Mandibular Central Incisors Flashcards
When do the mandibular central incisors…
calcify
erupt
root complete
calcify- begins around 3 months
erupt- 6-7yrs old
root completion- 9 yrs old
Which tooth has the smallest crown of all permanent teeth?
mandibular central incisors
Which tooth has the most symmetrical crown of all the permanent teeth?
mandibular central incisors
FACIAL VIEW: what shape is the outline of mn central incisors
trapezoidal
*not as drastic as other incisors
FACIAL VIEW: where is the height of contour?
cervical 1/3rd
FACIAL VIEW: both the mesial and distal incisal angles are straight or curved?
straight
FACIAL VIEW: the mesial angle of mn central incisors is ______ compared to mx central incisors
sharper
FACIAL VIEW: both the mesial and distal incisal angles are what type of angles? *acute, obtuse, what degree?
acute 90 degree angles
FACIAL VIEW: the cervical line on mn central incisors has a _______ tendency.
distal
FACIAL VIEW: are imbrication lines usually present on mn central incisors or mx central incisors?
more usually present on mx central incisors
FACIAL VIEW: where is the mesial contact?
incisal 1/3rd
FACIAL VIEW: where is the distal contact?
incisal 1/3rd
LINGUAL VIEW: mn central incisors have ______ detail compared to mx central incisors
less
LINGUAL VIEW: how would you describe the cingulum of mn central incisors?
-not as prominent compared to mx central incisors
-slightly offset to the distal
LINGUAL VIEW: where is the height of contour?
cervical 1/3rd
Incisal wear occurs toward which surface of mn central incisors?
facial/labial surface
What type of root do mn central incisors have
single straight
*can have proximal fluting
The root of mn central incisors curves slightly _______.
distally
How many root canals and pulp horns do mn central incisors have?
-1 root canal
-3 pulp horns
The root of mn central incisors are wider_______ than ________.
faciolingually; mesiodistally
