Incisors Flashcards by J L

Maxillary Central Incisor
Eruption:
____

7-8 years

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

four
facial (labial)
palatal (lingual)

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

two

labial lobe grooves

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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

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Maxillary Central Incisor Development

n The ____ forms the cingulum of the tooth.

palatal (lingual) developmental lobe

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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

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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

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

straight
one
cone-shaped

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

mesioincisal

mesial

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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

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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

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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

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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

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UNIQUE CHARACTERISTICS Maxillary Central Incisor–Mesial View

n There is a uniquely large incisal curvature of the ____ or ____.

cemento-enamel junction CEJ

cervical line

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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

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

marginal rdiges
cingulum
incisal edge

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

straight

curved

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UNIQUE CHARACTERISTICS Maxillary Central Incisor–Distal View

n The distal contact is centered ____

faciolingually

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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

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Maxillary Lateral Incisor

Eruption: ____

8-9 years

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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

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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

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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

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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

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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 ```