• The Journal of the Korean dental association
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• v.12 no.7
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• pp.511-520
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• 1974

The dental caries experiences of 'K' primary school children, 819 male and 653 female, aged from 6 to 12, total 1472 children was examined and obtained the followings : 1) The dental caries prevalence in primary dentition was 82.05% in male and 84.23% in female, and the average of both was 83.02% 2) The dft Index was 3.79 in male and 3.97 in female, and the average of both was 3.86 3) The dental caries prevalence in permanent dentition was 86.57% in male and 89.28% in female, and the average of both was 87.77% 4) The DMF Index was 3.47 in male and 3.58 in female, and the average of both was 3.58

• Journal of Korean society of Dental Hygiene
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• v.14 no.4
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• pp.479-484
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• 2014

Objectives : The aim of the study is to investigate the oral health knowledge, attitude and dental caries experience in Korean 12-year-old adolescents. Methods : The subjects were 2,196 adolescents living in Seosan, with an average age of 12.2 years. Data were collected using a self-administered questionnaire from April 10 through June 10, 2011. A trained investigator made an oral examination of them in natural light, using a mirror and an explorer to determine their DMFT index. Results : The prevalence rate of dental caries of adolescents was 59.1%. The DMFT index of the subjects was 1.98, which was lower than the national mean of 2.2 for the same age. The DMFT index was significantly higher in the female(2.25) than the male group(1.72). The attitude of oral health was positively related to DMFT index in this study(OR=1.25; CI=1.01-1.54). It appears that knowledge and attitude concerning oral health, among young Korean 12-year-old adolescents living in Seosan, are in need of improvement. Conclusions : Based on the findings, dental caries experience is associated with attitude of oral health. This result suggests that the implementation of oral health promotion should be considered for various factors related to attitude of oral health in adolescents.

• Journal of the korean academy of Pediatric Dentistry
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• v.26 no.1
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• pp.162-171
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• 1999

The purpose of this study was to make a comprehensive study and to provide information about the dental caries of autistic persons, and to aid improvement of their oral health. The authors examined intraorally 114(male; 87, female; 27) autistic persons and 119(male; 68, female; 51) normal persons as control group. The obtained results were as follows: 1. Autistic persons were found to have lower dft rate than normal persons. 2. There was no significant difference in dental caries incidence between male and female autistic persons. 3. Institutionalized autistic persons were found to have lower dental caries incidence of deciduous teeth than non-institutionalized autistic persons. 4. Autistic persons whose parent's occupation is laborer were found to have higer dft index than those whose parent's occupation is private business or employee.

• Journal of Korean Public Health Nursing
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• v.13 no.2
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• pp.59-69
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• 1999

This study was conducted to investigate dental caries according to obesity in order to provide basic data for efficient dental health program for elementary school students. Data were obtained from a health record book of 668 elementary school students in Chun Cheon city in 1998. Obesity was categorized into overweight. normal and under weight groups by Rohrer index. Dental caries was classified into decayed. filled and missed teeth. The result were as follow: 1. Prevalence rate of dental caries(dft) was $78.7\%$ and mean dft was 2.96; decayed and filled teeth was 1.01 and 1.95. respectively. As for mean dft. a siginificant difference were shown according to obesity and age. while no siginificant difference was shown between boys and girls. 2. Prevalence rate of dental caries including missed teeth (dmft) rate was $83.9\%$ and mean dmft was 3.64. As for mean dmft. a siginificant difference were shown according to obesity and age. while no siginificant difference was shown between boys and girls.

• Journal of Korean society of Dental Hygiene
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• v.1 no.2
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• pp.201-211
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• 2001

Dental caries causes the majority of tooth loss among Koreans. Korea is experiencing an increase in dental caries. And it shows a high prevalence of caries in preschool children, which contrasted with the much-improved situation in developed countries. So, it is important to control caries from preschool periods in Korea. Recently, inspections of the teeth of preschool children for evidence of dental disease became a legislative duty in Korea following Oral Health Act(2000). But, standardized oral health programs in preschool children is not yet proposed. Therefore, it is necessary to develop an community based oral health program in preschool children. The purpose of this study was to obtain basic data for the development of community based oral health program in preschool children of Sungnam city. Oral health status in primary dentition were surveyed in 862 2-6 year-old preschool children of Sungnam city by WHO criteria. From the data, df rate, percentage of preschool child ren with active caries, dft index, dt rate, percentage of preschool children with pit and fissure sealant of each age were calculated, and discussed. The obtained results were as follows : 1. The experience of dental caries in primary dentition showed a tendency to increase quickly between 2 and 3 year old children. So, the oral health program in preschool children should be developed to prevent dental caries and control their oral health under three years of age. 2. In 5 year-old children, the percentage with active caries was 60.8% and dft index was 5.06. The dt rate showed a tendency to decrease as proportion to age, but even though 6 year-old children, the dt rate was 47.7%. Therefore, the annual screening dental examination and oral health education programs at the institution for preschool children should be developed to detect and treat dental caries in primary dentition at early stage. 3. The percentage of preschool children with pit and fissure sealant at six years of age was 10.2%. So, pit and fissure sealant and professional fluoride application programs in Public Health Center should be developed to prevent dental caries. 4. Also, it is necessary to establish oral health goals in preschool children and develop water fluoridation program 10 improve and preserve oral health of preschool children in Seongnam city, effectively.

