Name different types of teeth and their number in an adult human.

In an adult human, there are four main types of teeth, each with a specific function in the process of mastication (chewing) and digestion. These types of teeth and their respective numbers in a typical adult human mouth are as follows:

1. Incisors: Incisors are the front teeth located in the center of the mouth. They have flat, chisel-shaped edges and are used for cutting and slicing food.

   • There are eight incisors in total, four in the upper jaw (maxillary incisors) and four in the lower jaw (mandibular incisors).

2. Canines (Cuspids): Canines are the pointed teeth located next to the incisors, one on each side of the incisor teeth. They have a single pointed cusp and are used for tearing and grasping food.

   • There are four canines in total, two in the upper jaw (maxillary canines) and two in the lower jaw (mandibular canines).

3. Premolars (Bicuspids): Premolars are located behind the canines and have two cusps on their biting surface. They are used for grinding and crushing food.

   • There are eight premolars in total, four in the upper jaw (maxillary premolars) and four in the lower jaw (mandibular premolars).

4. Molars: Molars are located at the back of the mouth and have multiple cusps on their biting surface. They are the largest and strongest teeth and are used for crushing and grinding food.

   • There are twelve molars in total, including six in the upper jaw (three on each side) and six in the lower jaw (three on each side).

In summary, a typical adult human mouth contains a total of 32 teeth, consisting of eight incisors, four canines, eight premolars, and twelve molars. However, variations in tooth number and morphology can occur due to factors such as dental anomalies, genetics, and dental treatments.