In the Universal System, #9 refers to the permanent maxillary left central incisor. In the Universal System, #29 refers to the permanent mandibular first right molar.

Pulp canals

Teeth are comprised of the four tissue types listed below. While examining and treating teeth dental professionals must understand the composition and characteristics of each tissue type. Which description below best describes pulpal tissue?

The right quadrant refers to the patient’s right side.

In the Universal System the letter L represents the __.

A 30-year-old can have a retained deciduous premolar.

In the following illustration, structure “a” refers to a fossa, which is a convexity or bulge on a tooth. Structure “b” refers to a ridge, which is a concavity or depression within a tooth.

The part of the tooth that shows when someone opens their mouth is the anatomic crown.

All of the following formations are depressions EXCEPT one. Which one is the EXCEPTION?

The tooth surface facing the lip is called the mesial surface. The corresponding surface facing the cheek is called the distal surface.