tooth decay

What is dental plaque made up of?

• Calcium and fluoride

• Sugar and salt

• Proteins and vitamins

• Bacteria, food particles, and saliva

What is the initial sign of tooth decay?

• Black spot on the tooth

• Yellow spot on the tooth

• Brown spot on the tooth

• White spot on the tooth

What is the outer layer of the tooth called?

• Pulp

• Tartar

• Enamel

• Dentin

What happens when tooth decay reaches the dentin?

• The tooth becomes stronger

• The tooth decay stops

• The tooth becomes less sensitive

• The tooth decay proceeds faster

What is the tissue that lies under the enamel called?

• Dentin

• Pulp

• Tartar

• Enamel

What happens when damage to the pulp occurs?

• The tooth becomes stronger

• The tooth becomes whiter

• The pulp disappears

• The pulp becomes irritated and swollen

What is the innermost layer of the tooth called?

• Pulp

• Dentin

• Tartar

• Enamel

What can cause severe pain in the tooth?

• Cavities

• Abscess

• Plaque

• Tartar

What is formed at the bottom of the tooth when bacteria invade the pulp?

• Tartar

• Cavities

• Plaque

• Abscess

What is the color of a white spot on the tooth when it darkens?

• Yellowish

• Brownish

• Greenish

• Reddish