• 한국학교ㆍ지역보건교육학회지
• /
• 제17권1호
• /
• pp.59-73
• /
• 2016

Objectives: The working environment affects employees' physical and mental aspects, and has a deep associations with depression. The purposes of this study are to investigate how hazardous environment working experience impacts on depression, to provide rationale and practical implications for reducing depression and drinking. Methods: This study targeted 215 dental hygiene students from 3 universities located in Gyeonggi-do from November 30 to December 4, 2015. We analyzed the data with frequency analysis, descriptive statistics, t-test. One-way ANOVA, Pearson correlation coefficient, Regression analysis by using SPSS. Results: This study showed that experience working in hazardous environments increased depression and alcohol drinking, on the other hand alcohol drinking reduced depression. In addition, experience working in hazardous environments effected on depression indirectly through mediating of drinking, subjective health had not role of Moderating Effects between experience working in hazardous environments and depression. Conclusions: In order to reduce workers' depression and alcohol, the improvements of harmful environment are needed. For this governments and local governments should efforts to support enhancing workplace environment, to develop model of standard work environment, and to change employers' awareness on the harmful environment.

• 한국치위생학회지
• /
• 제19권6호
• /
• pp.1099-1107
• /
• 2019

Objectives: The purpose of this study was to investigate the changes in pH in the oral cavity using the probiotic intake method. Methods: A total of 109 participants were enrolled and randomly assigned to three groups. Participants in the control group did not ingest powdered probiotics, those in experimental group 1 ingested powdered probiotics by dissolving them on the tongue, and those in experimental group 2 dissolved powdered probiotics on the tongue and rinsed with water. pH values were measured 5 times in all. The significance of each group was examined by the Kruskal-Wallis test. The trend over time was expressed as a graph with groupwise means and confidence intervals, considering repeated measurement data. Results: A significant difference was found between the control group and experimental group 1 at two time-points, i.e., immediately after intake and 3 min after ingestion. As a result of the time trend, the pH value of experimental group 2 was smaller than that of experimental group 1, compared to the control group. Conclusions: Studies have shown that taking probiotics with water may help reduce changes in oral pH. Probiotics should be aware of live bacteria and provide consumers with more detailed information on proper dosage and precautions.

• 한국융합학회논문지
• /
• 제11권11호
• /
• pp.95-101
• /
• 2020

본 연구는 비판적 사고성향, 문제해결능력, 대학생활적응의 융합적 관계를 규명하고, 대학생활적응에 미치는 영향을 파악하고자 하였다. 설문 조사는 충북과 전북에 소재한 3년제 치기공과에 재학 중인 2,3학년 학생 172명을 대상으로 시행하였다. 분석결과 연구대상자의 비판적 사고성향은 3.50, 문제해결능력은 3.55, 대학생활적응은 3.27으로 나타났다. 대학생활적응에 가장 큰 영향을 미치는 요인은 비판적 사고성향이었으며, 전공만족도, 대학만족도 순이었다. 치기공과 학생들의 대학생활에 적응 수준을 높이기 위해서 비판적 사고성향을 증진시키고, 전공과 대학만족도를 높일 수 있는 교육환경 개선과 다양한 교육프로그램 개발이 필요할 것이다.

• 한국치위생학회지
• /
• 제13권6호
• /
• pp.1005-1014
• /
• 2013

Objectives : The purpose of the study is to obtain the basic data for an industrial oral health project enhancing the quality of life and oral health. Methods : Questionnaire consisted of 17 questions including 7 questions of general characteristics, 5 questions of oral health awareness, and 5 questions of the behavior of oral health. A self-reported questionnaire was carried out from September 1 to September 28, 2012, The subjects were 400 male and female sanitation workers in private corporations in Jeonju. A total of 354 questionnaires were analyzed using SPSS windows ver. 12.0 (SPSS Inc. Korea). Results : The majority of the subjects were male in 50's. Temporary contract workers are older aged and 2 to 5 years of career workers were the majority of the cleaners. Average monthly income was less than 2 million Korean Won. Those who had a higher academic background and permanent position tended to have oral health knowledge (p<0.05). Female workers had healthier subjective oral health status than male workers. Those who were in older age, single, temporary position, and 2 to 5 years of career tended to have healthier subjective oral health status (p<0.05). Those who were in older age, married, and long period of employment were worrying about their health (p<0.05). The subjective oral health knowledge was high in 49.7% of the workers because they were not able to brush teeth during work hours. They were able to brush their teeth only after dinner. It was low in female and older aged workers (p<0.05). The brushing method included a combination of top to bottom and from the side to side. Conclusions : This study showed the influencing factor of oral health in street workers. Work environment, education, age, monthly income, and types of employment were the important factors to oral health care. It is necessary to provide the right oral health care program for the workers in the near future.

