[Ergonomy--dentistry--biomechanics].

In this paper the authors present with scientifically--critically looking, ergonomicas--in interdisciplinary group of applied sciences, show the outstanding possibilities of complete analysis and improvement of "man--machine--environment system". With a scientific approach and use of the latest principles of modern ergonomics, the term of dental ergonomics is introduced in dental medicine. It particularly refers to the creation of different models of dental equipment, instruments and working areas, as well as to the investigation of the harmful factors and the effects of working environment on the dentist's health, especially, on the locomotor system which is mostly affected within the "dentist/patient/--equipment--environment system".