죽염이 초기인공우식법랑질의 재광화에 미치는 영향

오한나 ( Han Na Oh ),홍석진 ( Suk Jin Hong ),이혜진 ( Hye Jin Lee ),최충호 ( Choong Ho Choi ) 한국치위생학회(구 한국치위생교육학회) 2012 한국치위생학회지 Vol.12 No.2

Objectives : The aim of this investigation was to evaluate the remineralization effect of Bamboo salt and NaF+Bamboo salt solutions on bovine enamel formed incipient artificial enamel caries by microcomputed tomography (micro CT). Methods : Experimental solutions were distilled water(negative control), 2% sodium fluoride solution (2% NaF group), 3% bamboo salt solution (3% BS group) and the solution mixed 2% sodium fluoride solution and 3% bamboo salt solution (2% NaF+3% BS group). Specimens were prepared from extracted bovine teeth and divided into 4 groups of 10 specimens each by randomized blocks according to density. Then the specimens surface were divided equally into three parts to observe sound enamel area, incipient enamel carious area and remineralized enamel area. Only one-third of specimen surface was coated with nail varnish and these were exposed to a lactate carbopol buffer system for 72 hours. Then one-half of the demineralized enamel area was coated with nail varnish. The specimens were carried out under pH cycling model for 14 days as follows; samples were immersed in each experimental solution for 2 mins 3 times per day, demineralized for 4 hours and in mixed saliva for the remaining hours. After pH cycling, density was measured using micro CT. Results : All experimental groups showed remineralization effects except for negative control group(p<0.05). The differences of density after experimental solution treatment were statistically significant difference among 4 groups (p<0.01). The density difference values of groups were 0.04±0.01 in negative control group, 0.19±0.01 in 2% NaF group, 0.14±0.01 in 3% BS group, and 0.21±0.01 in 2% NaF+3% BS group. Conclusions : The bamboo salt solution showed remineralization effects on incipient artificial enamel caries and the solution mixed sodium fluoride solution and bamboo salt solution showed more remineralization effects than the bamboo salt solution. Thus, it is suggested that bamboo salt can be used as remineralization agent in incipient enamel caries lesion.

노인의 삶의 질 향상을 위한 주관적 구강건강에 영향을 미치는 요인

오한나 ( Han Na Oh ),김지현 ( Ji Hyun Kim ) 한국치위생학회 2016 한국치위생학회지 Vol.16 No.3

Objectives: The purpose of the study was to investigate the influencing factors of the perceived oral health for improvement of quality of life in Korean elderly. Methods: The subjects were 1,289 elderly over 65 years old from the sixth National Health and Nutrition Examination Survey 2013. The dependent variable was subjective oral health status. The independent variable was sociodemographic characteristics. Results: The perceived oral health of the unemployed elderly and those having chewing problems were 1.65-fold(95% CI=1.12=2.44) and 3.45-fold(95% CI=2.37-5.02), respectively than employed and chewable elderly. The perceived oral health of the former was 2.49-fold worse(95% CI=1.73-3.60) than the latter. Conclusions: The influencing factors of perceived oral health status included occupation, perceived health status and chewing problems. To improve the oral health-related quality of life in the elderly, continuous education and hands-on programs should be provided for the elderly in the long term care.

