Incisors Flashcards
Maxillary Central Incisor
Eruption:
____
7-8 years
Maxillary Central Incisor Development
n There are ____ developmental lobes
n Three ____ developmental lobes.
n One ____developmental lobe.
four
facial (labial)
palatal (lingual)
Maxillary Central Incisor Development
n There are ____ facial (labial) developmental grooves.
u They are called ____.
two
labial lobe grooves
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
Maxillary Central Incisor Development
n The ____ forms the cingulum of the tooth.
palatal (lingual) developmental lobe
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
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
UNIQUE CHARACTERISTICS Maxillary Central Incisor – Facial View
n The incisal edge is almost ____mesiodistally
n ____ root
n The root is ____
straight
one
cone-shaped
UNIQUE CHARACTERISTICS Maxillary Central Incisor – Facial View
n The ____ angle is relatively sharp
n The ____ outline of the crown is almost straight
mesioincisal
mesial
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
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
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
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
UNIQUE CHARACTERISTICS Maxillary Central Incisor–Mesial View
n There is a uniquely large incisal curvature of the ____ or ____.
cemento-enamel junction CEJ
cervical line
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
UNIQUE CHARACTERISTICS Maxillary Central Incisor– LingualView
n The lingual fossa is a concavity bound by the ____, ____ and ____.
marginal rdiges
cingulum
incisal edge
UNIQUE CHARACTERISTICS Maxillary Central Incisor– LingualView
n The mesial marginal ridge is nearly ____
n The distal marginal ridge is ____
straight
curved
UNIQUE CHARACTERISTICS Maxillary Central Incisor–Distal View
n The distal contact is centered ____
faciolingually
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
Maxillary Lateral Incisor
Eruption: ____
8-9 years
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
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
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
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
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
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n The ____ outline of the crown is convex
n The ____ corner is rounded
mesial
mesioincisal
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n The mesial contact point on is located at the junction of the ____ and ____ thirds
incisal
middle
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
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor – Facial View
n The distal contact point is located near the ____.
middle 1/3rd
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
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor –Mesial View
n The crown has been described as ____ or ____
n The facial height of contour is in the ____ 1/3rd of the crown
n The lingual height of contour is in the ____ 1/3rd – (____)
n The facial (labial) surface is moderately convex
triangular wedge-shaped cervical cervical cingulum
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor –Mesial View
n The cervical line curves ____ but less than the central incisor
n The mesial proximal contact is centered ____
incisally
faciolingually
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor– Lingual View
n The ____ marginal ridge is longer and straighter than the ____ marginal ridge
n The distal marginal ridge is more curved ____ and is ____ incisocervically than the mesial marginal ridge
n The ____ is well developed
mesial distal incisocervically shorter lingual fossa
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor– Lingual View
n The cingulum is narrow ____
n A lingual pit is frequently detectable at the ____ of the cingulum
n Some teeth have a ____
mesiodistally
incisal border
linguogingival fissure (groove)
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor– Lingual View
n The ____ may be shallow or deep (deeper than the central incisor)
n The marginal ridges and cingulum form the characteristic letter ____
lingual fossa
“U”
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor –Distal View
n The distal marginal ridge is not as ____ as the mesial marginal ridge.
n There is less____ of the CEJ
n The distal contact is centered____

concave
incisal curvature
faciolingually
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor –Incisal View
§ The crown is ____ from an incisal view
n The facial surface is distinctly ____
n The lingual surface has a distinctly round ____

triangular
rounded
cingulum
UNIQUE CHARACTERISTICS Maxillary Lateral Incisor –Incisal View
n The cingulum is nearly ____
n A linguogingival fissure (groove), when present,
u originates from the ____ and extends onto the ____ slightly to the ____
mesiodistally
lingual pit
cingulum
distal
Mandibular Central Incisor
Eruption: ____
4-6 years
UNIQUE CHARACTERISTICS Mandibular Central Incisor – Facial View
n The mandibular central incisor has a uniquely small ____ crown dimension
n Are the ____ in the mouth
n The mesial and distal halves of the crown are ____
mesiodistal
smallest teeth
bilaterally symmetrical
UNIQUE CHARACTERISTICS Mandibular Central Incisor – Facial View
n The incisal edge is almost flat and positioned perpendicular to the ____
n The outline form of the crown has been described as ____
long axis bisector
trapezoidal
UNIQUE CHARACTERISTICS Mandibular Central Incisor – Facial View
