The prevalence of dental diseases among children aged 6 to 9 years

  • K. M. Duda The prevalence of dental diseases among children aged 6 to 9 years
  • O. I. Lebid The prevalence of dental diseases among children aged 6 to 9 years
Keywords: caries, teeth, children, prevalence, intensity


The dental health of the child population has been and remains an urgent problem in modern society. Systematic scientific research of dental caries as one of the most common human diseases has been going on for more than 200 years. The spread of dental caries in children in the period of temporary bite reaches 80–90 %, in the period of permanent bite – 70–80 %, in adults – 95–98 %.

The aim of the study – to learn the caries lesions of the teeth and the hygienic condition of the oral cavity among children 6–9 years old.

Materials and Methods. This article presents the results of a survey of 108 pupils aged 6–9 years, including 52 boys and 56 girls (48 and 52 %), as well as 42 children from a boarding school of Nove selo village (19 boys and 23 girls (45 and 55 %)). We studied the caries lesions of the teeth and the hygienic condition of the oral cavity among children 6–9 years of age according to the prevalence index, which was expressed in percent and intensity of caries of the teeth according to the CFE/cf index of the surfaces. The results were processed statistically using Student's criterion.

Results and Discussion. Analysis of the results made it possible to determine that the prevalence of dental caries among the pupils of the boarding school was 96 % with the intensity of the CFE/cf 6.5, while in children with general education the prevalence of caries is equal to 89 % with the intensity of the CFE/cf 5.8. Diseases of periodontal tissue were observed only in 28.2 % of children from secondary school and 19.2 % among pupils from boarding school, while others showed mild blotiness and bleeding gums – 71.8 % and 80.8 %, respectively, which indicates a wrong oral care and the presence of inflammation in the gums.

Conclusions. We found that the intensity and prevalence of caries among children 6–9 years old is quite high. That is, this period of the child's life is important for carrying out activities aimed at increasing the resistance of permanent teeth in the period of mixed bite. The above data showed that among the pupils from the boarding school the intensity and prevalence of carious diseases were higher than among children from general education schools of the same age.


Dychko, Ye.N., Kovach, I.V., & Verbytska, A.V. (2005). Riven hihiienichnoho stanu i stupin urazhennia kariiesom u pidlitkiv [Level of hygienic condition and degree of lesion of caries in adolescents]. Visnyk stomatolohii – Bulletin of Dentistry, 2, 61-62 [in Ukrainian].

Zhugina, L.F., Mushchuk, E.S., Kavryga, V.V., & Grytsyuta, S.M. (2010). Klinicheskaya otsenka effektivnosti kontroliruyemoy shkolnoy i “domashney” chistki zubov y pervoklasnikov 6–7 let [Clinical evaluation of the effectiveness of controlled school and "home" teeth cleaning in first-graders 6–7 years]. Stomatologicheskiy zhurnal – Dental Magazine, 4, 326-327 [in Russian].

Kaskova, L.F., & Marchenko, K.V. (2010). Stan hihieny porozhnynu rota na tkanyn parodonta u ditei iz zuboshchelepnymy anomaliiamu [Condition of hygiene of the oral cavity and periodontal tissues in children with dentofacial anomalies]. Aktualni problemy suchasnoi medytsyny – Current Problems of Modern Medicine, 10, 137-113 [in Ukrainian].

Kaskova, L.F., & Taranenko, N.M. (2005) Poshyrenist zuboshchelepnykh anomalii ta stan tverdykh tkanyn zubiv i tkanyn parodonta u ditei 11-16 rokiv [Prevalence of dentofacial abnormalities and the state of hard tissues of teeth and periodontal tissues in children 11-16 years]. Ukrainskyi stomatolohichnyi almanakh – Ukrainian Dental Almanac, 6, 51-54 [in Ukrainian].

Petrushanko, T.O., Chereda, V.V., & Loban, H.A. (2013). Yakisnyi sklad mikrobiotsenozu porozhnyny rota osib molodoho viku z riznoiu intensuvnistiu kariiesu [Qualitative composition of microbiocenosis of the mouths of young people with different caries intensity]. Svit medytsyny ta biolohii – World of Medicine and Biology, 1, 57-59 [in Ukrainian]

Smoliar, N.I., & Musii-Sementsiv, Kh.H. (2013). Poshyrenist ta intensyvnist kariiesu molochnykh zubiv u ditei iz zahalnosomatychnoiu patolohieiu [Prevalence and intensity of caries of milk teeth in children with general-somatic pathology]. Klinichna stomatolohiia – Clinical Stomatology, 3-4, 32-33 [in Ukrainian]

Smoliar, N.I., Solonko, H.M., Dubetska-Hrabous, I.S., Bezvushko, E.V., & Vashchych, O.P. (2012). Pidvyshchennia efektyvnosti profilaktyky rannioho kariiesu molochnykh zubiv shliakhom spivpratsi pediatriv ta dytiachykh stomatolohiv [Improving the effectiveness of prevention of early caries of milk teeth through cooperation of pediatricians and children's stomatologists]. Sovremennaya pediatriya – Modern Pediatrics, 5 [in Ukrainian]

Communication among oral bacteria / A. Leewenhoek, P. E. Kolenbrander, R. N. Andersen [et al.] // Microbiol. Mol. Biol. Rev. – 2002. – Vol. 66. – Р. 486–505.

Leewenhoek, A., Kolenbrander, P.E., Andersen, R.N., Blehert, D.S., Egland Foster, P.G., & Palmer, J.S. (2002). Communication among oral bacteria. Microbiol. Mol. Biol. Rev., 66, 486-505.

How to Cite
Duda, K. M., & Lebid, O. I. (2019). The prevalence of dental diseases among children aged 6 to 9 years. Clinical Dentistry, (1), 48-51.
Children’s stomatology