미니 임플란트 직경에 따른 피로파절강도의 비교 연구

허유리,손미경,김희중,최한철,정재헌 大韓齒科補綴學會 2012 대한치과보철학회지 Vol.50 No.3

Purpose: This study was conducted to obtain difference in fracture strength according to the diameter of one-body O-ring-type of mini implant fixture, to determine the resistance of mini implant to masticatory pressure, and to examine whether overdenture using O-ring type mini implant is clinically usable to maxillary and mandibular edentulous patients. Materials and methods: For this study, 13 mm long one body O-ring-type mini implants of different diameters (2.0 mm, 2.5 mm and 3.0 mm) (Dentis, Daegu, Korea) were prepared, 5 for each diameter. The sample was placed at 30 from the horizontal surface on the universal testing machine, and off-axis loading was applied until permanent deformation occurred and the load was taken as maximum compressive strength. The mean value of the 5 samples was calculated, and the compressive strength of implant fixture was compared according to diameter. In addition, we prepared 3 samples for each diameter, and applied loading equal to 80%, 60% and 40% of the compressive strength until fracture occurred. Then, we measured the cycle number on fracture and analyzed fatigue fracture for each diameter. Additionally, we measured the cycle number on fracture that occurred when a load of 43 N, which is the average masticatory force of complete denture, was applied. The difference on compressive strength between each group was tested statistically using one-way ANOVA test. Results: Compressive strength according to the diameter of mini implant was 101.5 ± 14.6 N, 149 ± 6.1 N and 276.0 ± 13.4 N, respectively, for diameters 2.0 mm, 2.5 mm and 3.0 mm. In the results of fatigue fracture test at 43 N, fracture did not occur until 2×106 cycles at diameter 2.0 mm, and until 5×106 cycles at 2.5 mm and 3.0 mm. Conclusion: Compressive strength increased significantly with increasing diameter of mini implant. In the results of fatigue fracture test conducted under the average masticatory force of complete denture, fracture did not occur at any of the three diameters. All of the three diameters are usable for supporting overdenture in maxillary and mandibular edentulous patients, but considering that the highest masticatory force of complete denture is 157 N, caution should be used in case diameter 2.0 mm or 2.5 mm is used. 연구 목적: 일체형의 o-ring type 미니 임플란트 고정체의 직경에 따른 파절강도의 차이를 비교하고자 한다. 연구 재료 및 방법: 길이 13 mm의 one body o-ring type의 미니 임플란트(Dentis, Daegu, Korea)를 직경2.0, 2.5, 3.0 mm 각각 5개씩 준비하였다. Instron universal testing machine 에 수직면에서 30도 각도로 샘플을 위치시키고 off-axis loading을 가하여 영구변형이 일어난 하중 값을 파절강도로 하고 5개의 시편의 평균을 구하여 각 직경에 따른 임플란트의 고정체의 파절강도를 비교하였다. 또한, 각 직경마다 3개의 시편을 준비하고 동적하중 피로 시험기를 이용하여, 파절이 발생할 때까지 파절강도의 80%, 60%, 40%의 loading 을 가하여 파절되는 cycle수를 측정하여 각 직경의 피로 파절을 분석하였다. 추가적으로 총의치의 평균 저작력인 43 N의 하중을 가하여 파절되는 cycle 수를 측정하였다. 각 군간의 차이를 검증하기 위해서 일원분산분석(one-way ANOVA test)을 시행하였고, 통계처리는 SPSS ver.12 (SPSS Inc. Chicago, IL, USA) 을 이용하여 실시하였다. 결과: 직경 3.0 mm 의 미니 임플란트는 평균 276.0 ± 13.4 N의 압축력을 받았을 때 영구 변형이 일어났고 직경 2.5 mm 미니 임플란트가 149.0 ± 6.1 N, 2.0 mm 미니 임플란트가 101.5 ± 14.6 N일 때 영구 변형이 일어났다. 각 군간의 파절강도에는 유의한 차이가 있었다(P<.001). 총의치의 평균 저작력 하중에서 실시한 피로 파절 실험 결과, 세직경 모두 5×106 cycle까지 파절이 일어나지 않았다. 결론: 미니 임플란트의 정적 하중 하에서 최대 압축강도는 직경이 증가할수록 유의적으로 증가하였다. 최대 압축강도는 세 직경 모두 총의치의 평균 저작력 보다는 크나 최대 교합력보다는 직경 3.0 mm에서만 크게 나타났다. 총의치의 평균 저작력 하중에서 실시한 피로 파절 실험 결과, 세 직경 모두 파절이 일어나지 않았다.

