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대한예방치과·구강보건학회> 대한구강보건학회지

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THE JOURNAL OF THE KOREAN ACADEMY OF DENTAL HEALTH

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수록범위 : 1권1호(1967)~44권1호(2020) |수록논문 수 : 1,628
대한구강보건학회지
44권1호(2020년 03월) 수록논문
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1작은 밀알의 힘을 기대하며

저자 : 진보형 ( Bo-hyoung Jin )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 1-2 (2 pages)

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2와타나베법 치은자극효과로 유도되는 치주조직의 숙주활성화요법

저자 : 와타나베타츠오 ( Tatsuo Watanabe )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 3-6 (4 pages)

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3일부 시판 깔라만시 함유 음료가 치아표면에 미치는 영향

저자 : 김은경 ( Eun-kyoung Kim ) , 박해령 ( Hae-ryoung Park ) , 정경이 ( Kyung-yi Chung ) , 최충호 ( Choong-ho Choi ) , 정성숙 ( Seong-soog Jeong )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 7-12 (6 pages)

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Objectives: The aim of this study was to investigate the effects of some commercial calamansicontaining beverages on the sound surface of bovine teeth as well as the dental erosion inhibitory effects of calcium.
Methods: The pH and titratable acidity of six kinds of commercially available calamansi beverages were determined. Further, 3% calcium was added to the calamansi beverage Oranssi in the experimental group to confirm its dental erosion inhibitory effect. Jeju Samdasoo was used in the negative control group and Coca-Cola in the positive control group. After immersing the sound teeth specimens for 10 min, surface microhardness was measured using the Vickers hardness number (VHN), and surface changes in specimens were observed under a scanning electron microscope.
Results: The average pH of the commercial calamansi beverages was 2.54±0.22. After 10 min of treatment with each experimental beverage, the surface hardness difference (ΔVHN) was highest in the Coca-Cola group (―49.05±12.59), followed by the Oranssi calamansi group (―43.77± 13.70), 3% calcium-added Oranssi calamansi group (―2.71±12.58), and Samdasoo group (14.03± 20.79). There was no significant difference between the bottled water and calcium-added Oranssi calamansi groups or between the Coca-Cola and Oranssi calamansi groups (P>0.05). However, there was a significant difference in the surface hardness between the bottled water and Coca-Cola groups (P<0.05). On scanning electron microscopy, the Samdasoo group showed a smooth surface without any loss, but Coca-Cola and Oranssi calamansi groups showed a rough surface due to erosion. However, although fine cracks and porosities were seen in the calcium-added Oranssi calamansi group, surfaces in the group were much smoother than those in the Oranssi calamansi group.
Conclusions: Calamansi beverages of low pH may cause corrosion of the tooth surface, and the addition of calcium to the calamansi beverages inhibits demineralization of the tooth surface. Therefore, it is necessary to consider the risk of dental erosion when drinking calamansi beverages of low pH.

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4우식원세균 바이오필름 모델에서 다양한 농도의 Galla Chinensis 추출물의 항균효과

저자 : 김은정 ( Eun-jeong Kim ) , 진보형 ( Bo-hyoung Jin )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 13-19 (7 pages)

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Objectives: Galla chinensis inhibited the adherence of planktonic oral bacteria and acid production by cariogenic bacteria. However, little is known about the relevant conditions of Galla Chinensis extract (GCE) exposure time and concentration and the effect of GCE on the structural and functional activity of cariogenic bacteria. The antibacterial effects of natural G. Chinensis extract on S. mutans, S. sanguinis, and S. oralis biofilms were evaluated in vitro.
Methods: Biofilms formed on glass surfaces were treated with different concentrations of GCE at different exposure times. The effects were assessed by examining the bactericidal activity, acidogenesis, minimum inhibitory concentration, and morphology.
Results: There was a statistically significant difference in the bacterial growth inhibition depending on the concentration of the GCE, with bacterial growth being inhibited as the concentration of GCE increased. A concentration of 1.0 mg/ml GCE had similar bactericidal effects against S. mutans and S. oralis biofilms to those produced by 2.0 mg/ml CHX. In the 1.0 mg/ml GCE group, incomplete septa were also observed in the outline of the cell wall, together with disruption of the cell membrane. In addition, there was also a slight exudation of the intracellular content from the bacteria in the 1.0 mg/ml GCE and 2 mg/ml CHX groups.
Conclusions: These results indicate that GCE inhibits the growth of S. mutans, S. sanguinis, and S. oralis with increasing concentrations. It alters the microstructure of S. mutans biofilms. These results suggest that GCE might be a useful anti-bacterial agent for preventing dental caries.

