A tooth is made up of two parts:

       The crown is the part of the tooth that is visible in the mouth.

       The root extends into the bone of the jaw, anchoring the tooth in position.

These are composed of the following structures:

        Enamel is the hard outer coating of a tooth.

        Dentine is a softer material that supports the enamel and forms most of the tooth. 

         Cementum is a hard material that coats the root surface.

         Dental pulp is the soft tissue at the centre of the tooth.