주부의 인터넷 쇼핑의 유용성 인지가 활용도에 미치는 영향

박미석,이유리 숙명여자대학교 2000 生活科學硏究誌 Vol.15 No.-

This study analyzes the trend of the awareness of usefulness and usage frequency of Internet shopping and closely examines the influential factors of the trend. In addition, in this study the usage rate of Internet shopping are divided into that of search and purchase, so that the relationships of variables are easily derived through a process matrix. After all, the purpose of this methodology was to provide informatized housewives and household with fundamental data by finding a way to increase the awareness of usefulness and usage frequency of Internet shopping. The major findings are follows: (1) Those who are college-educated, married and employed, positive about information household, Internet-educated, highly capable of the Internet, and comfortable with an issue of an effluence of personal data showed high awareness of usefulness of Internet shopping. (2) Those who are young, college graduate or above, and employed showed the high usage rate of search. Those who are age 20 to 30, college graduate or above, employed, and at the early stage of family life style showed the high usage rate of purchase. In addition, those who are positive about information household, high in the tendency of innovation and the awareness of time constraints, exposed to the Internet education, high in the Internet capability, and low in a burden of the Internet bills and the effulence of personal data showed the high usage rate of search and purchase. (3) An awareness of time constraints and a concern for the effulence of personal data directly influence the usage rate of purchase and indirectly influence the usage awareness of internet shopping. And an attitude toward information household' and Internet capability directly influence the usage rate of search and purchase and indirectly influence the usage awareness of internet shopping. Therefore, according to the result of process matrix, an awareness of usefulness of Internet shopping, an attitude of information household, Internet capability are the variables that influence the usage rate of Internet shopping.

The Relationship Between Psychosocial Stress and Allergic Disease Among Children and Adolescents in Gwangyang Bay, Korea

Mee-Ri Lee,손부순,박유리,김혜미,문종윤,이용진,김용배 대한예방의학회 2012 예방의학회지 Vol.45 No.6

Objectives: Stress is considered a causal factor in many diseases, allergic disease being one of them. The prevalence of allergic disease is increasing in Korea, but the relationship between allergic symptoms and stress is not empirically well known. We aimed to evaluate the relationship between allergy-related symptoms and stress in children and adolescents. Methods: We investigated 698 children and adolescents living in Gwangyang Bay, Korea, using a multi-stage cluster sampling method. Using the International Study of Asthma and Allergies in Childhood and the Psychosocial Well-being Index, these subjects were surveyed on allergy-related symptoms and psychosocial stressors in their lives, respectively. We used a multivariate logistic analysis for odds ratios for the complaint rate of allergic symptoms, after adjusting for age, gender, household income, body mass index, and residence. Results: After adjustments, lifetime rhinitis (odds ratio [OR], 1.024), rhinoconjunctivitis (OR, 1.090), diagnosis of itchy eczema (OR, 1.040), treatment of itchy eczema (OR, 1.049), 12-month allergic conjunctivitis (OR, 1.026), diagnosis of allergic conjunctivitis (OR, 1.031), and treatment of allergic conjunctivitis (OR, 1.034) were found to be significantly associated with stress. Conclusions: Our results support the notion that there is a relationship between stress and allergic symptoms in children and adolescents. Further research into any causal relationship between stress and allergies, as well as preventative public health plans for decreasing stress in children and adolescents are needed.

Does diurnal temperature range influence elderly depression?