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5아동 · 청소년 대상 불소도포 급여화에 필요한 건강보험 재정 추계

저자 : 전지은 ( Ji-eun Jeon ) , 정세환 ( Se-hwan Jung ) , 한동헌 ( Dong-hun Han ) , 이새롬 ( Sae-rom Lee ) , 류재인 ( Jae-in Ryu )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 20-25 (6 pages)

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Objectives: This study aimed to estimate the financial budget of fluoride application in the National Health Insurance.
Methods: The amount of fluoride application was calculated by using the sealant rate (utilization rate 1), dental examination rate (utilization rate 2), and the average rate of these two (utilization rate 3) in children and adolescents. For the next five years, 100% of the existing fees were applied to estimate the financial budget.
Results: The total budget for children and adolescents was estimated to be 22.0 billion won minimum and 83.5 billion won maximum in the first year, and 104.8 billion won minimum and 398.5 billion won maximum up to the next five years. Moreover, in high risk groups, the total budget was estimated to be 4.2 billion won minimum and 16.1 billion won maximum in the first year, and 18.6 billion won minimum and 70.8 billion won maximum up to the next five years.
Conclusions: The financial budget of fluoride application coverage for children and adolescents was similar or lower than that of the current dental sealants. It needs to implement promptly with the reason of financial saving over the long-term point of view. Based on this evidence, it is affordable and necessary to begin to promote oral health for children and adolescents.

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6김정은 시대의 북한 구강보건의료 발전방침과 실태에 대한 탐색적 연구

저자 : 이새롬 ( Sae-rom Lee ) , 정세환 ( Se-hwan Jung )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 26-33 (8 pages)

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Objectives: Studies on oral health care in North Korea are being pursued in South Korea. However, the covertness of North Korea offers substantial resistance to the access of information from the country, including in the field of oral health care. In this study, we explored North Korea's oral health care policy and its status in the Kim Jong-Un Era.
Methods: We used existing information from Internet searches and also interviewed three health care professionals who had recently contact with North Korea.
Results: At present, there are four development policies of oral health care in North Korea: expansion of dental institutions and resource support, strengthening the prevention and treatment of dental diseases, improvement of dental prosthetics, and increasing the responsibility and role of the dental workforce. In addition, there has been an increasing interest in children's oral health with the development of a few programs.
Conclusions: In order to improve overall oral health care, cooperation is required from North Korea in accessing relevant information in the field of children's oral health, dental prosthetics, and dental materials. For this to occur, there should be a preliminary trust building process between North Korea and South Korea as well as access to information from reliable sources.

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7한국에서 분리된 Streptococcus mutans의 분자 역학 및 특성

저자 : 김세연 ( Se-yeon Kim ) , 배일권 ( Il Kown Bae ) , 이정하 ( Jung-ha Lee ) , 신정환 ( Jeong Hwan Shin ) , 김진범 ( Jin-bom Kim )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 34-40 (7 pages)

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Objectives: We investigated the characteristics of Streptococcus mutans in the national culture collection from Korea. Twenty-nine (dental plaque, n=27; endodontic infections, n=1; blood, n=1) isolates were included in this study.
Methods: Antimicrobial susceptibilities were tested using the disk diffusion test. Multilocus sequence typing (MLST), serotyping, and collagen-binding genes were used for polymerase chain reaction (PCR) and direct sequencing. A collagen-binding (to assess the adhesion properties) assay was performed. S. mutans demonstrated high susceptibility to antimicrobial agents. Differences in collagen-binding abilities of the cnm-positive and -negative groups were compared using the Mann-Whitney U test (P<0.05).
Results: MLST analyses revealed 25 sequence types (STs), 17 of which (ST213-ST229) contained new alleles. The strains were classified into four serotypes with the c type encompassing 79.3% of all strains, while the e , f , and k types representing 6.9% each. Analysis of the cnm and cbm genes, which encode the two surface adhesin components of S. mutans , revealed three cnm -positive strains, each displaying greater adhesion ability than those of the cnm -negative strains.
Conclusions: This study highlights the presence of a wide variety of S. mutans genotypes in Korea. These findings may provide useful information regarding the pathogenesis of infectious diseases, such as dental caries.

