• Journal of the korean academy of Pediatric Dentistry
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• v.26 no.1
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• pp.25-31
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• 1999

The purpose of study was to test the hypothesis that preschool children who experienced nursing caries have high dft index and caries activity in primary dentition. One thousand and seventy-five preschool children from 4 to 6 years old were examined for their caries experience and salivary invertase activity by Resazurin Disc Test. Nursing caries group was identified by the criteria of having more decayed and filled teeth among the upper incisors than among the upper molars. The prevalence of nursing caries was 15.8%. The dft index of nursing caries group was significantly higher than that of the other groups except the rampant caries group(P<0.01). The Resazurin Disc Test score of nursing caries group was significantly higher than that of the other groups(P<0.01) and there was no difference between nursing caries group and rampant caries group. Therefore, it is recommended that children who experienced nursing caries should be incorporated in the caries prevention program through the primary and mixed dentition.

• Journal of Korean society of Dental Hygiene
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• v.2 no.2
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• pp.187-200
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• 2002

The purpose of this study was to obtain the basic data provide continuous and active dental treatment for the mental handicapped children. The authors studied on the dental caries experience, oral hygiene slates and caries activity test in the mental handicapped children of 9-11 years old, who are housed by rehabilitation school in Kwang-ju and in the 30 normal children of 9-11 years old as a control group. Correlation coefficiency was calculated among the caries experience, oral hygiene states and caries activity test for every children. The obtained results are as follows. 1. The mental handicapped children showed remarkably high score compared to normal children in DMFT index(The Index score was $2.43{\pm}1.98$ in the normal children and $5.26{\pm}4.11$ in the mental handicapped.). 2. Correlation coefficiency was reveled very high score between DT index and DMFT index of the normal children(P<0.01), and the mental handicapped was also high score(P<0.01) between ft index and dmft index. 3. The PMA Index of the mental handicapped children was comparatively higher than the normal(The Index score was $4.03{\pm}4.44$ in the normal children and $7.87{\pm}7.33$ in the mental handicapped.). 4. In the correlation coefficiency between the caries experience and modified snyder test, DMFT index of the normal children was revealed some high score(P<0.05). DMFT index of the mental handicapped was showed remarkably high score(P<0.01).

• Journal of the korean academy of Pediatric Dentistry
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• v.26 no.1
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• pp.1-13
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• 1999

To study the caries patterns in primary dentition, 719 preschool children, 4-6 years old, were examined for their caries activity(salivary reductase activity) and caries experience of individual teeth. Teeth groups were made by cluster analysis using dft indexes of individual teeth as criteria. The six major teeth groups in the order of dft index from high to low were (1) lower primary molars, (2) upper primary molars, (3) upper central incisor, (4) upper lateral incisor, (5) canines, and (6) lower incisors. There were significant differences in dft index between teeth groups except upper lateral incisor and canines. Upper and lower primary molars showed the highest correlation in dft index, and the next couples were upper central incisors and upper lateral incisors, upper lateral incisor and canines, upper central incisor and canines, upper lateral incisor and upper primary molars, and canines and upper primary molars in descending order. Upper first primary molar showed the greatest differences in dft index between caries activity levels.

• Journal of dental hygiene science
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• v.13 no.1
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• pp.91-96
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• 2013

The purpose of this study was to examine the possibility of the existence of high-risk groups of dental caries and influential factors for the high-risk groups, as there was a possibility that certain people might especially be at risk of suffering from dental caries when decayed, missing, and filled teeth index were analyzed, which were the typical indicators of dental caries. The data of the 4th National Health & Nutrition Survey for 2007, 2008 and 2009 were analyzed. Significant caries index (SiC index) were calculated, which were one of the representative devices to indicate high-risk groups of dental caries, and the SiC index and related factors were analyzed by using $x^2$ (chi-square) test. Besides, logistic regression analysis was utilized to find out influential factors, and a statistical package STATA 11.0 was employed. As a result of analyzing what factors would be linked to high-risk groups of dental caries, it's found that women were more likely to belong to high-risk groups than men (p<0.01). How the related factors affected the high-risk groups was analyzed, and it's found that those who didn't find themselves to be in good oral health were more likely to be classified into a high-risk group, and that those who brushed their teeth three times a more a day on a regular basis were more likely to belong to a high-risk group than the others who didn't (p<0.01). Thus, SiC index were calculated in this study to confirm the existence of dental caries high-risk groups, and what factors impacted on the high-risk groups was ascertained. It's required to implement efficient national policies to step up the promotion of national oral health based on the findings of the study.

• The Journal of Korean Society for School & Community Health Education
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• v.12 no.1
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• pp.35-44
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• 2011

Objectives: The purpose of this study were to measure the effect of factors analyse the associated by the oral health behaviors and dental health services utilization factors of dental caries in the middle-school student's and then to provide basic material of preventive oral health and oral health education program. Methods: This subject of study consists of 342 middle schools each 1,2,3 grade Daegu city. The data were collected from July 2 to 30, 2009. by way of the self-reported questionnaire. The data materials are analyzed by demographic characteristics, oral health behaviors and dental health services utilization of frequency analysis, demographic characteristics of dental caries and oral health behaviors and dental health services utilization of one-way ANOVA analysis. Results: Brushing twice a day, which was the higher 69.3%, Students were trained received oral health education. Girls than boys dental caries teeth(DT) index (p<0.05), dental filling teeth(FT) index(p<0.00), dental experience caries teeth(DMFT) index(p<0.00) was higher than all three variables was a statistically significant. Oral health behavior of brushing twice a day 'once' dental caries teeth(DT) index was the highest, there was statistically significant difference (p<0.01), oral health education students experience a higher dental caries teeth(DT) index(p=0.36). dental health services utilization of preventive dental visits last one year when they did not have dental caries teeth(DT) index was higher (p=0.076) Conclusions: Oral health promotion is considered to adolescent as part of the oral health clinics school for elementary school students in the focus to middle school students and enhance.

