• Korean Journal of Community Nutrition
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• v.15 no.4
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• pp.429-444
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• 2010

The purpose of this study was to examine the relationship between bone density and dietary intake for college women in their twenties. This study was performed on 160 female college students residing in Gangwon-do. It was conducted using ultrasound measurement of calcaneus bone density, anthropometric checkup and food-frequency questionnaires (FFQ) comprising 94 kinds of commonly consumed foods. Subjects were divided into two groups according to the T-score of bone density: a normal group (n = 113 persons, T-score ${\geq}1$) and a risk group (n = 47, T-score < 1.0). The average age of the subjects was 20.17 years and there was no significant difference between the two groups. Body weight and body fat percentage of the normal group were significantly higher than those of the risk group. The mean daily energy intake of the normal group was significantly higher than that of the risk group. Also, protein, fat, vitamin A, niacin, vitamin B6, folate, calcium, phosphorus, sodium, potassium, iron and zinc intake for the normal group were significantly higher than for the risk group. For the intake of the commonly consumed foods (or dishes) listed in FFQ, the mean daily intake amount of loaf bread, rice cake, potatoes, spicy beef soup, cucumber, seasoned spinach perilla leaves, crown daisy, stir-fried mushroom, sea mustard, beef rib, ham, chicken, mackerel, common squid, drink type curd yogurt, oriental melon and chocolate in the normal group was significantly higher than in the risk group. While, the mean daily intake of ramyun (instant noodle) and carbonated beverage by the normal group was significantly lower than that of the risk group. In conclusion, 20 something female college students showed a higher rate (26.9%) of the bone mineral density risk group (osteopenia or osteoporosis). For the risk group, the levels of nutrient and food intake were lower than in the normal group. Therefore, the bone density risk group needs to increase their nutrient intake and diet quality by increasing the intake of various foods. In addition, they should decrease the intake of foods, which are negative for skeletal health such as instant noodles and carbonated beverages.

• Journal of the korean academy of Pediatric Dentistry
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• v.45 no.4
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• pp.464-473
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• 2018

The purpose of this study was to investigate the distribution of eruption disturbance and to analyze its causes, treatment methods, and duration of orthodontic traction, based on 703 patients with eruption disturbance who were treated in the pediatric dental clinic of Seoul National University Dental Hospital between July 2011 and June 2016. Eruption disturbance in pediatric patients was most prevalent in the maxillary canine, followed by the maxillary central incisor and maxillary first molar. Eruption disorder of the maxillary canine was more common in females (p < 0.001), whereas the maxillary central incisor (p = 0.009), maxillary first molar (p < 0.001) and mandibular first molar (p = 0.028) were more common in males than females. The most common causes of eruption disturbance were abnormality of the eruption pathway and the presence of obstacles in the pathway. Orthodontic traction was the most prevalent treatment choice for eruption disorder, mostly done for the maxillary central incisors. The duration of orthodontic traction was shorter with younger age (p < 0.001) and lower crown position (p < 0.001). It is important for pediatric patients to detect eruption disorders early through regular checkup, and it is necessary to initiate treatment at an appropriate time with an accurate diagnosis and treatment plan.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.2
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• pp.788-794
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• 2011

The purpose of this study was to investigate the correlation between regular mealtime, oral health knowledge and oral health to prevent dental impairment of college students. This research design is correlation study. Data of 903 were collected from June 1 to June 30, 2010. Data were analyzed using the SPSS PASW Statistics 18.0 Program. More than 50% of respondents were the irregular mealtime. Higher percentage of correct answer in the oral health knowledge showed periodontal disease prevention(82.6%). There were a statistical significant in grade, major, smoking, drinking, and wishing for dental care between general characteristics and regular mealtime respectively(p<.05). Between general characteristics and oral health knowledge were a statistical significant in gender, age, grade, smoking, and dental checkup respectively(p<.05). On the other hand, there was a statistical significant wishing for dental care between general characteristics and oral health(p<.001). Regular mealtime was negatively associated with oral health(p<.01). Education for oral health should include regular mealtime, prohibit of smoking and alcohol, right toothbrushing and so on.

