Indicators of permanent teeth eruption in children of Tashkent city and comparative assessment with the data of peers of different Russian cities

Relevance. Characteristics of eruption of secondary teeth is of diagnostic and prognostic interest, is the basis for implementation of targeted therapeutic and preventive measures among children. No research has ever been carried out in Uzbekistan to study an age and gender regional features of secondary teeth eruption. The aim is to determine the timing and symmetry of secondary teeth eruption in children of the city of Tashkent of the Republic of Uzbekistan and comparative assessment with the children of different cities of Russia.

Materials and methods. 3,834 children between 3 and 17 years were conducted dental examination. A comparative analysis was made of the initial, intermediate and final periods of eruption of secondary teeth for children of Uzbekistan (Tashkent city) and Russia (Saratov, Izhevsk and Sergach).

Results. In Tashkent children of both gender, in most cases, lower teeth were erupted before than their antagonists. In girls, teeth were erupted earlier than their male counterparts. At the initial stage of eruption, asymmetry was more pronounced in boys than in girls, while in the middle and final stages it was more pronounced in the opposite direction. Observed asymmetry of antimere’s teeth were indicated left-handed permanent dentition in boys and right-handed in girls. Children of Tashkent city were observed permanent dentition in one group of teeth 1-16 months earlier, and in others – 1-24 months later than their peers in Russian cities. Revealed differences were more pronounced among boys than among girls. Children in Tashkent differed more from their peers in Sergach and less from those in Izhevsk.

Conclusions. Regional peculiarities of permanent dentition in children of Tashkent city and revealed expressed differences with indicators of Russian children are the basis for development of separate age and  gender normative assessment permanent dentition tables for children of Uzbekistan. 

1. R. Almonaitiene, I. Balciuniene, J. Tutkuviene. Factors influencing permanent teeth eruption. Part one – general factors. Stomatologija. Baltic Dental and Maxillofacial Journal. 2010;12:67-72. https://pubmed.ncbi.nlm.nih.gov/21063135/.

2. E. S. Bimbas, M. M. Saipeeva, A. S. Shishmareva. Terms of permanent teeth eruption in children of primary school age. Problems of dentistry, Ekaterinburg: UGMU. 2016;12(2):111-115. (In Russ.). https://cyberleninka.ru/article/n/sroki-prorezyvaniya-postoyannyh-zubov-u-detey-mladshego-shkolnogovozrasta.

3. D. V. Denisenko, L. M. Janovsky. Age of teething of permanent teeth in different regions: modern aspect. Siberian Medical Journal. 2006;3:9-11. (In Russ.). https://cyberleninka.ru/article/n/vozrast-prorezyvaniya-postoyannyh-zubov-v-razlichnyh-regionah.

4. E. V. Udovitskaya, K. R. Kamalian. Systematization of the criteria characterizing the teething process dynamics: Review. Dentistry. 1990;69(3):89-91. (In Russ.).

5. L. B. Belugina. Permanent teeth eruption in children of Saratov city and its correlation with anthropometric data and ecosocial conditions. Autoref. dis. … cand. of medical sciences. Volgograd. 2004:24. (In Russ.). https://www.dissercat.com/content/prorezyvanie-postoyannykh-zubov-udetei-g-saratova-i-ego-korrelyatsiya-s-antropometricheskim.

6. S. I. Volkova, Y. V. Gretchenko. Peculiarities of formation of the dental system in children and teenagers of the Sergach city, Nizhny Novgorod region as one of the indicators of their biological maturation. [Abstract]. Young scientist. 2016;3(107):359-361. (In Russ.). https://moluch.ru/archive/107/25719.

7. A. G. Vatlin. Permanent dentition in children of Izhevsk and its correlation with anthropometric data and eco-social conditions. Autoref. … cand. of medical sciences. Volgograd. 2006:22. (In Russ.). https://www.dissercat.com/content/prorezyvanie-postoyannykh-zubov-u-detei-g-izhevska-i-egokorrelyatsiya-s-antropometricheskim.

8. V. G. Galonsky, A. A. Radkevich, N. V. Tarasova, A. I. Volynkina, A. A. Shushakova, V. O. Tumshevits, E. A. Tepper. Regional peculiarities of terms of permanent teeth eruption at children in Krasnoyarsk (Part II). Siberian Medical Journal. 2012;27(2):162-166. (In Russ.). https://cyberleninka.ru/article/n/regionalnye-osobennosti-srokov-prorezyvaniyapostoyannyh-zubov-u-detey-na-territorii- krasnoyarska-v-sovremennyh-usloviyah-chast-ii.

9. L. M. Yanovskiy, D. E. Urbanovich. Justification of optimal terms and order of primary prevention of tooth decay in children. Siberian Medical Journal. 2004;5:67-72. (In Russ.). https://cyberleninka.ru/article/n/obosnovanieoptimalnyh-srokov-i-ocherednosti-provedeniya-pervichnoy-profilaktikikariesa-zubov-u-detey.