Tooth Morph - Upper or Lower tooth

Question 1

How to tell upper or lower incisors?

Answer 1

Upper incisors are larger.
Crowns are more square shaped and have more rounded angles.
Roots are also more conical shaped.

Lower incisors are smaller/narrower.
Have sharp/straight lines to the crowns.
Roots are very narrow mesial-distally compared to facial/lingually.

Question 2

How to tell if upper or lower canine?

Answer 2

Upper canine has more prominent cingulum, lingual fossae, distal bulge, and ridges.

Lower canine has less prominent cingulum, lingual fossae, distal bulge, and ridges.

Question 3

How to tell upper or lower premolars?

Answer 3

Cusps of upper premolars are centred over the root.

Cusps of lower premolars are tilted lingually.

Question 4

How to tell if upper or lower molars?

Answer 4

Upper molars have three roots.

Lower molars have two roots.