Introduction: malocclusions are a series of disorders in which the anatomic phy-siologic controls of the stomatognathic system are in disharmony with the dental segments. Epidemiological studies show that malocclusion have high prevalence rates of over 60% in the studied populations. The malocclusion research in populations of 4 to 5 years old report prevalence of 70 to 80%, which evolve to 96,4% in teenagers. Dacosta and Onyeaso report that the prevalence of dental malocclusions worldwide ranges from 65 to 89%. Objective: compare the type of malocclusion that is most frequently presented in odontopediatric clinics of the Autonomous University of San Luis Potosi and the University of Antioquia. Methodology: an observational study was conducted of transversal and comparative type with a convenience sample; a higher frequency of class i type 1 was seen in group 1, with a percen-tage of 52,7%, while in group 2, the predominant malocclusions where class ii div. 1, with a percentage of 23,6% and class iii with 22,5%. Conclusion: the results in each population were different. The diagnosis of occlusal alterations is recommended to be performed in a timely manner to allow the implementation of assistance programs that include therapy and functional orthopedics of the jawbone for an early rehabilitation of the stomatognathic system.