1. Fluor can reduce the progression of carious diseases when SMT> 3. While the index of permanent teeth carious of 12-year-old pupils in the North of Vietnam is 0.06, Fluor has no effectiveness to reduce the progression of carious to permanent teeth, it has effectiveness only to milk teeth, (SMT= 3.5) 3. There has been already one auxiliary dentist in primary school named Quang Trung in charge of dental hygiene education, regular scalling.. for school children these achievements do not however meet the expected results we actually need.
Fluorides ; DMF Index ; Tooth

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

DMF Index ; Dental Caries ; diagnosis ; Humans ; Risk Assessment

OBJECTIVETo assess the dental caries prevalence of children in Yinchuan.

METHODSThe 3-, 5-, 12-, 15-year-old children were chosed from nursery, primary and middle schools of Yinchuan in 1990, 1996 and 2001. The survey was carried out by five senior dentists from stomatologic hospital of Yinchuan according WHO criteria. DMFT, DMFS and the ratio of tooth filled were counted.

RESULTSFrom 1990 to 2001, the prevalence of dental caries of 3-, 5-, 12-year-old children was degression (P < 0.01). But the prevalence of dental caries of 15-year-old children had no obvious change. The dental caries of small proportion of children were serious. The ratio of tooth filling was low.

CONCLUSIONWith the development of oral health education, the prevalence of dental caries of 3-, 5-, 12-year-old children in Yinchuan is descend. But the diagnosis, prevention and treatment should be strengthened, and the ratio of tooth filling should be increased.

Child ; China ; DMF Index ; Dental Caries ; Female ; Humans ; Prevalence

PURPOSE: This study was performed to investigate the effects of oral health education on kindergarten children. METHOD: The study was designed as a quasi-experimental, nonequivalent control group pre -post test design. Data was collected from April 1st to November 30th, 2001. The total samples were sixty seven healthy kindergarten children; the experiment group consisted of thirty three and the control group was thirty four children. The experimental group received an oral health education program daily for 20 minutes for four weeks. RESULT : There was significant improvements on oral health behavior in the experimental group. Streptococcus mutans and lactobacilli of the salivary variables in the experimental group were significantly higher than the control group. The dmft was lower in the experimental group than the control group, but there was no significant difference between the two groups. However it was significantly lower in the experimental group than control group over time. CONCLUSION: Oral health education for kindergarten children showed an increase in the use of tooth paste and practicing correct tooth brush usage. Also, it decreased the rate of eating cariogenic food and had a positive effect on oral health through suppressing dental cavities.
Child, Preschool ; *DMF Index ; Female ; *Health Education, Dental ; Humans ; Male ; *Oral Hygiene

OBJECTIVEThe aim of this study was to observe the change of the prevalence of five-year-old children's dental caries for 10 years in Shanghai and to establish a related policy to provide a basis for the government.

METHODSThe sampling method was multi-stage, stratified, adqulis capacity and whole flock in this study. The method of third national survey for oral health was used. The data of prevalence of dental caries, dmft and relative component were collected and were compared with the data of the second survey in 1995.

RESULTSThe prevalence of dental caries, dmft, caries filling constitutent ratio of 5-year-old children in 2005 was 71.74%, 4.17, 7.70%, respectively, and denscend 6.54%, 0.59, 1.12% compare with the data in 1995. There was significant difference between them (P<0.01).

CONCLUSIONThe results showed the descend trend of prevalence of dental caries in 5-year-old children in Shanghai and the oral health condition had an obvious improvement. However, caries filling constitutent ratio was decreases. Therefore, it is very important to strengthen the public oral health care service for children.

Child ; Child, Preschool ; China ; DMF Index ; Dental Caries ; Female ; Humans ; Male ; Oral Health ; Prevalence ; Tooth, Deciduous

OBJECTIVEThis study aims to investigate the caries status of the first permanent molar and primary tooth among 7- to 9-year-old children in Tangshan city and the correlation between caries of primary tooth and the first permanent molar.

METHODSA stratified cluster sampling method was used on the basis of the Basic Approach of Oral Health Survey of WHO and the Guideline of the Third National Oral Health Survey. A total of 10 primary schools were randomly sampled in clusters that included 51 primary school sampling spots in Tangshan. The caries status of 1 794 children aged 7 years to 9 years was examined.

