Maxillary Lateral Incisors

Question 1

Statistics

Answer 1

Quick- recall the stats about the Maxillary Central Incisor before moving on!

But just like on the Maxillary Central Incisor, the Mesial Distal Width is greater than the Facial Lingual Width

And that the crown is shorter than the root– in this case not Wayne Gretzky’s rule, but 99% times you’ll have one canal and 1 foramen

Question 2

First Calcification

Answer 2

10-12 months

Question 3

enamel completion

Answer 3

4-5 years

Question 4

eruption

Answer 4

8-9 years

Question 5

root complete

Answer 5

11

Question 6

Anomalies

Answer 6

1) Peg Laterals
2) Congenitally missing laterals- third molars also fall in this category
3) Dens in Dente (tooth within a tooth)

Question 7

Mesial:

Answer 7

I 1/3

Question 8

Distal

Answer 8

At the junction of the incisal and middle third- sometimes just the middle third

Question 9

Facial/Labial

Answer 9

Cervical 3rd

Question 10

Lingual

Answer 10

Cervical 3rd

Question 11

Facial Aspect

Answer 11

Proximal-Incisal Angles are more rounded!- note on the maxillary central the mesial incisal angle was not very round.

Depressions and Mamelons are not that pronounced

Crown slender and root is longer and skinnier than central. Note: Root isn’t technically longer than the central, that is just in comparison to how it relates to the crown!v

Peg laterals you are wider at cervical and taper towards incisal

Question 12

Lingual Aspect

Answer 12

Lingual Fossa is smaller, but more pronounced

Often Pitted- may have a distal developmental groove on the lingual side that approaches the fossa and forms a pit

Cingulum is centered

Surface root depression on the mesial side- thus making the distal more convex!

Question 13

Mesial and Distal

Answer 13

Very similar to those of the central, but the crown is shorter and the root is longer- sort of what was mentioned earlier

The labiolongual measurement is less than that of the central (mesiodistal width is still larger)

Curvature of CEJ is still greater- constant with norm.

Question 14

Mesial and Distal Root Info

Answer 14

Tapered cone with a blunt rounded apex.

Labial outline of the root is straight and the incisal edge is CENTERED on the tooth

Also, there is a developmental depression the mesial side of the root!

Question 15

Incisal Aspect

Answer 15

Mix of the Central and Canine

M-D is still larger than the F-L, outline is more round than central– recall what shape was the incisal aspect of the central incisor?, also the facial is more convex than central.

Cingulum is centered.