Dental arch Transversal characteristics in boys and girls with orthognathic bite: head shape and face type dependence

Abstract

In this work, we describe the boundary percentile scope values of transversal characteristics of the dental arch of boys and girls of Podillia, with diagnosed orthognathic bite. The study group consists of individuals with different forms of head and face. Our findings are that, in girls, unlike boys, set differences exist in the transversal dimensions of the upper and lower jaw, both in the distribution of the shape of the head, and the type of face. In boys with different head shape, larger values of transversal size of dental arch are evidenced when contrasted with the corresponding groups of girls, regarding the maxilla in 46.7% of all cases and the mandible in 22.2% of all cases, as well as with different types of faces in 66.7% of cases regarding the maxilla and 55.6% in the mandible.

Models of Individual Linear Dimensions Necessary For the Construction of the Correct Form of Dental Arches in Young Men With a Wide Face, Depending On The Features of Odontometric and Cephalometric Indicators

“…The fact of the relationship of the cranial skull with the parameters of the upper and lower jaws is proved. Differences of transversal sizes of lower and upper jaws in girls and boys with different head shapes revealed [1]. Specifics were also found in such odontometric parameters as the root length of the incisors and canines on the upper and lower jaws.…”

Computer-tomographic characteristics of dental arts in young men and women with physiological bite, depending on types of faces

“…[17] and Gunas I., Glushak A. and Samoylenko A. [19], between boys and girls of Podillia with orthognathic bite with the corresponding facial types, the following differences in the size of dental arches were found: in boys with wide and very wide faces higher values of the transverse size of the upper (in all cases, in boys with wide faces) and lower jaw (mostly in boys with very wide faces) are determined, than in girls; and in boys with a middle face -larger values are established only for the distances between the cutting hollows of the canines, the distance between the molar points by Pon and between the tops of the neighbors buccal edge of the 36 and 46 teeth. Sex differences in the value of the vertical characteristics of the dental arc between adolescents with different facial types are practically not established [17].…”

“…When comparing differences in the sizes of dental arches between young women of Podillia with orthognathic occlusion with different face types [17,19], smaller values of the distance between the tops of the canines, the distance between the molar points by Pon, the displacement of the 16 tooth relative to the palatal suture and the linear size between the tops of neighbors buccal edge of 36 and 46 teeth in young women with a broad-face than young women with middle faces; and for young women with a middle face -only smaller values of the depth of the sky at the level of canines than those with other types of faces.…”

Correlation of Transversal Dimensions of the Jaws and Sagittal Characteristics of the Dental Arch With Odontometric and Cephalometric Indices in Boys With Orthognathic Bite

“…In the upper and lower incisors, the canines, small and first large angular teeth were measured: the length of the tooth; the length of the root in the vestibule-lingual and mesiodistal projections; mesiodistal crown size of the tooth; vestibule-lingual size; the width of the dentin-enamel border in the mesiodistal direction; the width of the dentin-enamel border in the vestibule-tongue direction. Since in previous studies, when comparing the computer-tomographic metric characteristics of the same tooth names on the right and left sides, there were no reliable or trend differences, we in subsequent studies used mean values of the corresponding teeth on the upper and lower jaws [10,16].…”

“…In young men with orthognathic bite, the following multiple bonds of reliable and average strength of false correlations of transversal dimensions of the upper and lower jaw and sagittal characteristics of the dental artery with odontometric and cephalometric indices are established: direct, mostly reliable, average strength (r from 0.31 to 0.56) connections of distances between the tops of the distal and medial roots of the upper first large angular teeth, between the points of the Pon on the upper first large and small angular teeth, between the vestibular medial bulges the first large angular teeth and between the tubercles of the canines of the upper and lower jaws with the majority of mesiodistal dimensions of the crowns of the teeth, the parameters of the width of the dentin-enamel border in the vestibule-tongue direction (with the exception of the distance between the tops of the distal roots of the upper first large angular teeth), more than half the vestibule-language size of crowns of teeth, practically all distances from auricular point to glabella, nasion, subnasion and to intercaniel point; direct reliable average strength (r from 0.31 to 0.49), the distance between the tops of the medial roots of the upper first large angular teeth with the majority of teeth length indices; direct reliable average strength (r from 0.31 to 0.58) connections of premolar and molar sagittal distances of the upper jaw with the majority of mesiodistal and vestibule-lingual dimensions of the crowns of the teeth, as well as the width of the dentin-enamel border in the vestibule-language direction; direct reliable average strength (r from 0.35 to 0.45); the connections of the cervical sagittal distance of the upper jaw with most indicators of the width of the dentin-enamel border in the vestibule-language direction; direct, reliable mean power (r from 0,32 to 0,44), the connections of all parameters of the maxillary dental arch in the sagittal plane with the width of the mouth gap; direct reliable average force (r from 0.37 to 0.56), the connections of all parameters of the maxillary dental arch in a vertical plane with sagittal and transverse arcs, height of the upper part of the face, the distance between the nasion and the intercanine point, and between the nasion and the prosthion. Some studies have proved the existence of connections of teeth and dental arches with parameters of the craniofacial complex, taking into account racial and constitutional features [10,12]. Both dental arches, as part of a single functional apparatus, are associated with strong correlations among themselves, and therefore integrated with the whole morphological system of the head and, possibly, the whole body [21].…”