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

The program of SCDC has been organised at all 25 primary and secondary schools of Gia Loc district during 1989-1990 to prevent dental caries for children aged 6-15. The program’s activities include dental health education, conducting children to rinse their mouth by fluoride water 0.2% weekly and clinical preventation. After 8 years, the situation of dental caries reduced. At age of 12, the ratio of dental caries reduced 56.05% and DMFT reduced 79.41%. This result confirms that the contents of SCDC are suitable. Especially the situation of dental health shows that in 1997-1998 we reached WHO global goals and Vietnam goals for the year of 2010.
Schools, Dental ; Delivery of Health Care ; DMF Index

The school-based dental preventive program has been developed strongly in many areas of the whole country. Especially, the program has been covered at level of province such as Ninh B×nh and Nam §Þnh. Its preventive results were very high. Dental caries were reduced and periodontal status is improved. Through the study of fluoride concentration in the natural water, we determine that the use of fluoride mouthwash for children at school is necessary to reduce dental caries.
Preventive Dentistry

10 samples of Colgate dentifrice marketed in Vietnam were analysed in this study. The total fluoride content of each sample was determined by measuring the voltage of level-known standard solutions and that of sample test solutions, using Fluoride Selective Electrodes. The results revealed that total fluoride content of these samples is high, stable and not lower than level of 1,000 - 1,200 ppm in samples.
Fluorides ; Dentifrices

The project was carried out to determine total fluoride on Colgate dentifrices. 10 samples of Colgate Dentifrices markerted in Vietnam were analysed. The total fluoride content was determined by measurement of solution voltage with fluoride Ionic Selective Electrode. The results of research showed that the total fluoride content on the above mentioned detifrices is high, stable and is not lower than level of 1,000-1,200 ppm.
Colgate Total ; Quality Control

The study is a cross-sectional survey on the situation of dental caries in the population living in the Red river delta and in the Mekong river delta. The result of the study indicated that: 1. In both areas, the percentage of primary dentition is very high. The percentage of caries in the permanent dentition and DMFT index increases a cross the age groups in both areas. In the Mekong river delta, the situation of caries in children is more serious. 2. The percentage of adults who had dental caries is very high in both areas and the DMFT index in Mekong river delta is higher. 3. Almost all children 6-14 years old who had dental caries are untreated in both areas. In other groups, the percentage of filling teeth is higher but it is still in very low level and also lower than 8% for all age groups
Dental Caries, Epidemiology