유아 도형 창의성 검사에서 나타난 유아의 반응 탐색: 독창성 반응과 시각적 이미지 표현을 중심으로

오한나(Oh, Han-Na),이영애(Lee, Young-Ae) 한국열린유아교육학회 2021 열린유아교육연구 Vol.26 No.5

본 연구의 목적은 유아 도형 창의성 검사를 바탕으로 유아 도형 창의성 검사에서 나타난 유아의 반응을 탐색하고자 하는 데 있다. 이를 위해 S시와 K도에 소재한 9개의 유치원과 어린이집 기관의 만 5세반 유아를 대상으로 실시한 유아 도형 창의성 검사 과정에서 나타난 유아 151명의 반응을 분석하였다. 연구 결과, 유아 도형 창의성 검사에서 유아의 독창성 0점 반응은 ‘모자류’가 가장 많이 나타나고 있었으며 그 다음으로는 ‘얼굴을 나타내는 사람류’, ‘잠수함, 우주선, 로켓, 비행기류’, ‘도깨비류’ 순으로 많이 나타나고 있었다. 독창성 0점 반응 이외의 독창적인 반응에는 ‘바다동물’이 가장 많이 나타나고 있었으며, 그 다음으로 ‘자연물’, ‘생활용품’, ‘장소 및 건물’ 등도 많이 나타나고 있었다. 또한 본 연구에서는 유아 도형 창의성 검사에서 나타난 유아의 창의성 요인별 반응에 대해서 유창성, 독창성, 개방성, 민감성 요인으로 나누어 관련 사례와 함께 분석하여 제시하였다. 이러한 결과를 바탕으로 본 연구는 추후 유아 창의성 검사 도구 개발을 위한 방향 및 유아 창의성 교육의 실천 방안을 제시하였다. The purpose of this study is to examine children’s creative responses in the Korean Figural Creativity Test for Young Children(K-FCTYC). The participants were 151 5-year-old children from 9 kindergartens and daycare centers in S city and K providence. As a result, the most frequent responses of originality for ‘0’ score was ‘hat’ type figure, followed by ‘faces that represent people’, ‘submarines’, ‘spaceships’, ‘rockets’, ‘airplanes’, and ‘goblin’. Moreover, ‘sea animals’ were the most common responses besides originality 0 points, followed by ‘natural objects’, ‘household goods’, and ‘places or buildings’. Furthermore, the responses of children’s creativity factors shown in the children’s creativity test on figures were divided into fluency, originality, openness, and sensitivity categories, and they were analyzed and presented together with related cases. Based on these results, this study suggested a direction for the development of a tool for testing children’s creativity and a way to practice creativity education for children in the future.

창작 그림책에 나타난 동물 등장인물의 특성 및 인간과의 관계 분석 연구

오한나(Oh, Han-Na) 한국어린이문학교육학회 2021 어린이문학교육연구 Vol.22 No.3

본 연구는 창작 그림책에 나타난 동물 등장인물의 특성 및 인간과의 관계를 분석하고자 하였다. 이를 위해 ‘동물’ 키워드로 검색된 98권의 그림책을 선정하여 분석하였다. 수집된 자료의 내용분석후 빈도와 백분율로 결과를 처리하였다. 첫째, 동물의 특성을 살펴본 결과, 먼저 동물은 의인화하여 표현한 경우가 의인화하지 않은 경우보다 더 많이 나타나고 있었다. 또한 동물의 서식지에 대해 살펴본 결과, 동물이 주로 머무는 장소는 인공환경 중 집이 가장 많이 나타났으며 동물이 머무는 장소의 변화는 인공 환경에서 인공 환경으로의 이동이 가장 많이 나타났다. 둘째, 동물과 인간의 관계에서는 여아가 가장 많이 나타났고 상호존중적 관계의 형태가 가장 많이 나타났다. 또한 동물과 인간의 관계에서 동물의 역할은 인간과 함께 놀이하는 존재로 가장 많이 나타난 것을 알 수 있었다. 이를 통해 본 연구에서는 동물 등장인물의 특성과 동물과 인간의 관계를 분석함으로써 동물과 인간이 함께 살아가는 시대적 방향에 대한 의미 있는 모색을 하였다. This study analyzed the characteristics of animal characters appearing in creative picturebooks. For this purpose, 98 picture books with the keyword ‘animal’ were selected, and the characteristics of animals and the relationship between the humans and animals were analyzed in the picturebooks. After analyzing the contents of the collected data, the results were processed in terms of frequency and percentage. First, as a result of examining the characteristics of animals, the cases where animals were anthropomorphized were more frequently expressed than cases where animals were not anthropomorphized. In addition, as a result of examining the habitats of animals, first, the place where animals mainly stayed was the house of human society. Second, in terms of the relationship between animals and humans, girls showed the most relationships, and the mutual respect relationships were seen the most. In addition, it was found that the role of animals in the relationship between animals and humans was most often shown by beings playing with humans. Through this, this study proposed a meaningful search for the direction of the times in which animals and humans live together by analyzing the characteristics of animal characters and the relationship between animals and humans in picture books.

