The process of chewing the food and conversion of the food to bolus is known as mastication. The process takes place in the mouth. The teeth are mainly responsible for the process of mastication. The teeth are involved in the chewing, crushing and conversion of the particles of the food. The food is grounded by the teeth by arranging the food with the cheek and the tongue. The food is mixed with saliva and then the bolus is formed. This is an important process in the digestion of food.