Maxillary Lateral Incisors

Question 1

When do the mx lateral incisor….
calcify
erupt
root complete

Answer 1

calcify- begins around 1 year old
erupt- 8-9yrs old
root complete- 11yrs old

Question 2

Mx lateral incisors mesial contacts the ______, and distal contacts the ______

Answer 2

central; canine

Question 3

Compared to central incisors, mx lateral incisors are …..

Answer 3

smaller and more rounded

Question 4

The curvatures, convexities, and concavities on mx lateral incisors are more or less prominent than central incisors?

Answer 4

more prominent

Question 5

True or false: variations in mx lateral incisors are more frequent than any other permanent tooth except 3rd molars.

Answer 5

True: example include peg laterals and congenially missing laterals

Question 6

FACIAL VIEW: the crown outline is what shape?

Answer 6

trapezoidal

Question 7

FACIAL VIEW: where is the height of contour?

Answer 7

cervical 1/3rd

Question 8

FACIAL VIEW: which incisal angle is more rounded, mesial or distal?

Answer 8

distal
*both incisal angles more rounded than central

Question 9

FACIAL VIEW: where is the mesial contact area?

Answer 9

junction of incisal and middle 1/3rd

Question 10

FACIAL VIEW: where is the distal contact area?

Answer 10

middle 1/3rd

Question 11

LINGUAL VIEW: list the structures that are more prominent on mx lateral incisors than mx centrals

Answer 11

-MMR and DMR
-cingulum
-deeper lingual fossa

Question 12

LINGUAL VIEW: what is the linguogingival groove on mx lateral incisors

Answer 12

horizontal groove between the fossa and cingulum, more likely contains a lingual pit than centrals

Question 13

LINGUAL VIEW: what is the linguogingival fissure on mx lateral incisors?

Answer 13

fissure that runs gingivally from the groove slightly to the distal

Question 14

MESIAL/DISTAL VIEW: mx lateral incisors views are very similar to mx centrals, only _____.

Answer 14

smaller

Question 15

Describe the root of the mx lateral incisors

Answer 15

single, may have a distal curve

Question 16

Describe the crown-to-root ratio of the mx lateral incisors

Answer 16

root is 1.5 times the crown
root length usually equal to those of central incisors, but may be longer
larger ratio due to smaller crown

Question 17

How many root canals and pulp horns do mx lateral inciors have?

Answer 17

-1 root canal in the center
-3 pulp horns (mesial and distal more rounded, minimal central)

Question 18

ALL incisors develop from how many lobes?

Answer 18

4; 3 facial 1 lingual