• Journal of Korean society of Dental Hygiene
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• v.20 no.5
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• pp.593-602
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• 2020

Objectives: This study aims to assess the relationship between the body mass index and waist circumference, which are indicators of obesity, and dental caries according to gender. Methods: Data were used from the 6th Korean National Health and Nutrition Examination Survey (2013-2015). Out of a total of 29,321 subjects, 13,222 persons aged 19 or older and who responded to the survey items of this study were selected as subjects to determine the relationship between obesity and dental caries. Results: In the body mass index, the obese group had a higher prevalence of dental caries in both males (1.25 times) and females (1.35 times) than the normal group. Even in the underweight group, males were 1.83 times more likely to have dental caries than the normal group. In the waist circumference, the obese group had a 1.48 times higher prevalence of dental caries than the normal group in women only. Conclusions: According to the results of this study, it was observed that obesity was related to dental caries, and it was thought that obesity management and oral care education programs for adults in Korea were necessary.

• Journal of dental hygiene science
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• v.5 no.2
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• pp.89-95
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• 2005

Dental caries is the most prevalent dental issue of childhood. So it is important to control caries form 5 years children and above all, the study of oral health status have been preceding for preventive dental caries. The purpose of this study was to assess the oral health status of 5 years children in seongnam city. The study population consisted of 1035 kindergraten children which had been selected stratified random sampling. The survey is based on WHO, 2000 oral health assessment, which has been modified. From data dt index, ft index, dft index, dt rate, ft rate, percentage of active caries, percentage of pit and fissure sealant, and so on. The findings were as follows: (1) In 5 years children, the experience of dental caries was 73.0% and the percentage with active caries was 49.4%. Dmf index was 4.13 and this observation shows a statistical singnificance. (2) Average number of 5 years children the experience of dental caries surface index was 3.11 and dfts index was 8.91. (3) The experience of dental caries fo the frist molar was 1.9% and the percentage with active caries was 1.1%. Otherwise the percentage of pit and fissure sealant of the first molar was 6.7%. It is show the low percentage for preventive dental caries. (4) Shows percentage of teeth needing treatment for one surface and above two surface was each 27.3%, 34.0%. And percentage of children required single crown and pulp treatment & single crown and tooth extraction was each 3.8%, 4.7%, 3.3%. (5) Soojung-gu and jungwon-gu were having poor oral hygiene as compared to bundang-gu. So it is necessary to establish community oral health program effectively. And for preventive dental caries and early diagnosis and early treatment consider with community characteristic.

• Journal of the korean academy of Pediatric Dentistry
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• v.43 no.2
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• pp.151-157
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• 2016

The purpose of this study was to evaluate the relationship between obesity and dental caries in young children. The subjects were 769 children aged 3 to 6 years, in Iksan, Korea. Body mass index (BMI) and decayed and filled primary teeth (dft) were recorded. Children were classified into four groups (underweight, normal, obese at risk, and obese) according to their BMI percentile. The data of 754 participants, excluding 15 underweight children, were analyzed. The mean dft index was 3.39. There were no significant differences in the number of caries according to gender. The dft index increased significantly with age, with a sharp increase between ages 4 and 5. Children in the obese at risk and obese groups had more caries than those in the normal group. However, there were no statistically significant differences in dft index values between BMI-categorized groups except in 3-year-olds. These findings suggest that there is no significant connection between obesity and dental caries in primary teeth.

• Journal of Korean society of Dental Hygiene
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• v.13 no.5
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• pp.881-888
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• 2013

Objectives : The purpose of the study is to investigate the risk factors of dental caries in early childhood. Methods : Subjects were 197 mothers having 5 year old children. They completed the questionnaire from June 1 to July 14, 2012. Results : At birth, the age of mother and the number of teeth experiencing dental caries showed high correlation(r=0.163, p<0.05). Early beginning(r=-0.441, p<0.05) and long period(r=0.441, p<0.05) of mix feeding were closely related to dental caries outbreak. Long period of supplementary food caused deciduous dental caries (r=0.643, p<0.001) and dental caries experience (r=0.723, p<0.001). Long period of breast feeding (r=0.261, p<0.001) also caused deciduous dental caries. Low BMI of mother was colsely related to high dental caries(r=-0.206, p<0.01). Deciduous dental caries accounted for 61.8% and the number of teeth experiencing dental caries was 68.5%. Conclusions : Appropriate breast feeding habit is the most important behavior of preventing deciduous dental caries in 5 year old children.

• Journal of the korean academy of Pediatric Dentistry
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• v.21 no.2
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• pp.456-462
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• 1994

The purpose of this study was to investigate the relationship between the caries experience and anxiety level to the dentist in the preschool children. 511 preschool children were brought to the dental hospital and examined for caries experience. Caries experience was measured as dDT index, fFT index, dDfFT index, dDT rate, and fFT rate. Children were requested to draw a dentist. Drawings were analyzed by the method of Human Figure Drawing Anxiety Score. Pearson correlation coefficents and their significance were calculated between caries experience and anxiety scores. There were significant negative correlation between fFT index and anxiety scores, between dDfFT index and anxiety scores, and between fFT rate and anxiety scores. There was significant positive correlation between dDT rate and anxiety scores. The results seemed to suggest that dental treatment experience reduced children's anxiety toward dentists. But, because there was obvious negative correlation between age and anxiety scores, age factor should be considered in the interpretation of the results.