유아의 의도적 통제와 또래 놀이행동 간의 관계에서 교사 - 유아 관계의 매개효과

오한나 ( Han Na Oh ),변혜원 ( Byun Hye Weon ),정미라 ( Chung Mi Ra ) 열린부모교육학회 2018 열린부모교육연구 Vol.10 No.1

본 연구는 유아의 의도적 통제와 또래 놀이행동 간의 관계에서 교사-유아 관계의 매개 효과를 알아보는데 목적이 있다. 연구대상은 경기 지역의 공·사립유치원에 재원 중인 만 3-5세 유아 405명이었다. 자료 분석은 상관분석과 위계적 중다회귀분석을 실시하였으며 매개효과분석을 위하여 Sobel test를 실시하였다. 연구 결과, 먼저, 유아의 의도적 통제, 교사-유아 관계, 또래 놀이행동 간에는 유의미한 정적인 상관이 나타났으며, 각 하위요인 간에도 유의미한 정적인 상관이 나타났다. 또한, 유아의 의도적 통제, 교사-유아 관계는 또래 놀이행동에 유의한 효과가 있는 것으로 나타났다. 특히 또래 놀이행동에 유아의 의도적 통제 하위요소 중 억제조절, 미소와 웃음에서 유의한 효과가 있는 것으로 나타났으며, 교사-유아 관계 하위요소 중 갈등과 의존성에서 유의한 효과가 있는 것으로 나타났다. 마지막으로 유아의 의도적 통제와 또래 놀이행동 간의 관계에서 교사-유아 관계의 매개효과를 살핀 결과, 부분 매개효과가 나타났다. 이러한 결과를 바탕으로 본 연구에서는 유아의 의도적 통제와 또래 놀이행동을 발달시킬 수 있는 방안을 논의하였다. The purpose of this study is to investigate the mediating effect of teacher-child relationship on the relationship between child’s effortful control and peer play behavior. The subjects of the study were 405 children aged 3-5 years in public and private kindergartens in Gyeonggi area. Data were analyzed by correlation analysis and hierarchical multiple regression analysis. Sobel test was used for mediation analysis. The results were as follows. First, there was a significant positive correlation between effortful control of children, teacher-child relationship, and peer play behavior, and there was a significant positive correlation between each sub-factor. In addition, effortful control of the child and teacher-child relationship showed significant effects on peer play behavior. Especially, it exerted a significant effect on inhibitory control, smiling and laughter of children’s effortful control sub-factors in peer play behavior, and also on conflict and dependency among teachers-child relationship sub-factors. Finally, the mediating effect of the teacher-child relationship on the relationship between the child’s effortful control and peer play behavior was found to be partially mediated. Based on these results, this study discussed ways to develop child’s effortful control and peer play behavior.

3개월 영아 어머니가 지각하는 배우자의 양육협력과 양육스트레스 간의 관계에서 양육효능감의 매개효과

오한나 ( Oh Han Na ),변혜원 ( Byun Hye Weon ),이희연 ( Yi Hee Yeon ) 미래유아교육학회 2018 미래유아교육학회지 Vol.25 No.2

