Tooth Structure

Human beings develop 2 sets of teeth in their lifetime: the primary dentition (baby teeth or milk teeth) and the permanent dentition which replaces the primary set during childhood. There are 20 teeth in the primary set and 32 teeth in the permanent set in the adult, in each quadrant from the midline, there are 2 incisors, 1 canine, 1 premolar and 3 molars.

Each tooth is composed of a crown and one or more roots.The crown is the portion of the tooth which projects into the oral cavity. Its shape varies from tooth to tooth, depending on its function. The roots of the teeth are the portions which are contained within the bony socket. The roots are attacted to the bony socket by means of the periodontal fibres which hold the teeth firmly in place.

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