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8치주염유발세균 복합체의 분포에 따른 구강건강상태

저자 : 김지혜 ( Ji-hye Kim ) , 이동익 ( Dong-ik Lee ) , 임상욱 ( Sang-uk Im ) , 전은숙 ( Eun-suk Jeon ) , 송근배 ( Keun-bae Song ) , 최연희 ( Youn-hee Choi )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 41-47 (7 pages)

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Objectives: The purpose of this study was to evaluate the association between the distribution of periodontopathic bacteria and oral conditions.
Methods: Stimulated saliva was collected from 162 adults aged 60 years and above. The prevalence and amount of periodontopathic bacteria in the saliva were analyzed using real-time PCR. Pocket depth and clinical attachment loss were examined to evaluate the oral conditions of the subjects. Patients who had at least one tooth surface involved, with a pocket depth ≥4 mm or clinical attachment loss ≥5 mm were classified as having periodontal disease.
Results: The detection rates of most bacteria in the orange and green complexes were more than 90%, while those of P. gingivalis and T. forsythia in the red complex were 58.6% and 61.7%, respectively. The number of bacteria in the red complex positively correlated with each other. There were no significant differences in the number of types of red complex bacteria in the saliva and the distribution of residual number of teeth and periodontal disease (P>0.05). On the other hand, the number of remaining teeth in subjects with higher bacterial density were more than those with lesser bacterial density. In addition, the occurrence of dental disease differed significantly depending on the number of P. gingivalis and T. forsythia.
Conclusions: The relative amount of periodontopathic bacteria is important in the occurrence of periodontal disease, and the number of these bacteria positively correlated with each other.

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9남자 고등학생의 구강건강관련 자기효능감이 구강건강관련 삶의 질에 미치는 영향

저자 : 양귀예 ( Kui-ye Yang ) , 장지언 ( Ji-eon Jang )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 48-54 (7 pages)

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Objectives: To evaluate the association between oral health-related quality of life and oral healthrelated self-efficacy in high school students.
Methods: A questionnaire-based survey was conducted among high school students in Daegu, South Korea from November to December 2015, and the final data of 432 students were analyzed.
Results: Analysis of oral health-related self-efficacy in terms of general characteristics showed that both grade and income were significant factors (P<0.01). Furthermore, analysis of oral health-related quality of life in terms of general characteristics showed that academic achievement, father's educational level, and academic stress were significant factors (P<0.05). Correlation analyses of oral health-related quality of life with oral health-related self-efficacy revealed positive correlations with tooth brushing and ordinary oral health behavior. Regression analysis of oral health-related quality of life showed that father's educational level, oral health-related self-efficacy, academic stress, and academic achievement were influencing factors.
Conclusions: These results indicate that oral health-related self-efficacy may play a significant role in oral health-related quality of life.

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1012세 아동 우식경험영구치아수 예측을 위한 머신러닝 알고리즘의 적용

저자 : 양용훈 ( Yong-hoon Yang ) , 김지수 ( Ji-soo Kim ) , 정승화 ( Seung-hwa Jeong )

발행기관 : 대한예방치과·구강보건학회 간행물 : 대한구강보건학회지 44권 1호 발행 연도 : 2020 페이지 : pp. 55-63 (9 pages)

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Objectives: The decayed-missing-filled (DMFT) index is a representative oral health indicator. Prediction of DMFT index is an important basis for the development of public oral health care projects and strategies for caries prevention. In this study, we used data from the 2015 Korean children's oral health survey to predict DMFT index and caries risk groups using statistical techniques and four different machine-learning algorithms.
Methods: DMFT prediction models were constructed using multiple linear regression and four different machine-learning algorithms: decision tree regressor, decision tree classifier (DTC), random forest regressor, and random forest classifier (RFC). Thereafter, their accuracies were compared.
Results: For the DMFT predictive model, the prediction accuracy of multiple linear regression and RFC were 15.24% and 43.27%, respectively. The accuracy of DTC prediction was 2.84 times that of multiple linear regression. The important feature of the machine-learning model, which predicts DMFT index and the caries risk group, was the number of teeth with sealants.
Conclusions: Using data from the 2015 Korean children's oral health survey, which is considered big data in the field of oral health survey in Korea, this study confirmed that machine-learning models are more useful than statistical models for predicting DMFT index and caries risk in 12-yearold children. Therefore, it is expected that the machine-learning model can be used to predict the DMFT score.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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