Your mouth and teeth are a large part of
Functions of Teeth
-allow you to speak-make certain sounds
-allow us to chew our food
-give our mouth structure
Parts of a Tooth
A. Crown – the top of a tooth. The chewing
B. Neck – between the crown and the root
C. Root – under the gum line. Holds the
tooth in place.
Four types of tissue of a tooth
1. Enamel- the hard outer layer. Covers
2. Dentin- bonelike material under the
enamel. Covers and protects the pulp.
3. Pulp- soft sensitive inner part of tooth.
Contains nerves and blood vessels.
4. Cementum- thin bone like material
between root and jaw bone. Holds the
tooth in place.
Types of Teeth (32 total)
1. Incisors-(8) the eight center teeth (4 top/
4 bottom) they cut and tear our food.
2. Canines-(4) The pointed teeth beside
the incisors. They grip and tear our food.
3. Premolars-(8) the smaller teeth between
canines and molars.
4. Molars-(12) The largest teeth in back
for grinding our food. (mastication)
Types of Teeth
Tooth Decay-how does a tooth
1. Plaque-a sticky film of food and bacteria
forms on teeth from the food we eat. If not
removed it turns into tarter.
2. Tartar and Sugar we eat creates acid
that eats away at the enamel of a tooth and
creates a cavity.
3. Untreated the decay continues into the
pulp of the tooth and can cause a
4 A toothache- occurs when the pulp or
nerve is exposed to the air.
5. Tooth loss-can occur if the cavity is not
Prevention of dental cares (cavities)
A. Brushing your teeth- removes plaque
– Brush after each meal and before bedtime
B. Floss your teeth daily- it gets where a
toothbrush can’t reach
C. Cut down on sweets or brush after eating
D. See your dentist every 6 months
Problems of the teeth and mouth
-Gingivitis- an infection of the gum
-gums are red and swollen, bleed when
- Malocclusion- teeth are out of alignment,
may require a specialist (Orthodontist)
-Halitosis- bad breath. Caused by poor
oral hygiene, gingivitis or tooth decay