The project was carried out to examine the fluoride concentration of the natural water from northern provinces. The result of research will be applied on the Oro-dental Health care of children and community. 179 samples of water from 10 northern provinces were tested. The result of research showed that in almost of sources of water (97.8%) there is not enough fluoride. So the use of fluoride to prevent dental carries for children and community is necessary and urgent.
Periodontal Diseases ; Fluorides

The research was carried out invitro to assess anticaries efficacy of toothpastes. 9 groups of enamel samples were treated with 9 kinds of toothpaste including 8 fluoride-toothpastes (marketed in Vietnam) and 1 placebo (no fluoride). The result of this study showed that fluoride-toothpaste had ability to increase fluoride component of the enamel so it has anticaries efficacy. But the different dentifrice’s anticaries efficacy was also different.
Fluorides ; Dental Enamel

The study was carried out in vitro to determine the changes of fluoride concentration in tooth enamels that were treated with fluoride dentifrices. The analysis of enamels showed that the fluoride from dentifricaes has been delivered into tooth enamels to contribute to the process of remineralisation at the areas of demineralised enamels. So the fluoride dentifrices have efficacy in preventation of dental caries. The difference of fluoride concentration in enamel samples demonstrated that the anticaries efficacy of dentifrices was also different.
Fluorides ; Toothpaste ; In Vitro ; Dental Enamel

Fluoride has been used to prevent dental caries for children and community since 1945. In Vietnam, there are over 4 millions children who are using fluoride topically in schools across the nation. Conducting children to rinse their mouth by fluoride water has became one of the interventions of school dental program for over past 20 years. So it is necessary to determine the fluoride absorbability into tooth enamel in order to assess its anti-caries ability indirectly. This study was carried out to assess the ability of fluoride for caries prevention when using topically. Tooth enamels after treated in pH cycling with conditions as in the oral cavity were analyzed to determine the fluoride concentration. The results showed that significant of fluoride was absorbed into tooth enamel. It was al so suggested that fluoride that are provided by the School Dental Program has ability in prevention from dental carries.
Fluoride absorbability into tooth enamel in-vitro

This study was carried out to determine the fluoride concentration in tea water, natural water as well as the optimum of fluoride concentration in drinking water. Tea water was found to contain high concentration of fluoride. The fluoride concentrations in tea water range from 1.35 to 4.00 ppmF. These levels are 2-5 times higher than the optimum of fluoride concentration. Population in the North has habit of drinking tea water, so the source of fluoride in tea should be considered when determining total fluoride intake.
Dental Caries ; Water ; Tea

A cross – sectional survey on dental caries in 3181 Vietnamese adults, who are over 18 year olds and live in 7 geographic areas of Vietnam, showed that the percentage of Vietnamese adults who had dental caries is high. The percentage of caries and the DMFT index increase across the age groups. There is no difference in caries percentage between male and female but it is different between urban population and rural population, in the same age group urban population had more caries experience than rural population. The percentage of filling teeth is very low, from 1.49% to 6.38% depending on age groups. The percentage of missing teeth due to untreated is very high and increase across age groups
Dental Caries ; Adult

The study is a survey on oro-dental diseases in 1132 children who were over 6 years old and living in the North Central Coastal and South Central Coastal areas. The subjects were divided into 4 age groups: 6-8, 9-11, 12-14 and 15-17. Results: The percentage of children 6-8 years old with caries in the primary dentition was high, from 83.7% to 91.6%. The percentage of children who had caries in the permanent dentition increased across the age groups. The percentage of children who had not caries was much more lower than WHO’s standard. In all age groups, the percentage of children in the South Central Coast who had dental caries was higher than children in the North Central Coast. The percentage of children 6-14 years old with gingivitis in the South Central Coast was higher than in the North Central Coast
Child ; Delivery of Health Care

2688 primary school pupils and sencondary school children in the whole of the country, aged 6-11 years old, living in mountain, plain, central and northern areas, southern. A high prevalence of gingivitis inflammation of 42,7- 71,4% was concluded in all age groups, higher in rural area than in urban and increasing with the age. There fore the programme of dental oral care for school children in the whole of country, including oral hygiene education must be promoted.
Gingivitis ; Child ; Vietnam ; Epidemiology

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.
Dental Caries ; Vietnam ; Child

Research randomly 1132 adults from ≥18 years old who living in North Central Coastal and South Central Coastal areas by deviding period method. The objects were examines dental caries situation and periodontal diseases acording to assement method of WHO. Result: The percentage of adults who had dental caries is high, from 93.2% to 97.8%. The DMFT index increases across the age groups. The situation of dental caries in adults of the North Central Coast is higher than in the South Central Coast. Periodontal diseases: The percentage of adults who had gingivitis and periodontitis is high, from 92.45t-100%. The percentage of adults at age 45 and the older who had periodontal pocket is high, from 30.2% to 35.6%. The percentage of people who had acceptable gingival health is very low, and lower than 10%. Oral health situation of community is not get targets of EEC and of WHO.
Stomatognathic Diseases ; Adult ; Epidemiology