Mee-Ri Lee(이미리),Jin Hee Kim(김진희),Yoon-Hyeong Choi(최윤형),Sanghyuk Bae(배상혁),Yun-Chul Hong(홍윤철) 환경독성보건학회 2013 한국독성학회 심포지움 및 학술발표회 Vol.2013 No.10

The Relationship Between Psychosocial Stress and Allergic Disease Among Children and Adolescents in Gwangyang Bay, Korea

Lee, Mee-Ri,Son, Bu-Soon,Park, Yoo-Ri,Kim, Hye-Mi,Moon, Jong-Youn,Lee, Yong-Jin,Kim, Yong-Bae The Korean Society for Preventive Medicine 2012 Journal of Preventive Medicine and Public Health Vol.45 No.6

Objectives: Stress is considered a causal factor in many diseases, allergic disease being one of them. The prevalence of allergic disease is increasing in Korea, but the relationship between allergic symptoms and stress is not empirically well known. We aimed to evaluate the relationship between allergy-related symptoms and stress in children and adolescents. Methods: We investigated 698 children and adolescents living in Gwangyang Bay, Korea, using a multi-stage cluster sampling method. Using the International Study of Asthma and Allergies in Childhood and the Psychosocial Well-being Index, these subjects were surveyed on allergy-related symptoms and psychosocial stressors in their lives, respectively. We used a multivariate logistic analysis for odds ratios for the complaint rate of allergic symptoms, after adjusting for age, gender, household income, body mass index, and residence. Results: After adjustments, lifetime rhinitis (odds ratio [OR], 1.024), rhinoconjunctivitis (OR, 1.090), diagnosis of itchy eczema (OR, 1.040), treatment of itchy eczema (OR, 1.049), 12-month allergic conjunctivitis (OR, 1.026), diagnosis of allergic conjunctivitis (OR, 1.031), and treatment of allergic conjunctivitis (OR, 1.034) were found to be significantly associated with stress. Conclusions: Our results support the notion that there is a relationship between stress and allergic symptoms in children and adolescents. Further research into any causal relationship between stress and allergies, as well as preventative public health plans for decreasing stress in children and adolescents are needed.

노인에서 Bisphenol A 노출과 비만과의 관련성

이미리(Mee-ri Lee),김진희(Jin Hee Kim),최윤형(Yoon-Hyeong Choi),배상혁(Sanghyuk Bae),윤홍철(Yun-Chul Hong) 환경독성보건학회 2013 한국독성학회 심포지움 및 학술발표회 Vol.2013 No.5

Causal association of body mass index with hypertension using a Mendelian randomization design

Lee, Mee-Ri,Lim, Youn-Hee,Hong, Yun-Chul,Kuwabara., Masanari Williams & Wilkins Co 2018 Medicine Vol.97 No.30

<▼1><P>Supplemental Digital Content is available in the text</P></▼1><▼2><P><B>Abstract</B></P><P>Observational studies have shown that obesity is a major risk factor for hypertension, but unmeasured confounding factors may exist. We used Mendelian randomization (MR) to assess the causal effect of obesity on hypertension.</P><P>The MR analysis was performed in a well-defined community cohort study of 8832 middle-aged (40–69 years) adults in Korea enrolled from 2001 to 2013. We used baseline hypertension and newly diagnosed hypertension during the 10-year follow-up period as the outcome variable. Genetic risk score associated with body mass index (BMI GRS) was used as the instrumental variable (IV) to measure the causal relationship between obesity and hypertension. The IV estimate of causal odds ratio (OR) was derived using the Wald ratio estimator and then exponentiation to express the result as an OR.</P><P>In the multivariable model adjusting for age, sex, study area, education, smoking, and current alcohol consumption, each 1 kg/m<SUP>2</SUP> increase in BMI was associated with a 19% (OR: 1.19, 95% confidence interval [CI]: 1.17–1.21) increase in hypertension risk. We selected 6 single-nucleotide polymorphisms (<I>P</I> < 1.0 × 10<SUP>−5</SUP>) associated with BMI by genome-wide screening using linear regression and created 6 types of GRS. We demonstrated that each standard-deviation increase in BMI GRS was associated with a 5% to 6% (OR: 1.05–1.06) increased risk of hypertension (all <I>P</I> < .05). Using BMI GRS as the IV, we found a causal relationship between BMI and hypertension (OR: 1.13–1.26, all <I>P</I> < .05 except weighted GRS [n = 6]).</P><P>Using Mendelian randomization, we found that obesity is causally associated with hypertension. This information will have important public health implications, supporting evidence that obesity-reduction programs will reduce the incidence of hypertension.</P></▼2>

