Entry into the oral cavity (vestibulum oris) is bounded by the lips, face and dental arches, the very mouth then defines the soft and hard palate, cheeks and tongue. The facilities include a large salivary glands – submandibular (submandilulární), sublingual (sublingual) and parotid (parotid).The oral cavity is a place phonation, taste perception and food processing first.

The most important action taking place in the oral cavity, the pulverization of food and its mixing with saliva. This is done by chewing, that involves the teeth on the one hand and, secondly, head muscles, most of them chewing muscle (musculus masseter). At this moment begins the process of digestion. Saliva is also contain digestive enzyme alpha amylase, which breaks down starches, ie complex carbohydrates to simpler sugars. Furthermore amylase is salivary mucin, which is formed and other sections of the digestive system, and has a protective function. An essential component of saliva is also lysozyme which is capable of destroying germs.

On digestion also contributes language whose glands produce little additional digestive enzyme, and lipase, which digests fats.

From the mouth of the food as well spolknutelného moist morsels before pharynx moved into the esophagus.

The most common diseases with problems associated with the oral cavity are different affections on oral mucosa and lips – may be cold sores, mouth sores, yeast overgrowth forming whitish coatings or bacterial infection. They are often affected gums, in middle age, more than half of the people suffering from periodontitis different gravity, which leads to the exposed dental necks, tooth pain, and what’s more, their looseness and loss. Furthermore, soft tissue can of course be damaged teeth. Everyone knows tooth decay resulting from the action of bacteria living in dental plaque and stone. There are indeed valid password that clean tooth is a healthy tooth. Neither oral cavity do not avoid various types of cancers.