A student who wishes to treat diseases of the mouth may wish to study dentistry. Dentistry studies how to keep the teeth, gums, and other parts of the mouth healthy and how these parts interact with the body.

Russia (Russian: Россия) is by far the largest country in the world, covering more than one-eighth of the Earth's inhabited land area. The former State Committee for Higher Education in Russia financed 240 universities, academies and institutes, making Russia a solid country to study in.

Individuals who do not want to invest the time or money toward a formal degree can work to earn a diploma instead. This is ideal for individuals who just graduated from secondary school or those looking to change or jumpstart careers.