n The mesial and incisal surfaces form an angle (mesio incisal angle) that is nearly a ____
n The disto incisal angle is ____ to the mesio incisal angle
90degree angle
very similar
UNIQUE CHARACTERISTICS Mandibular Central Incisor –
Facial View
n The mesial and distal crown surfaces are ____ and taper evenly
n The mesial contact is located in the ____l one-third
n The distal contact is located in the ____ one-third at the same position as the ____ proximal contact*
straight
incisal
incisal
mesial
UNIQUE CHARACTERISTICS Mandibular Central Incisor –
Facial View
n ____, short root
n The root tapers ____ on both
sides and is narrow
n The root is ____
n There may be a slight ____ curvature to the root apex
n The root terminates in a small pointed taper
one
evenly
conical
distal
UNIQUE CHARACTERISTICS Mandibular Central Incisor – Mesial View
n The outline form of the crown is ____ or ____
n The facial height of contour is in the ____l one-third of the crown
n The facial surface is ____ incisal to (above) the height of contour
triangular
wedge-shaped
cervical
flat
UNIQUE CHARACTERISTICS Mandibular Central Incisor – Mesial View
n The lingual height of contour is in the ____ one-third of the crown at the cingulum
n The mesial contact is centered ____
cervical
faciolingually
UNIQUE CHARACTERISTICS Mandibular Central Incisor – LingualView
n The lingual surface is very smooth and does not have ____
n There is a shallow ____ located in the middle of the lingual surface
grooves, ridges, pits
lingual fossa
UNIQUE CHARACTERISTICS Mandibular Central Incisor – LingualView
n The cingulum is ____ on the crown and ____ than the maxillary incisors
centerd
less developed
UNIQUE CHARACTERISTICS Mandibular Central Incisor – Distal View
n The CEJ curves incisally less on the ____ surface than the ____ surface
n The distal contact location is centered ____
distal
mesial
faciolingually
UNIQUE CHARACTERISTICS Mandibular Central Incisor – Incisal View
n The crown had been described as:
u ____
u ____
n The incisal edge is straight
____.
n The incisal edge is perpendicular to the ____
triangular
diamond-shaped
mesiodistally
faciolingual bisector line
Mandibular Lateral Incisor
Eruption: ____
7-8 years
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Facial View
n The outline form of the crown is ____
n The incisocervical crown dimension is ____ than the mesiodistal crown dimension
n ____ than the mandibular central incisor
trapezoidal
greater
larger
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Facial View
n The mesial half of the crown is ____ as the distal half
n The mesioincisal angle is ____
n The distoincisal angle is more ____
n The incisal edge may slope cervically toward the ____
not the same
sharp
rounded
distal
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Facial View
n The ____ outline is straighter than the ____ outline
n The mesial contact point is in the ____ 1/3rd, close to the incisal edge
n The distal contact point is in the ____ 1/3rd, but located more ____ than the mesial contact
mesial distal incisal incisal cervical
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Facial View
n The root is ____ than the central incisor
n The root tapers on ____ and is also very narrow
longer
both sides
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Mesial View
n The outline form of the crown is ____ or ____
n The facial height of contour is in the ____ one-third of the crown
n The facial surface is also ____ incisal to the height of contour
triangular
wedge-shaped
cervical
flat
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Mesial View
n The lingual height of contour is just ____ to the CEJ (cervical line) in the ____ 1/3rd
n The mesial contact is centered ____
incisal
cervical
faciolingually
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Lingual View
n The lingual surface is very smooth without ____
n The lingual fossa is smooth and ____
n The cingulum is offset to the ____ and ____
grooves, ridges, or pits
barely visible
distal
less developed
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Distal View
n The cervical line curves less than the ____ surface
n The distal contact is centered ____ and more ____ than the mesial surface
mesial
faciolingually
gingival
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Incisal View
n The crown had been described as
u ____
u ____
n The crown appears “twisted” on the ____
u the distal portion of the incisal edge is located
____ to the mesial aspect of the incisal edge
triangular
diamond-shaped
root
lingual
UNIQUE CHARACTERISTICS Mandibular Lateral Incisor – Incisal View
n The crown is not ____. The incisal edge does not form a right angle with the faciolingual crown bisecting line
n The distoincisal corner may be located more ____ than the mesioincisal corner
bilaterally symmetrical
lingually
I-G Contact Position: Max CI: ____
Max LI : ____
Man CI: ____
Man LI: ____
IJ
JM
II
II
B-L Contact Position:
All contact points are ____ on all the anterior teeth
Buccal Height of Contour Position:
All buccal heights of contour are in the ____ 1/3rd for all the anterior teeth
centered
cervical
Lingual Height of Contour Position:
All lingual heights of contour are in the ____ 1/3rd for all the anterior teeth
cervical
Proximal (Mesial/Distal): ____ or ____
Facial/Lingual:
All incisors are described to be shaped like a ____.
The maxillary lateral may be different sometimes and can also be described as ____ or ____. (However, if asked what is most common, the correct answer would be trapezoial….)
triangle wedge shaped trapezoid elliptical oval
