The teeth are the hardest and more resistant part in the body. They play a vital role in food digestion, helping to smash small pieces by biting and chewing.
In addition, it has an important role in articulation of words by controlling the flow of air through the oral cavity, therefore, the teeth provide structural support to facial muscles and also help in smilling.
The tooth is made up of:
- Crown - the upper part of the tooth. The shape of the ring determines the function of the tooth. For example, the front teeth have the role to cut, while the molars are used in chewing due to their flat surface.
- Mucogingival junction - the dividing line between the tooth and gum. In the absence of proper brushing and use of dental floss, dental plaque and tartar can form and then create gingivitis and other gum disease.
- Root - the part of the tooth situated inside the jawbone. It is about two thirds of the tooth and has the role to fix the tooth to the bone.
- Enamel- The layer on the tooth surface. This is the hardest and the most mineralized tissue in the body - however, it can be damaged by decay, lack of proper oral hygiene.
- Dentine - the layer below the tooth enamel. When caries destroys enamel, they attack the dentine - here, millions of small vessels connect to the dental pulp.
- Pulp - the soft tissue in the center of all types of teeth, containing nerve endings and blood vessels. The dental pulp shares the sensation of pain when the caries get there.