Features of correlations of computer-tomographic sizes of premolars with cephalometric indices of practically healthy men from the western and eastern regions of Ukraine
According to the data of modern scientific literature in order to achieve goodfunctional and aesthetic indicators, prevention of the development of relapse in theprocess of orthodontic treatment should take into account the interdependenceodometometric and cephalometric indicators. In this case, orthodontists need to makean amendment to the features of correlations characteristic of one or another ethnicgroup of the population. The purpose of this study was to establish the features of theconnections of linear computational-tomographic sizes of premolars and their roots withcephalometric indices of practically healthy men of the Western and Eastern regions ofUkraine. On the basis of the medical center "Vinintermed LTD", 71 healthy and healthymen aged from 19 to 35 years from the Western region (n = 36, residents from Volyn,Rivne, Lviv, Chernivtsi, Ternopil, Khmelnytsky, Transcarpathian and Ivano-Frankivskregions) and the Eastern region (n = 35, residents from Kharkiv, Donetsk and Luhanskregions), a cone-ray computer tomography was performed using the Veraviewepocs-3D dental cavity beam (Morita, Japan). On cone-ray computer tomograms small angularteeth of the upper and lower jaws were measured: the length of the tooth; the lengthof palatal and cheek's roots of small angular teeth of the upper and lower jaw; heightof tooth crown; vestibular-lingual dimensions of the crown and neck of the tooth;mesio-distal dimensions of the crown and neck of the tooth. Cephalometric studieswere conducted taking into account the generally accepted recommendations andanatomical points. The statistical processing of the obtained results was carried outusing the statistical software package "Statistica 6.1" using the nonparametric Spirmanmethod. A number of anthropogenetic studies confirmed the division of Ukrainians intoregional groups (East, West, North, South), divergence between them reaches a highlevel. Therefore, the difference between the correlations of odonto-kefalometricindices between regions with a larger taxonomic distance (east-west, north-south)should be expected. As a result of the conducted researches in practically healthymen the following regional features of connections of linear sizes of premolars withcephalometric indicators of a brain skull are established: the Western region is mainlydirect reliable (r = 0.34 - 0.45) and unreliable average force (r = 0.30 - 0.36) connections(9.0% on the upper jaw, of which the relative majority are with the height of teeth andtheir crowns and the length of the roots and 7.6% on the lower jaw, of which the relativemajority is mesio-distal and vestibular-lingual sizes); the Eastern region - mostly reversereliable (r = -0.34 - 0.45) and unreliable mean strength (r = -0.30 - 0.34) connections(5.1% on the upper jaw and 5.4% on the lower jaw, in both cases the relative majoritywith the height of the teeth and their crowns and the length of the roots). The followingregional peculiarities of connections were established with the indicators of the facialskull: the Western region - mostly direct (r = 0.33 - 0.57) and unreliable meanstrength (r = 0.30 - 0.42) connections (9.9% on the upper jaw and 12.2% on the lowerjaw, in both cases the relative majority of mesio-distal and horse-lingual dimensions);Eastern region - mostly direct (r = 0.34 - 0.52) and unreliable mean strength (r = 0.30 - 0.44) connections (7.4% on the upper jaw, of which the relative majority with heightteeth and their crowns and the length of the roots and 9.2% on the lower jaw, of whichthe relative majority are mesio-distal and vestibular-lingual dimensions).Keywords: regional features, premolars, cephalometry, correlations, practically healthymen
 Alekseev, V. P., & Debets, G. F. (1964). Craniometry. Methodology of anthropological research. M.: Science.
 Andriychuk, V. М., & Zayets, P. V. (2012). Regional features of the influence of the geological environment on the anthropometric parameters of men. Ukrainian morphological almanac, 10(1), 3-6.
 Arzhantsev, А. P., & Ahmedova, Z. R. (2014). Features of X-ray examination in endodontic treatment. Endodontics today, 3, 13-19. DOI: 10.17116/stomat201594439-43.
 Bezvushko, Ye. V., Chukhrai, N. L., Ahmad, H. D., & Shtybel, N. V. (2013). Formation of embryos of third molars in children living in areas with high fluorine content in drinking water according to orthopantomogram. Journal of Medical and Biological Problems, 4(2), 270-273.
 Bunak, V. V. (1941). Anthropometry: a practical course. М.: Uchpedgiz.
 Demirturk Kocasarac, H., Altan, A. B., Yerlikaya, C., Sinanoglu, A., & Noujeim, M. (2017). Correlation between spheno-occipital synchondrosis, dental age, chronological age and cervical vertebrae maturation in Turkish population: is there a link? Acta Odontol. Scand., 75(2), 79-86. DOI: 10.1080/00016357.2016.1255352.
 Diachenko, V. D. (1965). Anthropological composition of the Ukrainian people. К.: Scientific thought.
