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2019 year, number 2

COMPARATIVE EVALUATION OF MORPHOMETRIC INDICATORS OF THE DENTAL AND BASAL MAXILLARY ARCHE DEPTH

Evgeniya Yur’evna EFIMOVA, Aleksandr Ivanovich KRAYUSHKIN, Urij Vladimirovich EFIMOV
Volgograd State Medical University of Minzdrav of Russia
Keywords: верхняя челюсть, зубные дуги, базальные дуги, краниотип, морфометрия, upper jaw, dental arches, basal arches, craniotype, morphometry

Abstract

The objective of the study was to conduct a comparative assessment of the morphometric parameters of the dental and basal maxillary arches depth on preparations of male skulls, depending on the craniotype. Material and methods. The study was performed on 106 preparations of male skulls of the first and second periods of adulthood with physiological occlusion of the teeth. The cephalic index was defined as the ratio of the lateral size of the cerebral cranial region to its longitudinal size. The depth of the dental arch was measured from the point located at the center of the cutting edge of the medial incisor to the point of intersection with the line connecting the distal surfaces of the crowns of the teeth at the level of the canines, first premolars, second premolars, first molars, second molars. The depth of the basal arches was measured from the most prominent points between the medial incisors from the vestibular and lingual sides of the jaws to the point of intersection with the line connecting the distal surfaces of crowns of canines, premolars and molars. The results of the study. The minimum and maximum limits and the average indicators of the dental and basal arches depth at the level of canines, premolars and molars were determined. A comparative analysis of indicators of the dental and basal arches revealed that on the mescephalic and dolichocephalic skulls the basal arches depth at the level of the canines was larger than the dental arches depth ( p < 0.01). The dental arches depth was larger than the basal arches at the level of premolars, and did not depend on the criniotype ( p < 0.001). At the level of the first molars, the basal arch depth at the palatal side was larger than the index of the dental arch ( p < 0.05). At the level of the second molars, the dental arch depth was larger than the basal arches depth of both surfaces ( p < 0.05 and p < 0.001). Conclusion. It was concluded that the dental arches depth of brachycephalic and dolichocephalic was significantly larger than the basal arch depth. The similarity of the basal arches depths at each measurement level in all craniotypes was revealed.