• Journal of Korean society of Dental Hygiene
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• v.11 no.4
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• pp.475-487
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• 2011

Objectives : The growing elderly population and social changes have fueled a rapid increase in demand for elderly care facilities, but health care services for the elderly, especially oral health services, have long been overlooked. The purpose of this study was to examine the oral health care of elderly residents in elderly care facilities in an effort to provide some information on the elderly's oral health care and the development of dental care programs geared toward institutionalized elderly people. Methods : The subjects in this study were 230 elderly people who were in elderly care facilities in Jeolla Province. An individual interview was held, and they got a dental checkup. As for data analysis, t-test and ANOVA were utilized, and Scheffe post-hoc test was employed. Results : 1. In relation to the subfactors of the quality of life related to oral health, the elderly people investigated got a mean of 4.58, 4.47, 4.38, 4.09, 3.94, 3.91 and 3.76 respectively in activity disorder, mental disorder, social disorder, mental inconvenience, functional disorder, physical pain and physical disorder. 2. Concerning the overall quality of life related to oral health, there were statistically significant gaps in this aspect according to gender, age, presence or absence of systemic disorder, presence or absence of eating difficulties, subjective health status, subjective oral health state and oral health concern. 3. The presence or absence of root caries had a significant relationship to physical pain and social disorder among the subfactors of the OHIP-14, but that had nothing to do with functional disorder, mental inconvenience, physical disorder, mental disorder and activity disorder. Conclusions : The oral health indexes of the institutionalized elderly people in Jeolla Province were measured, and what factors affected the subfactors of oral health was checked. As a result, there appeared a close relation ship between oral health and the quality of life. Therefore effective oral health plans that cater to the elderly should be carried out to improve elderly people's quality of life related to oral health who stay in long-term elderly care facilities. In the future, prolonged research should be implemented from diverse angles for the sake of institutionalized elderly people.

• Journal of Korean society of Dental Hygiene
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• v.18 no.4
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• pp.441-453
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• 2018

Objectives: The purpose of this study was to contribute to the development of basic data for establishing and expanding the dental health centers in the future by examining the awareness of the dental health center establishment and the level of dental health knowledge in the school. Methods: A survey was conducted from April 2017 with 336 students over 10 years old in South Korea to investigate the awareness of the dental health center establishment in the school and their dental health knowledge level. The results were summarized as follows. Statistical analysis of the collected data was performed using the SPSS WIN 21.0 statistical program. Results: It was necessary to establish the dental health centers in the school with their establishment rate of 82.8%, and the reason for the establishment of the dental health center was the possibility of regular checkup with the highest at 43.6%. In the school, 62.8% answered no experience of dental health education with the highest rate. Dental health education in the school was answered to be necessary with 91.0% the most prevalent one. Factors affecting the recognition of the expected effect of establishing the dental health center in the school, it is expected that if the establishment of the oral health center is needed and the oral health education is needed in the school, And the perception of the effect is increased. Conclusions: 91% of the respondents considered that dental health education was necessary and 83% answered they needed dental hygiene. However, only 37.2% of the students experienced dental health education in the school. Therefore, it is necessary to expand the dental health center establishment, and to develop the foundation of life dental health care through regular dental examination and proper brushing education.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.5
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• pp.3323-3332
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• 2015

The purpose of this study was to investigated the effects of alcohol intake on blood pressure, serum lipids, liver function tests and obesity indices in middle-aged male workers. The 2,175 male workers aged 30-59 years who examined health checkup were recruited as the study subjects during the period between January to December, 2013. We observed the relationships between the amount of alcohol intake and blood pressure, serum lipids, liver function tests and obesity indices. As a result, the mean score of SBP, DBP, LDL-C and TG were significantly higher increasing with amount of alcohol increased, but HDL-C were significantly lower increasing with amount of alcohol increased. AST, ALT, ALP and ${\gamma}$-GTP were significantly higher increasing with amount of alcohol increased, but obesity indices were not significant. Age adjusted odds ratios(ORs) increasing with abnormal levels of SBP, DBP, HDL-C, LDL-C, TG, AST and ALT were significantly increased in heavy drinking group than light drinking group. Above results suggested that the heavy drink related with blood, serum lipid levels and liver function test levels, but not find out with obesity indices.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.2
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• pp.1145-1152
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• 2015