본 연구의 목적은 3개월 영아 어머니가 지각하는 배우자의 양육협력과 양육스트레스 간 관계에서 양육효능감의 매개효과를 검증하는데 있다. 연구대상은 서울과 경기도 지역에 거주하고 있는 3개월 영아 자녀를 둔 어머니 802명이었다. 자료 분석은 SPSS 23과 AMOS 23을 이용하여 3개월 영아자녀를 둔 어머니가 지각하는 배우자의 양육협력과 양육효능감, 양육스트레스 간 상관관계를 살펴보고 구조방정식을 이용한 매개모형을 진행하였다. 연구 결과 첫째, 3개월 영아 어머니가 지각하는 배우자의 양육협력과 양육효능감, 양육스트레스 간에는 유의미한 상관관계가 나타났다. 둘째, 3개월 영아 어머니가 지각하는 배우자의 양육협력과 양육스트레스 간의 관계에서 양육 효능감의 완전매개효과가 나타났다. 이러한 연구결과는 3개월 영아 어머니가 지각하는 배우자의 양육협력과 양육스트레스간의 관계에서 양육효능감의 매개적 역할로 양육스트레스를 완화시킬 수 있음을 시사한다. 이상의 연구 결과를 바탕으로 어머니의 양육효능감을 증진시키고 양육스트레스를 완화시킬 수 있는 방안을 제시하였다. The purpose of this study was to verify the mediating effect of parenting efficacy on parenting stress perceived by 3 month old infant’s mother. The subjects were 802 mothers of 3 month old infants living in Seoul and Gyeonggi-do. Data analysis was conducted using SPSS 23 and AMOS 23 to examine the correlation between parenting alliance, parenting efficacy and parenting stress perceived by mother with 3-month-old infant children. The results of this study were as follows: First, there was a significant correlation between parenting alliance, parenting efficacy, and parenting stress perceived by 3- month-old infant mothers. Second, the relationship between parenting alliance and parenting stress perceived by 3-month-old infant mother showed full mediation effect of parenting efficacy. The results of this study suggest that parenting efficacy can mediate parenting stress in relation to parenting alliance and parenting stress perceived by 3-month-old infant mothers. Based on the results of this study, we suggested ways to improve the mother's parenting efficacy and reduce parenting stress.

죽염 및 불소용액이 우식병소에 미치는 영향에 대한 미세전산화단 층 촬영술 이용 연구

오한나 ( Han Na Oh ),홍석진 ( Suk Jin Hong ),최충호 ( Choong Ho Choi ) 대한예방치과·구강보건학회 2011 大韓口腔保健學會誌 Vol.35 No.3

Objectives. The purpose of this investigation was to evaluate the remineralization effect of NaF, Bamboo salt and NaF+Bamboo salt solutions on bovine enamel formed incipient artificial enamel caries by microcomputed tomography (micro CT). Methods. Experimental solutions were 2% sodium fluoride solution (2% NaF group), 3% bamboo salt solution (3% BS group) and a mixed solution of 2% sodium fluoride solution and 3% bamboo salt solution (2% NaF+3% BS group). Specimens were prepared from extracted bovine teeth and were divided into 3 groups of 12 specimens each by randomized blocks according to the Vickers hardness number (VHN). The specimens` surfaces were then divided equally into three parts to observe the sound enamel area, the incipient enamel carious area and the remineralized enamel area. Only one-third of each specimen surface was coated with nail varnish and this was exposed to a lactate carbopol buffer system for 72 hours. One-half of the demineralized enamel area was then coated with nail varnish. For remineralization, the specimens were immersed in each experimental solution for 24 hours. After the solution treatment, the VHN and density were measured using a microhardness tester and a micro CT. Results. All experimental solutions showed remineralization effects (p<0.05). The differences of VHN after the experimental solution treatment were statistically significant among the 3 groups (p<0.01). The differences of density after the experimental solution treatment were statistically significant among the 3 groups (p<0.01). The density difference values of the groups were 0.36±0.10 in the 2% NaF group, 0.24±0.06 in the 3% BS group, and 0.35±0.60 in the 2% NaF+3% BS group. Conclusions. The results of the difference of density showed that micro CT could evaluate the remineralization effects of experimental solutions. Thus, it is suggested that a micro CT could be useful for the evaluation of the remineralization effect on incipient carious lesions.

