[Incidence of displacement of the front median line after unilateral early extraction of a deciduous cuspid].

600 persons with malocclusion were examinated to clear the hypothesis if one-side untimely extraction of the deciduous canine teeth will cause a displacement of the front median line towards the extraction side. 70 patients had untimely extractions in the maxilla, 53 in the mandibula. These patients showed an increased median displacement of the front median line towards the extraction side. Therefore, it is immportant to point to the demand for symmetric extraction.