The article is devoted to the conceptual analysis of Orthodontic Terminology. According to the basic positions of Cognitive Linguistics the concepts are nominated on the basis of the ideas about them and develop in the course of practical human activity. The category of Space is the main one for all sections of Orthodontics. On the basis of this fact, the main spatual (dimentional) components were observed, which are the main components of the conceptual framework and are more often find their linguistic objectification: the place, the form, the size. These components are very important in the Orthodontics consepts formation, because of the need in accurate diagnosis and treatment methods. The article investigates the traditional ways of term formation: morphological, lexical-semantic, syntactic and mixed.