This study examined the serum lipid levels according to the obesity indices, and obtained the relationship between obesity indices and serum lipid levels among adults who underwent a health checkup in a university hospital. The subjects for this study were 4,112 adults aged 18 to 77 years who underwent medical examinations at the health center of a university hospital in Daejeon city from Jan 2012 to Dec 2013. The serum lipid levels (TC, HDL-C, LDL-C, TG, AI) and obesity indices (height, weight, waist circumference, body fat rate, BMI, WHR WSR) of the study subjects were surveyed from self-recorded questionnaires and medical examination charts of the hospital. As a result, the serum lipid levels (TC, HDL-C, LDL-C, TG, AI) of the study subjects were increased significantly with higher level of obesity indices (WC, body fat rate, BMI, WHR WSR) in both sexes. The TC, LDL-C, TG, and AI showed that positive correlated with the WC, body fat rate, BMI, and WSR in both sexes, but HDL-C was negatively correlated with the WC, body fat rate, BMI, and WSR in both sexes. The above results suggest that the obesity indices and the serum lipid levels are closely related, i.e., the serum lipid levels increase with increasing obesity indices.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.9
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• pp.4394-4401
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• 2013

The purpose of this study was to investigate the association of blood pressures and serum lipids, obesity indices in adults who examined health checkup. Study subjects were 2,734 adults of 20 years and over (1,344 males, 1,390 females), who underwent health package check-up at an university hospital during one year of 2012. We observed the age, sex, SBP, DBP, TC, TG, HDL-C, LDL-C, AI, BMI, body fat rate and waist circumference of study subjects after confirmed IRB of the hospital. As a results, TC, TG, AI was significantly higher in the group of hypertension than that of normotensive in both sex, but in only female, HDL-C and LDL-C was higher in the each group of normotensive and hypertension. BMI, body fat rate and waist circumference was significantly higher in the group of hypertension than that of normotensive in both sex. SBP and DBP was positive correlated with TC, TG, AI, BMI, body fat rate and waist circumference, but HDL-C and LDL-C was each correlated with positive and negative in female only. Age-adjusted odds ratio for hypertension by blood serum lipids and obesity indices was significantly increased in the group of abnormal than normal of TC, TG, BMI, but HDL-C and waist circumference was each increased in the abnormal group of female, and in the abnormal group of male. Above results suggested that the blood pressure related with serum lipid levels and obesity indices.

• The Journal of the Korea Contents Association
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• v.15 no.10
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• pp.362-373
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• 2015

This study analysed the effectiveness of aluminium(Al) filter in the added compound filtration for the removal of characteristic radiation from high atomic number material by DQE and image evaluation. 1mm Al was applied to each 0.1, 0.2, 0.3 mm copper and befere and after use were evaluated. Beam quality and DQE were tested by IEC regulations and image quality was evaluated by PSNR, MAE, MSE, CNR, SNR and qualitative analysis was performed by 7 items for resolution and contrast from chest x-ray criteria of national cancer checkup. MTF 10 and 50% were the same by 4.6, 2.54 cycle/mm and NPS, DQE, PSNR MAE, MSE, CNR, SNR and qualitative analysis were all the same or slightly better when Al was not used. PSNR is over 30dB and all significant and at the qualitative analysis, the p-value of t-test was over 0.05. The DQE and image quality evaluation have little difference between before and after use of Al filter and it is effective to use the Al filter for the reduction of skin dose by removal of characteristic radiation.

• Journal of Obesity & Metabolic Syndrome
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• v.26 no.1
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• pp.23-27
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• 2017

Background: In Korea, the prevalence of obesity has steadily increased, and the socioeconomic burden of obesity has increased along with it. In 2015, the National Health Insurance Service (NHIS) signed a memorandum of understanding with the Korean Society for the Study of Obesity (KSSO), providing limited open access to its databases so that the status of obesity and obesity management could be investigated. Methods: Using NHIS databases, we analyzed nationwide population-based studies for obesity using the definition of obesity (body mass index ${\geq}25kg/m^2$) in subjects over the age of 20. Age and sex standardization were used for all data. Results: The KSSO released the 'Obesity Fact Sheet 2016' using the 2006-2015 NHIS Health Checkup database. The prevalence of obesity steadily increased from 28.7% in 2006 to 32.4% in 2015, and the prevalence of abdominal obesity also steadily increased from 18.4% in 2009 to 20.8% in 2015. The prevalence of class II obesity steadily increased from 2006 to 2015, such that the total prevalence was 4.8% in 2015 (5.6% in men and 4.0% in women). The highest prevalence of obesity was found in Jeju Island, while the lowest prevalence was found in Daegu City. The highest prevalence of abdominal obesity was also found in Jeju Island, while the lowest prevalence was found in Gwangju City. Conclusion: Based on the Obesity Fact Sheet 2016, a strategy for reducing the prevalence of obesity is needed, especially in Korean men.