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Medicina is published by MDPI from Volume 54 Issue 1 (2018). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Lithuanian Medical Association, Lithuanian University of Health Sciences, and Vilnius University.
Open AccessArticle

Dental caries prevalence among 12–15-year-olds in Lithuania between 1983 and 2005

1
Clinic of Oral Care and Paediatric Dentistry
2
Clinic of Prosthodontics, Kaunas University of Medicine, Lithuania
*
Author to whom correspondence should be addressed.
Medicina 2009, 45(1), 68; https://doi.org/10.3390/medicina45010010
Received: 14 June 2008 / Accepted: 6 January 2009 / Published: 11 January 2009
Objective. To analyze the dynamics of prevalence and severity of dental caries among 12- and 15-year-old schoolchildren in six regions of Lithuania.
Material and methods
. A total of 5910 schoolchildren aged 12 and 15 years were examined. Dental caries was diagnosed according to the criteria of World Health Organization. The prevalence of dental caries was calculated by dividing the number of children with caries by the number of all children examined and expressed as percentage. Severity of dental caries was described by DMF-T index. DMF-T indices of individual persons as well as each age group were determined. Oral hygiene was evaluated by a simplified oral hygiene index. Fluoride concentration in Kretinga was 1.6–2.2 ppm; in the other regions, it varied between 0.2 to 0.4 ppm.
Results. The prevalence of dental caries among 12-year-olds was 88.4% in 1983 and 85.5% in 2005; among 15-year-olds, it was 95.5% and 92.9%, respectively. Mean DMF-T score decreased from 4.5 (in 1983) to 3.7 (in 2005) among 12-year-olds and from 6.4 (in 1983) to 5.6 (in 2005) among 15-year-olds. Oral hygiene index decreased from 1.69 in 1983 to 1.34 in 2005 among 12-year-olds and from 1.46 to 1.22 among 15-year-olds, respectively.
Conclusions
. A tendency towards decrease in the prevalence and severity of dental caries was observed, when caries prevention program was running. Correlation between oral hygiene and DMF-T was observed in both age groups. Decreased prevalence and intensity of dental caries among 12- and 15-year-olds were associated with improved oral hygiene, usage of fluoride toothpaste, and fluoride content in drinking water.
Keywords: dental caries; prevalence; DMF-T index; schoolchildren; prevention dental caries; prevalence; DMF-T index; schoolchildren; prevention
MDPI and ACS Style

Milčiuvienė, S.; Bendoraitienė, E.; Andruškevičienė, V.; Narbutaitė, J.; Sakalauskienė, J.; Vasiliauskienė, I.; Slabšinskienė, E. Dental caries prevalence among 12–15-year-olds in Lithuania between 1983 and 2005. Medicina 2009, 45, 68.

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