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Résumé

La prévalence de caries dentaires et de certains facteurs relatifs aux caries ont été étudiés chez 100 enfants de 12 ans venant des provinces de Vientiane et de Luang Prabang dans la République Démocratique du Laos. La prévalence des caries dentaires était élevée, montrant un indice CAO de 4,6, et 9 % des enfants étaient sans caries. Le composant D contribuait le plus à l'indice CAO et l'indice Significatif de caries (SiC Index) était CAO 8.0. Quant aux facteurs relatifs aux caries, 25 % des enfants se trouvaient dans la classe élevée de mutans streptococcie, 31 % du groupe avaient un score élevé de Lactobacilli et 84-88 % des cas étudiés consommaient des en-cas sucrés (snacks), des chips et des boissons sucrées tous les jours.
Considérant la prévalence élevée de caries, la distribution de mutans streptococcie, la consommation fréquente de sucreries et aussi la basse concentration de fluor dans l'eau potable, les programmes préventifs de la santé orale sont indiqués pour éviter une éventuelle épidémie de caries dentaires au Laos dans le futur.

Abstract
Caries prevalence and some caries related factors for 12 year-old children from vientiane and luang prabang provinces in lao people' s democratic republic

Caries prevalence and some caries related factors for 100 twelve-year-old children from Vientiane and Luang Prabang provinces in Lao People's Democratic Republic were studied. The caries prevalence was high showing a DMFT of 4.6 with 9% of the children being caries free, the D comportment contributed mostly to the DMFT and the Significant Caries Index (Sic Index) was DMFT 8.0. As to the caries related factors, 25% of the children were in the high mutans class, 31% of the group had high or very high Lactobacilli scores and 84-88% studied took local sweet snacks, chips and sweet drinks every day.
Taking into consideration the high caries prevalence, the mutans streptococci distribution, the frequent intake of sweets and also the relatively low fluoride concentration in the drinking waters, oral health preventive programmes are indicated to prevent a possible caries epidemic in Laos in the future.