 Dmitriyev, M. О., Gunas, І. V., Filimonov, Yu. V., Yakubovsky, М. М., & Holub, L. М. (2005). Correlation of angular parameters of the face and cellular linear dimensions in urban teenagers in Podillya region of Ukraine with orthognathic bite. Journal of Morphology, 11(1), 100-103.
 Gayvoronsky, I. V., Gaivoronsky, A. I., Gaivoronskaya, M. G., Dubovik, E. I., Kevorkova, S. A., Koltunov, A. V., ... Shchanikova, A. S. (2008). Craniometric correlations of the dentoalveolar system, temporomandibular joint and facial skull in an adult. Morphology, 133(2), 29.
 Glushak, А. А. (2015). Vestibule-oral sizes of teeth in boys and girls with orthognathic bite, depending on the shape of the head and face type. Bulletin of the Vinnytsia National Medical University, 19(1), 37-43.
 Gunas, І., Glushak, A., & Samoylenko, A. (2015). Dental arch Transversal characteristics in boys and girlswith orthognathic bite: head shape and face type dependence. Current Issues in Pharmacy and Medical Sciences, 28(1), 44-47. DOI: https://doi.org/10.1515/cipms-2015-0041.
 Kalmin, О. V., Myasnikova, Е. L., & Nikishin, D. V. (2013). Interrelation of dentotype with cephalotype and face shape of children residing in Penza. News of higher educational institutions. The Volga region. Medical sciences, 1(25), 20-30.
 Kolokitha, O. E., & Topouzelis, N. (2011). Cephalometric methods of prediction in orthognathic surgery. J. Maxillofac. Oral Surg., 10(3), 236-245. DOI: 10.1007/s12663-011-0228-7.
 Naumovich, S. S., & Naumovich, S. А. (2012). Cone-ray computer tomography: modern possibilities and prospects of application in stomatology. Modern dentistry, 2, 31-36.
 Noback, M. L. & Harvati, К. (2015) Covariation in the Human Masticatory Apparatus. Anatomical record, 298, 64-84. DOI: 10.1002/ar.23067.
 Orlovskiy, V. O. (2017). Features relations computed tomography sizes of premolar teeth with cephalometric indicators of practically healthy men from northern and southern regions of Ukraine. Biomedical and Biosocial Anthropology, 29, 73-77.
 Povorozniuk, V. V., Zadorozhna, І. V., & Pavlyuk, Т. D. (2011). Structural-functional state of teeth and periodontal disease in children living in different regions of Ukraine (clinical and epidemiological research). Journal of dentistry, 4, 105-106.
 Profit, R. W., Fields, H. W., & Sarver, D. M. (trans. from the English; Ed. L.S. Persina) (2006). Modern orthodontics. M.: MYe Dprеss-infоrm.
 Rasulov, I. М. (2011). Odontological and odontoglyphic studies of the characteristics of teeth in persons of different nationalities and the prospects for using the data obtained in dentistry (Doctoral dissertation). http://www.dissercat.com.
 Sah, S. K., Zhang, H. D., Chang, T., Dhungana, M., Acharya, L., Chen, L. L., Ding, Y. M. (2014). Maxillary anterior teeth dimensions and proportions in a central mainland chinese population. Chin J. Dent. Res., 17(2), 117-124. PMID: 25531020.
 Segeda, S. P. (2001). Anthropological composition of the Ukrainian people: ethnogenetic aspect. К.: Publisher them O. Teliha. ISBN 966-7601-34-Х.
 Shaweesh, A. I. (2017). Mesiodistal and faciolingual diameters of the permanent teeth in a Jordanian population. Arch. Oral. Biol., 73, 253-258. DOI: 10.1016/j.archoralbio.2016.10.026.
 Smerdina, L. N., & Smerdina, Yu. G. (1997). Morphology of the dentoalveolar system in large and small populations. Bul. East-Sib. sci. center SО RАМN, 1, 61-64.
 Smerdina, Yu. G. (2007). Ethnic features of odontological features. The successes of modern natural science, 8, 63-64.
 Ward, D. H. (2015). Proportional Smile Design: Using the Recurring Esthetic Dental Proportion to Correlate the Widths and Lengths of the Maxillary Anterior Teeth with the Size of the Face. Dent. Clin. North Am., 59 (3), 623-638. DOI: 10.1016/j.cden.2015.03.006.
 Yusupov, R. D., Alyamovsky, V. V., & Nikolaev, V. G. (2013). Ethnic features of cephalometric indices and manifestations of odontological signs of the population of Eastern Siberia. In the world of scientific discoveries (Krasnoyarsk), 7, 139-156.
 Zadorozhna, І. V. (2010). Structural and functional state of teeth and periodontal disease in children and adolescents living in different regions of Ukraine. Problems of osteology, 13(1), 47-49.
 Zubov, А. А. (2003). Odontology. Methodology of anthropological research. M.: Science.
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