Class III malocclusion are complex anomalies of the skeletal and dental systems. The aim of this study is that the sample of 30 untreated orthodontic patients, aged 18-30 years, rendgencephalometrics analysis closer to determine the mor- phological characteristics of this malocclusion. In patients previously clinically diagnosed class III. For this analysis, were used in a number of cephalometrics points on the basis of which the measured angles and planes. The results were compared with the patients with class I malocclusion and they point to the following morphological characteristics of class III maloc- clusion: a smaller cranial base, normognathic and normal size maxilla, prognathic mandible and chin, the greater the total mandibular length, open gonial angle and a larger anterior and lower posterior facial height. Key words: malocclusion; morphology; cephalometrics
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