Anatomy

Enamel

• The 1st and outer most layer of the tooth.
• Very Hard.
• Very Strong.
• Acts as a Barrier.

Dentin

• The 2nd Layer of the tooth.
• Also very strong and hard (Not as hard as the Enamel).

Pulp

Contains all Nerves and Blood Vessels.

Blood Vessels

Supplies tooth with nutrients.

Types of Teeth

Incisors

They are sharp and chisel like, are used for cutting. There are 4 incisors on top and 4 on the bottom.

Canines

They are pointy and sharp, and are used for ripping and tearing meat. There are 2 on the top and 2 on the bottom.

Pre-Molars

These are broad and flat, are designed for crushing and grinding.

Molars

These are also broad and flat, are designed for crushing and grinding.

The Dental Formula

$I = \cfrac{2}{2}$

$C = \cfrac{1}{1}$

$PM = \cfrac{2}{2}$

$M = \cfrac{3}{3}$

Caring for the Teeth

• Brush Teeth - Removes particles that is stuck on the surface on the teeth.
• Flossing - Removes particles that the toothbrush is unable to access.
• Mouthwash - Kills bacteria, prevents tooth decay and fixes bad breath.

Cavity

Left over sugar from food is consumed by bacteria who produce acid as a waste product. These acids, over time breakdown and chip away the teeth, from the enamel to the dentine then to the pulp, forming a cavity, where you will feel pain (a tooth ache).