Maxillary Lateral Incisors

Question 1

how does the lateral incisor compare to the central incisor with respect to the mesio-distal/inciso-cervical lengths?

Answer 1

lateral incisor is longer inciso-cervically whereas the central incisor is about the same in both directions

Question 2

Which tooth has a longer root (proportionally), the central or lateral incisor?

Answer 2

lateral incisor

Question 3

how are the incisal angles in comparison to the central incisor?

Answer 3

both incisal angles are more rounded, with the distal still being the more rounded of the two

Question 4

What are the mesial and distal HOCs of the maxillary lateral incisors?

Answer 4

Mesial: between the incisal and middle third - Distal: middle third

Question 5

What are the facial and lingual HOCs of the maxillary lateral incisors?

Answer 5

Facial: cervical third - Lingual: closer to cervical line

Question 6

Describe the mesial outline in comparison to the distal outline.

Answer 6

The mesial outline is flatter than the distal (distal is more rounded).

Question 7

The central incisor has a lingual fossa, what is the lateral incisor’s lingual fossa ofter referred to as? Why?

Answer 7

a lingual pit ; it has proportionally larger marginal ridges and cingulum, resulting in a deeper lingual fossa.

Question 8

Describe the distal cervical line in comparison to the mesial cervical line on the max. lateral incisors.

Answer 8

Distal cervical line is less curved toward the incisal than that of the mesial. (same as central incisor)

Question 9

How does the root of the max. lateral incisors’ compare to that of the central’s?

Answer 9

lateral incisors have a more oval root (not triangular), and can have a visible distal curvature.

Question 10

What is a peg lateral?

Answer 10

a maxillary lateral incisor that has a very conical shape.