Tooth Structure

What is the outer layer of the crown called?

• Dentin

• Enamel

• Gingiva

• Pulp

Which part of the tooth is the hardest?

• Dentin

• Pulp

• Enamel

• Cementum

What kind of protection does the periodontal ligament provide?

• Protection from heavy forces

• Protection from tooth decay

• Protection from gingivitis

• Protection from osteoporosis

Which part of the tooth provides anchorage into the jaw bone?

• Enamel

• Root

• Crown

• Pulp

What structure forms the bulk of the tooth structure?

• Periodontal ligament

• Enamel

• Cementum

• Dentin

A nerve and blood vessel enters the tooth through what structure?

• Crown

• Root

• Pulp

• Enamel

What is the function of a molar?

• Cut and shear

• Grip and tear

• Tear and crush

• Chew, crush, and grind

How many permanent teeth are there including wisdom teeth?

• 20

• 32

• 16

• 28

How many primary teeth are normally formed?

• 20

• 32

• 18

• 4

Which type of tooth is not present in primary teeth?

• Incisor

• Canine

• Premolar (bicuspid)

• Molar