Chapter 1: Dental Anatomy Overview

Question 1

What teeth are missing in the primary dentition?

Answer 1

Premolars

Question 2

What would the right mandibular first premolar be numbered in the universal numbering system? palmer system? FDI system?

Answer 2

28, 4 (with bracket enclosing lower right), 44

Question 3

What are the four tissues of a tooth?

Answer 3

1. Enamel
2. Dentin
3. Cementum
4. Pulp

Question 4

Does the clinical crown always refer to only the enamel covered tooth?

Answer 4

No. The anatomical crown does, however the clinical crown refers to the erupted portion of the tooth.

Question 5

T/F: Larger root/crown ratio equals a relatively longer root?

Answer 5

True

Question 6

What tooth has the longest crown in the mouth?

Answer 6

Maxillary central incisor

Question 7

What is the longest tooth in the mouth?

Answer 7

Maxillary canine

Question 8

Which tooth has the widest crown?

Answer 8

Mandibular first molar

Question 9

Which tooth has the narrowest crown?

Answer 9

Mandibular central incisor

Question 10

What is the relationship between cusps and ridges?

Answer 10

Cusps are made of a cusp tip surrounded by ridges.

Question 11

T/F: The occlusal table is often larger than the outline of the tooth.

Answer 11

False

Question 12

What are the bumps that form from the three lobes on adult incisors?

Answer 12

Mamelons

Question 13

What are the very small ripples of enamel seen on newly erupted adult teeth?

Answer 13

Perikymata

Question 14

Major grooves are considered ______ and include central and fossa grooves. Minor grooves are considered ______ and include marginal ridge grooves and extra grooves.

Answer 14

Developmental; supplemental