Dimensional characteristics of the frontal mandibular part

Abstract

Background. A research objective: the analysis of the morphometric laws of the bone tissue of the dental-mandibular segments of incisors. Methods. 174 anatomic mandibular preparations of people of mature age of both sexes with physiological occlusion were studied. Preparations were sawed on 14 segments on intertooth septs in vestibular-lingual direction. Each segment on identical distance from the object was photographed in medial and distal norms. Increase necessary for the subsequent mathematical calculations was defined by the comparison of the sizes of the marked sites on the sample and in a photo. Results. The height of dental-mandibular segments from the alveolar crest to the basis was 36.27±0.64 mm. The height of the alveolar part of every dental-mandibular segment corresponded to the length of the same named tooth root and varied in a wide range. The areas of the dental-mandibular segments, and also the area of spongy and compact substances of medial and lateral incisors did not differ reliably. Conclusions. The areas of dental-mandibular segments as well as the areas of separate structures of the bone tissue have no reliable difference. The thickness of compact substance reliably increases from the top part of dental-mandibular segments in a direction to their basis. The greatest thickness of spongy substance is observed in the bottom part of the vestibular part of dental-mandibular segments that is connected with the presence of mental ledge.