The study of the apical bases has been relevant in orthodontics for many decades; its study was carried out both on jaw models and on lateral cephalograms. Dentistry today is impossible without three-dimensional studies, which allows you to study an object from any angle and visualize the smallest changes in the anatomical structures of the area under study. The use of cone beam computed tomography to study the apical bases of the jaws makes it possible to study the configuration, size, and position of both the bases themselves and the structures that form them. The parameters we proposed allow us to study the width, length and angle of inclination of the apical base on single CBCT sections. Clinical use of the proposed analysis will contribute to more complete and accurate orthodontic treatment planning.