INTRODUCTION: In Colombia, in the clinical practice of orthodontics and functional orthopedics, has been implemented dynamic emission of diagnostic and prognostic based on international standards of growth and craniofacial development validated in different populations with environmental and genetic characteristics to the historical and environmental context the mestizo population. It is important to rescue the diagnostic valuable contribution of the cephalic radiography in the diagnosis of the patient and thus establish averages that fit the Antioquia mestizo population. METHODS: A crosssectional study involving 68 individuals in mixed and permanent dentition. Cephalometric measures and through genetic analysis was assessed in each individual's ancestry for each of them (European, Ameridinan and African). Cephalometric averages were established for the total sample and for each of the ancestry groups, differences between them were analyzed and their association was determined. RESULTS: Statistically significant differences in SNA were found, being more increased in the group with low European component and measures Go-Gn / SN, Go-Me / FH and WITS with higher values for the group with high European component CONCLUSIONS: The subjects with high European ancestry tend to have greater vertical rotational component of the jaw and subjects with low European ancestry to have higher anteroposterior maxillary.