• Journal of the korean academy of Pediatric Dentistry
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• v.1 no.1
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• pp.41-47
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• 1974

The dental caries survey of "K" primary school children was performed twice for one year interval and evaluated the transitional trend of dental caries prevalences. The number of children surveyed at the first year, 1973, was 819 boys and 653 girls; and the second year, 1974, was 815 boys and 661 girls aged 6 to 12. Under this survey, the following results were detected: 1. The average df person rate in deciduous teeth was increased by 7.52% in boy, 5.59% in girl and 6.65% of both. 2. The average df Index in deciduous teeth was increased by 0.13 in boy, 0.04 in girl and 0.1 of both. The average dt Index was decreased by 0.59 in boy, 0.64 in girl and 0.61 of both. The average ft Index was increased by 0.73 in boy, 0.68 in girl and 0.71 of both. 3. There showed no significant differences in DMF person rate between 1973 and 1974. 4. The DMFT Index of the permanent teeth was decreased by 0.19 in boy, and increased by 0.22 in girl. There showed no significant differences in both sexes between 1973 and 1974. The average DT Index was decreased by 0.43 in boy, 0.03 in girl and 0.31 of both. The average FT Index was increased by 0.23 in boy; 0.35 in girl and 0.29 of both. The average MT Index showed no significant differences in both sexes between 1973 and 1974.

• The Journal of the Korean dental association
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• v.14 no.8
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• pp.655-658
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• 1976

The auther had studied dental caries and periodontal disease and other important oral disease in the 806nout patient who came to dental Department in N.M.C. during 1974. The obtained results were as follows ; 1) The dental caries experience rate in the out patient of Dental Departanent in N.M.C. was 8202% and the D.M.F. teeth index was 3.3. 2) The decayed teeth index was 2.18 and the missed teeth index was 0.69 and the filled teeth index was 1065. 3) The periodontal disease rate was 82.8% 4) The oral cancer rate was 2%, mandible and maxillary fracture rate was 4%, and trigeminal neuralgia rate was 0.6%.

• Journal of Korean society of Dental Hygiene
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• v.13 no.4
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• pp.615-622
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• 2013

Objectives : The aim of the study is to estimate the dental caries experience and the factors influencing the dental caries in children and adolescents and to provide the data for effective management of oral health in children and adolescents. Methods : Subjects were 446 students randomly recruited in primary, middle, high school students located in Seoul from April 1 to May 31 2011. The data were collected by a questionnaire survey and direct oral examination. The collected data were analyzed with the SPSS WIN 14.0 program. Results : DMF in male accounted for 88.8% and that in female accounted for 89.1%. The oral promotion behaviors in female was significantly higher than those in male (p<0.001). Aged (p<0.05) and well-educated parents(p<0.001) tended to have better oral promotion behaviors. The higher oral health knowledge, the better oral health promotion behaviors. Better oral health promotion behaviors tended to have lower DMFT and DT index (p<0.01). In regression analysis, age, oral health promotion behavior in children and adolescents were related to the dental caries experience (p<0.001). Poor oral health promotion behaviors increased the dental caries experience. Conclusions : The active oral health care can prevent dental caries in children and adolescents. The concern for oral health care is important to maintain healthy dental hygiene.

• Journal of the korean academy of Pediatric Dentistry
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• v.8 no.1
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• pp.103-117
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• 1981

The data about dental caries obtained from 1438 preschool children (male 797, female 641) in Seoul aged from 3 to 6 were analyzed by their sexes, ages, jaws and teeth surfaces. The results were as follows. 1. dmf rate : 92.63% 2. dmft index : 6.06 dmft rate 30.81 % dmfs index : 11.82 dmfs rate 12.02 % 3. d,m & f rate d rate: 79.45% m rate: 8.15% f rate : 12.40 % 4. dft index : 5.94 5. The order of caries susceptible tooth 1. Lower deciduous 2nd molar 2. Lower deciduous 1st molar 3. Upper deciduous 2nd molar 4. Upper deciduous lateral incisor 5. Upper deciduous cental incisor 6. Upper deciduous lateral incisor 7. Lower deciduous canine 8. Upper deciduous canine 9. Lower deciduous central incisor 10. Lower deciduous lateral incisor 6. Predilection sites of each tooth A) Deciduous central incisor ; Max. : Mesial cavity Mand. : Mesio-distal cavity B) Decidous lateral incisor ; Max. : Mesial cavity Mand. : Distal cavity=Mesial cavity C) Deciduous canine; Max. : Labial cavity Mand. : Distal cavity D) Decidous 1st molar ; Max. : Disto-occlusal cavity Mand.: Disto-occlusal cavity E) Deciduous 2nd molar ; Max. : Linguo-occlusal cavity Mand.: Occlusal cavity 7. All the values in caries criteria in 1981 were somewhat lower than in 1968, but m & f rate were increased.

• Journal of the korean academy of Pediatric Dentistry
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• v.4 no.1
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• pp.45-52
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• 1977

The purpose of this study was to provide information concerning the dental caries incidence in cerebral palsy children, and to aid improvement of their oral health. The author examined 106 cerebral palsy children and 185 normal children as control group, between 3 and 15 years of age. The obtained results were as follows: 1) In the DMF person rate, DMFT rate and DMFT index, cerebral palsy children (74.68%, 16.24% and 2.76 respectively) showed remarkable increment compare to normal children. (14.28%, 6.95% and 1.20 respectively.) 2) In the df person rate, dft rate and dft index, cerebral palsy children(93.33%, 37.41% and 6.22 respectively) showed remarkable increment compare to normal children. (78.64%, 20.68% and 3.29 respectively.) 3) There showed no significant in sexual differences. 4) In the dental caries incidence of the permanent teeth, athetosis and paraplegia type was found higher than other types. 5) Cerebral palsy children was found higher than normal children in the oral hygiene index. 6) There was found out necessity of the continuous dental enlightenment and treatment through this study.