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DAOB Dental Anatomy > Maxillary Incisors > Flashcards

Maxillary Incisors Flashcards

1
Q
  1. When are the maxillary central incisors initially calcified?
  2. When is the enamel completed?
  3. When do they erupt?
  4. When is the root completed?
A
  1. 3-4 mo
  2. 4-5 yr
  3. 7-8 yr
  4. 10 yr
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2
Q
  1. Which has a longer overall length, central or lateral incisor?
  2. Which has a greater crown length?
  3. What about root length?
  4. Which has a wider mediodistal crown width
A
  1. Central
  2. Central
  3. Same
  4. Central
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3
Q

Identify the lines (parts of incisors)

A
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4
Q
  1. When the maxillary incisors first erupt, at the bottom of the teeth are incisal _______
  2. After wear, they become incisal ______, formed by the junction of the linguiincisal and labial surfaces
A
  1. Incisal ridges
  2. Incisal edges
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5
Q

What do the maxillary incisors provide/assist with?

A
  1. Functionally, they cut and shear
  2. Esthetics
  3. Phonetics
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6
Q

What is the outline form of the maxillary central incisors?

A

Rectangular

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7
Q

The incisal edges of maxillary central incisors are relatively straight with a slight rise to the MESIAL/DISTAL

A

Distal

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8
Q

This angle of maxillary central incisors is a rounded right angle

A

Mesioincisal angle

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9
Q

This angle of the maxillary central incisor is more rounded

A

Distoincisal Angle

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10
Q

The DISTAL/MESIAL surface presents a straight outline, while the DISTAL/MESIAL surface is more rounded.

A
  1. Mesial
  2. Distal
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11
Q
  1. How many mammelons are present when the maxillary central incisors erupt?
  2. Which is the smallest?
A
  1. Three Mammelons
  2. The middle mammelon is the smallest, the mesial and distal are approximately the same size
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12
Q

Do maxillary central incisors have facial development grooves?

A

They MAY be present.

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13
Q

What is the main difference between the mesial and distal contact point of the maxillary central incisors?

A

The contact of the mesial is located in the incisal third while the distal contact is located more cervically, and the junction of incisal and middle thirds

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14
Q
  1. Does the maxillary central incisor have a cingulum on the lingual aspect?
  2. What is also possibly next to it?
A
  1. Yes
  2. Accessory Lingual Ridges
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15
Q

On the lingual aspect of the maxillary central incisor, there is a distinctive depression under the cingulum called the…

A

Lingual Fossa

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16
Q

Which has a larger lingual radius of the CEJ, the labial or lingual CEJ?

A

Labial has a larger radius, lingual has a smaller radius

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17
Q

What is the shape of the crown outline of maxillary central incisors?

A

Wedge shaped/triangular

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18
Q
  1. Where is the facial height of contour on the maxillary central incisor?
  2. What about the lingual height of contour?
A
  1. Cervical third
  2. On the cingulum on the cervical third of the crown
19
Q

What is unique about the CEJ of maxillary central incisors from the proximal aspect?

A

Significant mesial and distal curvature

20
Q

Maxillary incisors that have a deep lingual fossa and prominent marginal ridges (common in Asians, Eskimos, North and South American Indians) are called…

A

Shovel Shaped Incisors

21
Q

Proximally, where are the ridge and root apex?

A

Along the bisecting line

22
Q

What is the crown outline form of the maxillary central incisors from the incisal aspect?

A

Triangular

23
Q

From the incisal aspect, the incisal edge is centered over the…

A

Root

24
Q
  1. On the maxillary central incisor, the radicular perspective of the root is shaped like a…
  2. The cross section of the root is a rounded ______
A
  1. Cone
  2. Triangle
25
Q

The root of maxillary central incisors is usually straight but may lean towards the MESIAL/DISTAL

A

Distal

26
Q

On the root of maxillary central incisors, a mesial and distal root _______ may exist

A

root depression

27
Q
  1. How many canals does the pulp cavity of the maxillary central incisor have?
  2. It narrows towards the _____
  3. The largest portion is located ______ly
  4. The pulp cavity tapers ______ly
A
  1. One
  2. Incisal
  3. Cervically
  4. Apically
28
Q

What are the most common morphological variations of the maxillary central incisors?

A
  1. Shovel Shaped incisors
  2. Short Root
  3. Very long root
  4. Deep lingual pit
29
Q

The maxillary lateral incisor is smaller in all dimensions than the maxillary central incisor except for…

A

Root length

30
Q

The mesial outline of the maxillary lateral incisors is STRAIGHT/ROUNDED

A

Straight, like the central incisors

31
Q
  1. This distal outline and disto-incisal angle of the maxillary lateral incisor is STRAIGHT/ROUNDED
  2. The disto-incisal angle resembles the angle of the adjacent…
A
  1. Rounded, particularly the diso-incisal angle
  2. Canine
32
Q
  1. Where is the mesial contact point of the maxillary lateral incisors?
  2. Where is the distal contact point?
A
  1. Junction of middle and incisal thirds
  2. Center of middle third
33
Q

Do the maxillary lateral incisors have a cingulum?

A

Yes

34
Q

On the lingual surface of the maxillary central incisors, the marginal ridges terminate into the…

A

Cingulum

35
Q

When looking at the maxillary lateral incisor from the lingual aspect, where is it located mesiodistally?

A

It is centered

36
Q

What is located where the marginal ridges converge gingivally on the maxillary lateral incisors?

A

A pit

37
Q

On the maxillary lateral incisor, what extends across the distal groove of the cingulum onto the root, continuing for part or all of its length?

A

A developmental groove

38
Q
  1. In the proximal view of the maxillary lateral incisor, it resembles the central incisor except for what feature?
  2. Is the ine through the long axis of the tooth through the incisal ridge and the middle of the crown?
A
  1. The root looks longer
  2. Yes
39
Q

From the incisal aspect, the maxillary lateral incisor resembles the central but it can also resemble the…

A

Canine

40
Q

The root of the maxillary lateral incisor resembles the central incisor. Curvature of the root is commonly to the ____ aspect

A

Distal

41
Q
  1. Maxillary lateral incisors vary in form more than any other tooth except the…
  2. What is an example of a morphologic variation?
A
  1. Third molar
  2. Peg Lateral
42
Q
  1. How many canals does the pulp cavity of the maxillary central incisor have?
  2. It narrows towards the _____
  3. The largest portion is located ______ly
  4. The pulp cavity tapers ______ly
A
  1. One
  2. Incisal
  3. Cervically
  4. Apically
43
Q

In addition to peg laterals, what are other common morphological variations of maxillary lateral incisors?

A
  1. Missing
  2. Large pointed tubercle on cingulum
  3. Deep palatoradicular groove extending down on the root
  4. Twisted root
  5. Distorted Crown

DAOB Dental Anatomy (6 decks)

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