RESULTSThe prevalence rate of the first permanent molar caries was 47.49% (852/1 794), the mean number of DMFT was 1.30 ± 1.59, the mean number of DMFS was 1.96 ± 3.40, and the filling rate was only 2.35% (20/852). The preva- lence rate and mean DMFT of the first permanent molar caries showed significant difference between different ages and genders (P < 0.05). However, the mean DMFS of the first permanent molar caries only showed significant difference between the various ages (P < 0.05). The prevalence rate of the primary tooth caries was 83.11% (1 491/1 794), the mean number of dmft was 4.82 ± 3.55, the mean number of dmfs was 6.51 ± 5.61, and the filling rate was 12.41% (185/1 491). Caries of primary tooth was the first permanent molar caries risk factor [r = 0.277, OR = 5.736, P = 0.00, 95% CI (4.175, 7.881)]. Significant correlation was found between the caries of primary tooth and first permanent molar (r = 0.274, P < 0.001).

CONCLUSIONCaries status of the first permanent molar among 7- to 9-year-old children in Tangshan city is serious. Caries status of primary tooth may play an important role in predicting the first permanent molar caries in clinic and prevention.

Child ; DMF Index ; Dental Caries ; Humans ; Molar ; Risk Factors ; Tooth, Deciduous

OBJECTIVETo investigate the status of dental caries in the human of Tang dynasty.

METHODSAll teeth in 62 human skulls of Tang dynasty excavated from the Chang'an county in Xi'an city were examined and analyzed by statistics. The difference of prevalence in different group including age, sex and tooth position was tested with Chi-square test.

RESULTSThe prevalence of dental caries was 62.9%. And there were 92 caries teeth, which was 14.6% of the whole teeth. The root caries (33.3%) was more than the occlusal caries (28.7%). The most frequent recorded caries were the third molar, followed by the second molar, then the first molar. There was no significant difference between male and female.

CONCLUSIONSThe dental caries was popular in human of Tang dynasty, but the prevalence lowers than the modern people. And with the human evolution and the improvement of the social productivity, the prevalence of dental caries was gradually ascending.

Adult ; Archaeology ; China ; epidemiology ; DMF Index ; Dental Caries ; epidemiology ; Female ; Humans ; Male ; Middle Aged ; Prevalence

OBJECTIVETo investigate the difference between the results of using two standards(CPI and No.5 sharp probes) in the diagnosis of clinical dental caries during epidemiological survey.

METHODSThe CPI and No. 5 sharp probes were used respectively for the diagnosis of clinical dental caries in the same group of children aged 12 by the two examiners. This group of children were reexamined after 14 days to compare the consistency and the rate of coincidence of the location of teeth and caries average and the prevalence rate of dental caries diagnosed by the two kinds of probes.

RESULTSThe difference between the location of teeth with caries examined by the two different standards respectively by the same examiner was not statistically significant. The difference between caries average and the prevalence rate of dental caries examined with the two different standards respectively by the same examiner was also not statistically significant. The difference between the outcomes of the crossover comparison by the two examiners showed no statistical significance.

CONCLUSIONSThere was no significant difference between the two diagnostic standards for caries. The outcomes of the diagnosis based on both standards shows a similarity. CPI could replace No. 5 sharp probes due to its convenience in large scale of oral health survey.

Child ; China ; epidemiology ; DMF Index ; Dental Caries ; diagnosis ; epidemiology ; Female ; Humans ; Male ; Prevalence

OBJECTIVETo investigate caries status of primary and permanent teeth among 6-year-old children in Sichuan Province and correlation between caries of deciduous molars and first permanent molars.

METHODSReferenced to the sampling programme of the third national epidemiological survey of oral health status, a total of 714 children aged 6 were randomly sampled in clusters including 3 urban sampling spots and 3 rural sampling spots, the correlation between caries of deciduous molars and first permanent molars was explored.

RESULTSThe prevalence rate of deciduous tooth caries of 6-year-old children in Sichuan province was 74.37%, the mean number of dmft of 6-year-old was 3.94 +/- 3.93, the filling rate was only 4.96%. The prevalence rate and mean dmft of deciduous tooth caries showed no significant difference between different area and gender (P>0.05), however, the children came from city showed significant higher filling rate than those from countryside (P<0.05). The first permanent molars erupted have 2.98% in caries, the filling rate was 7.69%. Caries of deciduous molars was the first permanent molars caries risk factors among 6-year-old children in Sichuan province [P=0.001, r=0.175, OR=5.756, 95%CI (1.733, 19.121)]. There was weak correlation between caries of deciduous molars and first permanent molars (P<0.001, r=0.194).

CONCLUSIONCaries status of primary among 6-year-old children in Sichuan Province are serious. Caries experience of deciduous molars may play an important role in predicting the first permanent molars caries in clinic and prevention.

Child ; DMF Index ; Dental Caries ; Female ; Humans ; Male ; Molar ; Prevalence ; Risk Factors ; Tooth, Deciduous