Incisors Flashcards Preview

Dental Development and Anatomy > Incisors > Flashcards

Flashcards in Incisors Deck (65)
Loading flashcards...
1

Maxillary Central Incisor
Eruption:
____

7-8 years

2

Maxillary Central Incisor Development
n There are ____ developmental lobes
n Three ____ developmental lobes.
n One ____developmental lobe.

four
facial (labial)
palatal (lingual)

3

Maxillary Central Incisor Development
n There are ____ facial (labial) developmental grooves.
u They are called ____.

two
labial lobe grooves

4

Maxillary Central Incisor Development
n ____ mamelons are visible on the ____ when the tooth first erupts
u These are the incisal borders of the ____
n ____ (through use) wears them away

three
incisal edge
developmental lobes
incisal contact

5

Maxillary Central Incisor Development
n The ____ forms the cingulum of the tooth.

palatal (lingual) developmental lobe

6

UNIQUE CHARACTERISTICS Maxillary Central Incisor – Facial View
n The maxillary central incisor is wider ____ than any other anterior tooth
n The crown has a greater ____ dimension than mesiodistal dimension.
n The incisocervical dimension of the crown is ____ the mesiodistal dimension

M-D
incisocervical
1.5 times

7

UNIQUE CHARACTERISTICS Maxillary Central Incisor – Facial View
n The ____ of the crown has been described as:
u an “____” with a ____ gingival side
u as a ____
u as a ____
u as a ____

outline form
imperfect square
rounded
trapezoid
square
rectangle

8

UNIQUE CHARACTERISTICS Maxillary Central Incisor – Facial View
n The incisal edge is almost ____mesiodistally
n ____ root
n The root is ____

straight
one
cone-shaped

9

UNIQUE CHARACTERISTICS Maxillary Central Incisor – Facial View
n The ____ angle is relatively sharp
n The ____ outline of the crown is almost straight

mesioincisal
mesial

10

UNIQUE CHARACTERISTICS Maxillary Central Incisor – Facial View
n The mesial contact is in the ____ of the crown - near the ____ angle
u Also called the ____

incisal 1/3
mesioincisal angle
mesial height of contour

11

UNIQUE CHARACTERISTICS Maxillary Central Incisor – Facial View
n The distal outline of the crown is more ____ than the mesial surface
n The distal contact is at the junction of the ____ and the ____
u Also called the ____

convex (curved)
incisal 1/3rd
middle 1/3rd
distal height of contour

12

UNIQUE CHARACTERISTICS Maxillary Central Incisor–Mesial View
n From the mesial, the crown has has a ____ or ____
n The facial height of contour is in the ____ of the crown
n The incisal aspect of the facial surface is somewhat ____

traingular
wedge-shape
cervical 1/3rd
flat

13

UNIQUE CHARACTERISTICS Maxillary Central Incisor–Mesial View
n The lingual height of contour is in the ____ of the crown
u It is actually the ____ of the tooth that creates this contour

cervical 1/3rd
cingulum

14

UNIQUE CHARACTERISTICS Maxillary Central Incisor–Mesial View
n There is a uniquely large incisal curvature of the ____ or ____.

cemento-enamel junction CEJ
cervical line

15

UNIQUE CHARACTERISTICS Maxillary Central Incisor–Mesial View
n The mesial contact is centered ____
n The concave portion of the lingual surface is called the ____

faciolingually
lingual fossa

16

UNIQUE CHARACTERISTICS Maxillary Central Incisor– LingualView
n The lingual fossa is a concavity bound by the ____, ____ and ____.

marginal rdiges
cingulum
incisal edge

17

UNIQUE CHARACTERISTICS Maxillary Central Incisor– LingualView
n The mesial marginal ridge is nearly ____
n The distal marginal ridge is ____

straight
curved

18

UNIQUE CHARACTERISTICS Maxillary Central Incisor–Distal View
n The distal contact is centered ____

faciolingually

19

UNIQUE CHARACTERISTICS Maxillary Central Incisor–Incisal View
n The crown is roughly ____ from an incisal view
n The incisal edge is slightly curved ____-almost straight
n The faciolingual thickness of the incisal edge is around ____
n the facial surface is only slightly ____, and can be flat on some teeth
n The crown tapers ____

triangular
mesiodistally
1.5 mm
convex
lingually

20

Maxillary Lateral Incisor

Eruption: ____

8-9 years

21

UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n Resembles the ____, but the crown is smaller, more slender, and rounder
n The root length is about the same as the the ____
n The incisocervical crown dimension is ____ than the mesiodistal dimension

central incisor
central incisor
greater

22

UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n The outline form of the crown has been described as generally ____
n There is a great morphologic variation in the ____ crown shape of the maxillary lateral incisor
-oval
-____

trapezoidal
facial
elliptical

23

UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n The crown exhibits the greatest incidence of variation in ____
n The lateral incisor may be even ____ from the mouth entirely

shape
missing

24

UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n ____ is a characteristic feature of the lateral incisor crown
n There is a curved ____

roundness
incisal edge

25

UNIQUE CHARACTERISTICS
Maxillary Lateral Incisor – Facial View
n The number and prominence of mamelons ____ – usually subtle
u most commonly there are ____ mamelons vs. central incisor (____).
n ____ wears them away

varies
two
three
incisal contact

26

UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n The ____ outline of the crown is convex
n The ____ corner is rounded

mesial
mesioincisal

27

UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n The mesial contact point on is located at the junction of the ____ and ____ thirds

incisal
middle

28

UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n The ____ outline of the crown is more rounded than the ____ outline
n The ____ corner is more rounded then the ____ angle

distal
mesial
distoincisal
mesioincisal

29

UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n The distal contact point is located near the ____.

middle 1/3rd

30

UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n ____ root
n The root is ____ in shape
u The root is commonly bent toward the ____ in the apical 1/3rd

one
conical
distal