부모진로지지와 대학생의 성격요인이 진로선택몰입에 미치는 영향: 진로결정효능감의 매개효과

전미리(Mee-Ri Jeon) 한국직업교육학회 2020 職業 敎育 硏究 Vol.39 No.4

The purpose of this study is to investigate the relationship between factors influencing college students commitment to career choice, according to the assumptions of the Social Cognitive Career Self-Management model. The environmental and contextual variables set in this study are career-related parent support, and personality factors are Extroversion, Conscientiousness, and Emotional Stability. Correlation analysis and Structural Equation Model analysis were conducted to analyze the data collected through a questionnaire survey for 448 students (male: 203, female: 245) who are attending universities in the metropolitan area and Chungcheong area. The results are as follow. First, career-related parent support affects commitment to career choice through college students’ career decisional self-efficacy indirectly. Second, personality factors that directly and indirectly influence commitment to career choice through the career decisional self-efficacy of Korean college students were found to be Conscientiousness and Emotional Stability. Extrovert personality factors did not show a statistically significant relationship for career decisional self-efficacy and commitment to career choice. It is important to improve career decisional self-efficacy in career counseling to promote college students commitment to career choice and it is necessary to take into consideration Emotional Stability, Conscientiousness, and career-related parent support. 본 연구의 목적은 대학생의 진로선택몰입을 촉진하기 위하여 영향을 미치는 요인들 간의 관계를 규명하는 것이다. 사회인지 진로자기관리모형의 가정에 따라 환경 맥락적 지지, 성격요인, 진로결정효능감이 진로선택몰입에 영향을 미칠것으로 보았다. 본 연구에서 설정한 환경 맥락적 변인은 부모의 진로지지이며, 대학생의 성격요인은 외향성, 성실성, 정서 안정성이다. 부모진로지지와 대학생의 성격요인은 진로결정효능감을 매개로 진로결정몰입에 직․간접적으로 영향을 미칠 것으로 가정하였다. 단, 자율성과 심리적 독립이 중요한 대학생들의 특성상 부모진로지지는 대학생의 진로결정효능감을 매개로 간접적인 영향을 미칠 가능성을 고려하여 이를 경쟁모형으로 설정하였다. 수도권과 충청권의 대학에 재학 중인 학생 448명(남: 203명, 여: 245명)을 대상으로 설문을 통해 수집한 자료를 분석하기 위하여 상관 분석 및 구조 방정식 모형 분석을 실시하였다. 그 결과, 첫째, 부모의 진로지지는 대학생의 진로결정효능감을 매개로 진로선택몰입에 영향을 미치는 완전 매개 모형이 적합한 것으로 나타나 본 연구의 경쟁모형이 채택되었다. 둘째, 우리나라 대학생의 진로결정효능감을 매개로 진로선택몰입에 직․간접적으로 영향을 미치는 성격요인은 성실성, 정서 안정성으로 나타났다. 외향성 성격요인은 진로결정효능감과 진로선택몰입에 통계적으로 유의한 관계가 나타나지 않았다. 대학생의 진로선택몰입 촉진을 위한 진로 상담에서 진로결정효능감을 향상시키는 것이 중요하며 정서 안정성과 성실성, 부모진로지지를 고려할 필요가 있다.

Association of bisphenol A exposure with overweight in the elderly: a panel study.

