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Dental Hygiene: Anatomy > Mandibular Central Incisors > Flashcards

Mandibular Central Incisors Flashcards

1
Q

When do the mandibular central incisors…
calcify
erupt
root complete

A

calcify- begins around 3 months
erupt- 6-7yrs old
root completion- 9 yrs old

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2
Q

Which tooth has the smallest crown of all permanent teeth?

A

mandibular central incisors

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3
Q

Which tooth has the most symmetrical crown of all the permanent teeth?

A

mandibular central incisors

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4
Q

FACIAL VIEW: what shape is the outline of mn central incisors

A

trapezoidal
*not as drastic as other incisors

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5
Q

FACIAL VIEW: where is the height of contour?

A

cervical 1/3rd

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6
Q

FACIAL VIEW: both the mesial and distal incisal angles are straight or curved?

A

straight

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7
Q

FACIAL VIEW: the mesial angle of mn central incisors is ______ compared to mx central incisors

A

sharper

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8
Q

FACIAL VIEW: both the mesial and distal incisal angles are what type of angles? *acute, obtuse, what degree?

A

acute 90 degree angles

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9
Q

FACIAL VIEW: the cervical line on mn central incisors has a _______ tendency.

A

distal

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10
Q

FACIAL VIEW: are imbrication lines usually present on mn central incisors or mx central incisors?

A

more usually present on mx central incisors

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11
Q

FACIAL VIEW: where is the mesial contact?

A

incisal 1/3rd

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12
Q

FACIAL VIEW: where is the distal contact?

A

incisal 1/3rd

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13
Q

LINGUAL VIEW: mn central incisors have ______ detail compared to mx central incisors

A

less

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14
Q

LINGUAL VIEW: how would you describe the cingulum of mn central incisors?

A

-not as prominent compared to mx central incisors
-slightly offset to the distal

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15
Q

LINGUAL VIEW: where is the height of contour?

A

cervical 1/3rd

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16
Q

Incisal wear occurs toward which surface of mn central incisors?

A

facial/labial surface

17
Q

What type of root do mn central incisors have

A

single straight
*can have proximal fluting

18
Q

The root of mn central incisors curves slightly _______.

A

distally

19
Q

How many root canals and pulp horns do mn central incisors have?

A

-1 root canal
-3 pulp horns

20
Q

The root of mn central incisors are wider_______ than ________.

A

faciolingually; mesiodistally

Dental Hygiene: Anatomy (28 decks)

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