• 한국산학기술학회논문지
• /
• 제18권10호
• /
• pp.513-523
• /
• 2017

구강보건 관련 취약계층에 해당하는 거주 장애인의 개인위생과 구강위생 업무수행의 어려움의 정도 및 구강보건 수행환경을 알아보고자, 경기도 장애복지 시설 생활재활교사에게 설문조사를 실시하여 총 111부를 기술통계와 상관분석으로 분석한 결과는 다음과 같다. 첫째, 거주 장애인의 개인위생은 자발적인 칫솔질, 칫솔질 중요도 인식, 자신의 칫솔 찾기와는 정적 상관을 보였다. 둘째 거주 장애인의 구강위생 수행과 관련한 어려움의 정도는 자신의 칫솔 찾기, 치과 의료기관의 구강검사 여부에서 보통이상을 수행할 수 있는 것으로 나타났고, 자발적 수행정도에서는 잇몸 맛사지, 설탕 함유 식품 자제순으로 잘하지 못하는 것으로 나타났다. 셋째, 자발적인 칫솔질을 잘 수행할수록 올바른 칫솔질 방법 등에 대한 교육을 적절하게 받고 있는 것으로 나타났으며, 3분 이상 칫솔질과 회전법 칫솔질을 스스로 잘 수행 할수록 구강관리용품을 적절하게 지원받고 있는 것으로 나타났다. 또한 혀 닦기를 잘 수행할수록 담당 장애인의 수는 적절한 것으로 나타났다. 따라서 거주 장애인이 개인위생을 실천하기 어려운 경우, 구강위생 실천에 도움을 줄 수 있는 생활재활교사 및 장애인에게 지속적인 치위생 중재 프로그램이 필요할 것으로 보인다.

• The Korean Journal of Physiology and Pharmacology
• /
• 제20권1호
• /
• pp.41-51
• /
• 2016

Adult hippocampal dentate granule neurons are generated from neural stem cells (NSCs) in the mammalian brain, and the fate specification of adult NSCs is precisely controlled by the local niches and environment, such as the subventricular zone (SVZ), dentate gyrus (DG), and Toll-like receptors (TLRs). Epigallocatechin-3-gallate (EGCG) is the main polyphenolic flavonoid in green tea that has neuroprotective activities, but there is no clear understanding of the role of EGCG in adult neurogenesis in the DG after neuroinflammation. Here, we investigate the effect and the mechanism of EGCG on adult neurogenesis impaired by lipopolysaccharides (LPS). LPS-induced neuroinflammation inhibited adult neurogenesis by suppressing the proliferation and differentiation of neural stem cells in the DG, which was indicated by the decreased number of Bromodeoxyuridine (BrdU)-, Doublecortin (DCX)- and Neuronal Nuclei (NeuN)-positive cells. In addition, microglia were recruited with activating TLR4-NF-${\kappa}B$ signaling in the adult hippocampus by LPS injection. Treating LPS-injured mice with EGCG restored the proliferation and differentiation of NSCs in the DG, which were decreased by LPS, and EGCG treatment also ameliorated the apoptosis of NSCs. Moreover, pro-inflammatory cytokine production induced by LPS was attenuated by EGCG treatment through modulating the TLR4-NF-${\kappa}B$ pathway. These results illustrate that EGCG has a beneficial effect on impaired adult neurogenesis caused by LPS-induced neuroinflammation, and it may be applicable as a therapeutic agent against neurodegenerative disorders caused by inflammation.

• 한국치위생학회지
• /
• 제10권6호
• /
• pp.955-963
• /
• 2010

Objectives : The purpose of this study was to examine effect of the application of different types of coffee on teeth stain during home bleaching. Methods : Twenty five premolars that were extracted within the past month and healthy without any signs of dental caries or restorations were collected and divided into five groups. The teeth of a control group were bleached everyday for two weeks, and the teeth of four experimental groups were bleached everyday for two weeks and then deposited respectively in four different types of coffee solution: brewed coffee, black coffee, coffee with sugar, and coffee with sugar and cream. Afterwards, the color of the teeth of the four experimental groups was checked by a shade pilot. Results : As a result, there were significant differences in the change of lightness and color according to the blending type with the lapse of time during home bleaching. Concerning changes in lightness and hue, there were the largest differences in the control group and the experimental group deposited in coffee with sugar and cream, followed by coffee with sugar, black coffee and brewed coffee. When the extent of change in lightness and hue was investigated after home bleaching, the experimental group deposited in coffee with sugar and cream was stained the least, and the experimental group deposited in brewed coffee was stained the most. Conclusions : In conclusion, the intake of coffee that is the cause of stain should be reduced during bleaching, and in case of having a cup of coffee, it's advisable to have coffee with cream.