Lee, Mee-Ri,Kim, Jin Hee,Choi, Yoon-Hyeong,Bae, Sanghyuk,Park, Choonghee,Hong, Yun-Chul Ecomed 2015 Environmental science and pollution research inter Vol.22 No.12

<P>Bisphenol A (BPA) is an ubiquitous chemical, which is an endocrine disruptor. Recent epidemiological studies have suggested a relationship between BPA exposure and body weight. However, most of these studies were cross-sectional and not on elderly people. We conducted a panel study with repeated measurements to evaluate the relationship between BPA and overweight in elderly people. A total of 560 elderly participants aged ???60 years were recruited in Seoul from 2008 to 2010. Urinary BPA levels and body mass index (BMI, kg/m(2)) were measured at every visit. We defined a BMI ???25 as overweight and examined the relations between urinary BPA and BMI or overweight. Repeated measures analysis was performed after adjusting for age, sex, low-density lipoprotein cholesterol levels, alcohol consumption, regular exercise, total calorie intake, fatty acid intake, urinary cotinine levels, and the status of diabetes mellitus. The geometric mean of BPA was 0.67 관g/g creatinine. The odds ratio (OR) of overweight was 1.17 (95 % confidence interval [CI] 1.04-1.32) per interquartile range increase of log-transformed BPA. When stratified based on sex, we observed a significant association in women (OR 1.25; 95 % CI 1.09-1.45) but not in men (OR 0.97; 95 % CI 0.77-1.22). The ORs of overweight increased with quartiles of BPA in women (quartile 2 vs 1: OR 1.54; 95 % CI 1.02-2.32, 3 vs 1: OR 1.70; 95 % CI 1.10-2.62, and 4 vs 1: OR 1.81; 95 % CI 1.13-2.92). Our results suggest that urinary BPA levels are significantly associated with overweight in elderly women but not elderly men.</P>

대학생의 진로결정수준에 대한 성격 5요인과 인지 · 행동적 변인의 영향

전미리(Mee-Ri Jeon),김봉환(Bong-Whan Kim) 한국진로교육학회 2015 진로교육연구 Vol.28 No.4

본 연구의 목적은 사회인지이론의 진로자기관리모형에서 제안된 성격 5요인과 인지 · 행동적 변인의 진로결정에 대한 영향력을 검증하는 것이다. 이를 위해 수도권 4년제 대학 3개교에 재학 중인 학생 470명(남학생 153명, 여학생 313명)이 설문에 참여하였다. 진로결정수준에 대한 상대적 영향력을 확인하기 위하여, 맥락적 변인으로 외적 장벽, 성격 변인으로 성격 5요인, 인지적 변인으로 진로결정 효능감과 결과기대 및 목표, 행동적 변인으로 진로준비행동을 설정하여 상관분석과 위계적 회귀분석을 실시하였다. 그 결과, 모든 예측 변인은 진로결정수준과 통계적으로 유의한 상관이 있었으며, 이 가운데, 외적 장벽만이 부적인 상관을 보였다. 외적장벽, 성격 5요인, 인지적 변인, 행동적 변인의 순서로 투입하여 위계적 회귀분석을 실시한 결과, 진로결정수준에 대한 각 위계의 설명력의 증가량은 모두 통계적으로 유의하여 인지 · 행동적 변인의 중요성이 확인되었다. 진로결정수준에 대한 영향력이 가장 큰 변인은 인지적 변인인 진로결정 효능감으로 확인되었으며, 행동적 변인인 진로준비행동과 외적 장벽, 성격 5요인의 개방성, 정서안정성의 순으로 나타났다. The purpose of this study was to examine how the Big 5 Personality and cognitive behavioral variables suggested by Social Cognitive Model of Career Self-Management affects on career decision level of college students. In doing so, 470 four-year-college students (male 153, female 313) in metropolitan areas were recruited. Reliability analysis and hierarchical multiple regression analysis were conducted to test the relative effect on career decision level from predictor variables of External Barriers in Korean Career Indecision Inventory, International Personality Item Pool, The Career Decision-Making Self-Efficacy Scale Short Form, Career Decision Making Outcome Expectancies, Exploratory Intentions, Career Preparation Behavior Scale, Career Decision Scale. Except External Barrier(which showed a significant negative correlation), all other predictor variables showed a significant positive correlation with career decision level. The Decision-Making Self-Efficacy showed the highest effect, and Career Preparation Behavior, External Barrier, personality (Openness and Emotional Stability) followed after. Implications and guidance for counselors as well as recommendations for future research directions are discussed.