. 43 | 1. 43

Question 44

mand central vs lateral overall length

Answer 44

20. 8 | 22. 1

Question 45

mand central vs lateral crown width MD

Answer 45

5. 3 | 5. 7

Question 46

mand central vs lateral cervix width MD

Answer 46

3. 5 | 3. 8

Question 47

mand central vs lateral crown width FL

Answer 47

5. 7 | 6. 1

Question 48

mand central vs lateral cervix width FL

Answer 48

5. 4 | 5. 8

Question 49

mand central vs lateral mesial cervical curve

Answer 49

2 2.1

Question 50

mand central vs lateral distal cervical curve

Answer 50

1. 6 | 1. 5