Summary: Physiological dentition exchange is often interfered with exogenous and endogenous factors. For this reason it must be steadily regulated. The authors present complex view on this topit based on literatury studies and own experience. The authors define fundamental principles „guided exchange", „tooth eruption" and „eruption path". Correct explication of these ideas is necessary for text understanding. Dentition exchange is considered as complex of eruption interactions of individual permanent teeth including molars. The project is based on idea that dentition exchange time is optimal for preventive interventions. At the end the authors underline the importance of global application of the above mentioned principles on the whole child population.

        Key words: dentition exchange - tooth eruption path - prevention of eruption disturbances