Primary tooth caries in Vietnamese children

84,4% of children aged 6-8 years old sulfered from caries of milk tooth. In average, each subject of thin aged had got 5,07 milk teeth experienced by caries and 12,98 tooth surfaces were destroyed by caries. The incidence of this dental condition was different from geographic areas. In south coast area in Central Viet Nam and MeKong delta, the incidence was higher than other areas and higher than 90% and a very low percentage was treated, almost no significance, especially in North mountain area, north coast and south coast of Central Viet Nam central Highland.