The series of 60 computed tomography scans of maxillofacial area performed in frontal projection, were used to study the peculiarities of mandible structure. The values of mandible morphometric parameters obtained with craniometric method and by computed tomography, were compared. The scope of computer-aided tomography in the evaluation of mandible structure variability was examined. The method of computer-aided tomography makes it possible to receive the data on mandibular corpus height and thickness and on the inclination angle of its alveolar part in the area of prospective surgical operation, as well as on the anatomic-topographical interrelations between teeth root apical portions and mandibular canal.