Solution:

The buccal cavity is responsible for two purposes. The first is mastication, or chewing, and the second is swallowing. The food we eat is lubricated by saliva, and the cheering process splits the food into smaller bits. Carbohydrate digestion begins in the buccal cavity. Saliva contains salivary amylase, which is combined with the meal. Starch is broken down into maltose, isomaltose, and -dextrins by this enzyme. In the buccal cavity, 30% of the starch in diet is hydrolyzed.

There are four types of teeth in human beings – incisors, canines, premolars and molars, denoted as I, C, PM and M respectively.

Arrangement of teeth in each half of the upper and lower jaw in the order I, C, PM, M is represented by a dental formula which in human is 2123/2123, two incisors, one canine, two premolars and three molars on each side of jaws. Thus there are 32 teeth in an adult human.