• 대한치과기공학회지
• /
• 제37권3호
• /
• pp.169-178
• /
• 2015

Purpose: This study was to investigate usage satisfaction of multi type handpiece with equipped air-jet function Methods: The subjects of this study through the survey was conducted for fifty-nine dental technicians in Daegu and Gyeongsangbukdo from the May 7 to 19, after the June 23 to July 4 2014. The survey was about the function and quality through user testing environment by cutting zirconia specimens using appliance for zirconia. The collected date was analyzed by the statistical program SPSS Win Ver 19.0 for the satisfaction of handpiece and control system. To test for significance on each item, p<0.05 had been decided a standard. General characteristics and relationship between the handpiece and control system was performed correlation analysis. Results: The results of this study is as follows. 35 dental technicians had 1~2 years career in zirconia part as the highest 59.3%, 95% of subjects expected that the prospects for the zirconia material have bright prospects. The satisfaction of multi type handpiece and control system design and function showed a significant difference. Subjects satisfied with the design and function of the multi type showed negative correlation with those of Standard. The satisfaction of multi type handpiece showed 3.37 points of air jet, 3.05 points of noise level, 2.69 points of water flow rate, and 1.98 points of cruise function. Sample differences in all parameters showed a statistically higher difference. Conclusion: High-speed cutting mechanism of multi-type is recommended working with zirconia materials and the multi-type unit combined handpiece motor, air-turbine and air-gun will be expected the increase of user due to the high satisfaction of air jet.

• Osong Public Health and Research Perspectives
• /
• 제9권6호
• /
• pp.340-347
• /
• 2018

Objectives: The aim of this research was to determine intra-oral factors that affect halitosis in young women. Methods: This study was performed between March 2014 to May 2014, and included 35 women in their 20s with good oral health. Correlation and logistic regression analyses were performed to investigate the change in halitosis immediately, and 1 hour after scaling. Results: In both oral gas (OG) and extraoral gas (EG) groups, halitosis was reduced after scaling compared to before scaling. The logistic regression analysis of oral state factors in OG showed that as oral fluid [odds ratio (OR) = 0.792, p = 0.045] and dental plaque (OR = 0.940, p = 0.016) decreased by 1 unit, the OR in the OG group decreased (> 50). In addition, as glucose levels in the oral cavity (OR = 1.245, p = 0.075) and tongue coating index (OR = 2.912, p = 0.064) increased by 1 unit, the OR in the OG group increased (> 50). Furthermore, in the EG group, as oral fluid (OR = 0.66, p = 0.01) and dental plaque (OR = 0.95, p = 0.04) decreased, the OR in the EG group decreased (> 50) significantly. Conclusion: To control halitosis, it is necessary to increase oral fluid and decrease the amount of tongue plaque. Furthermore, maintaining a healthy oral environment, aided by regular scaling and removal of dental plaque, may significantly control halitosis.

• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제42권
• /
• pp.24.1-24.7
• /
• 2020

Background: In daily practice, three-dimensional patient-specific jawbone models (3D models) are a useful tool in surgical planning and simulation, resident training, patient education, and communication between the physicians in charge. The progressive improvements of the hardware and software have made it easy to obtain 3D models. Recently, in the field of oral and maxillofacial surgery, there are many reports on the benefits of 3D models. We introduced a desktop 3D printer in our department, and after a prolonged struggle, we successfully constructed an environment for the "in-house" fabrication of the previously outsourced 3D models that were initially outsourced. Through various efforts, it is now possible to supply inexpensive 3D models stably, and thus ensure safety and precision in surgeries. We report the cases in which inexpensive 3D models were used for orthodontic surgical simulation and discuss the surgical outcomes. Review: We explained the specific CT scanning considerations for 3D printing, 3D printing failures, and how to deal with them. We also used 3D models fabricated in our system to determine the contribution to the surgery. Based on the surgical outcomes of the two operators, we compared the operating time and the amount of bleeding for 25 patients who underwent surgery using a 3D model in preoperative simulations and 20 patients without using a 3D model. There was a statistically significant difference in the operating time between the two groups. Conclusions: In this article, we present, with surgical examples, our in-house practice of 3D simulation at low costs, the reality of 3D model fabrication, problems to be resolved, and some future prospects.