Abstract: | Of all the malocclusions, distocclusion is most frequently associated with functional disorders. 60% of the patients suffered from diseases of the upper respiratory tract. A classification into 9 forms is suggested (fig.). Treatment with the Fr?nkel type I and type II function regulators is performed in the active phase of growth at the end of the period of deciduous dentition and during the early period of mixed dentition. The rectification of the morphological and functional disorders that is simultaneously achieved justifies the recommendation of this treatment for practice. |