에너지 음료가 법랑질 부식에 미치는 영향

오한나 ( Han Na Oh ),이혜진 ( Hye Jin Lee ) 한국치위생과학회 2015 치위생과학회지 Vol.15 No.4

Recently, energy drink consumption is rising. The purpose of this study was to examine the effect of energy drink on enamel erosion by measuring pH and titratable acidity in energy drink on the market. pH and titrable acidity in drink were measured by selecting 3 kinds of energy drinks with high sales volume among energy drinks on the domestic market. To evaluate the erosion level of normal enamel, the erosion level was measured by using a surface micro-hardness after soaking it in drink for 1 minute, for 3 minutes, for 5 minutes, for 10 minutes, and for 30 minutes while using 10 pieces of bovine specimens per each group. All the energy drinks were containing citric acid. As for pH in drinks, pH of Burn intense was the lowest with 2.51±0.01. Hotsix stood at 3.16±0.01. Redbull stood at 3.37±0.00. In pH 5.5, the titrable acidity of Burn intense was 3.59 ml. Redbull was 3.43 ml. Hotsix was 1.92 ml. All the energy drinks were reduced the surface micro-hardness according to a rise in time of immersion. Following the 30-minute treatment in drinks, the surface micro-hardness value was indicated to be the lowest in Redbull with 119.72±15.16 VHN. It was shown to be in order of Hotsix 208.75±10.99 and Burn intense 210.47±8.01. Hotsix and Burn intense had no statistically significant difference (p>0.05). Accordingly, all the energy drinks, which were used in the experiment, caused the tooth enamel erosion. Among them, Redbull led to the largest enamel erosion. Thus, energy drink containing citric acid and low pH can cause the enamel erosion. However, it is thought to be necessarily progressed by considering factors of influencing etching a little more diversely by additionally analyzing intraoral factors, acid kinds, and even the content in calcium, phosphate and fluoride.

죽염이 Streptococcus mutans의 우식활성에 미치는 영향

오한나 ( Han-na Oh ),최충호 ( Choong-ho Choi ) 대한구강보건학회 2016 大韓口腔保健學會誌 Vol.40 No.4

Objectives: The purpose of this study was to evaluate the anti-caries activity of bamboo salt on Streptococcus mutans. Methods: The pH of bamboo salt, bay salt, and NaCl were measured at concentrations of 1%, 3%, 5%, and 10%. At 3, 6, 9, 12, 18, and 24 h, the growth and acid production of S. mutans was measured using a spectrophotometer and pH meter, respectively. Results: The growth of S. mutans remarkably reduced with the addition of 1% NaCl. Bamboo salt showed effective growth inhibition at concentrations higher than 3%. Bay salt showed effective growth inhibition at concentrations higher than 5% (P<0.01). At salt concentrations of 1%, the pH value of bacterial culture broth reduced to below 5.5 after 12 h. Bamboo salt and NaCl reduced acid production at concentrations higher than 3%. Moreover, bay salt decreased acid production at concentrations higher than 5%. Conclusions: These results showed that the bamboo salt inhibited growth and acid production of S. mutans. Thus, bamboo salt can be considered a useful material for the prevention of dental caries.

유아의 자아탄력성과 문제행동의 관계에서 교사-유아 관계의 매개효과

오한나(Han Na Oh),김종훈(Jong Hoon Kim),이희연(Hee Yeon Yi) 학습자중심교과교육학회 2018 학습자중심교과교육연구 Vol.18 No.10

The purpose of this study is to investigate the mediating effect of teacher-child relationship on the relationship between children’s ego-resilience and behavior problems. The subjects of this study were 459 children 3-6 years old and 82 kindergarten teachers in Gyeong-gi area. The results of this study were as follows: First, there were positive correlations between ego-resilience of children and closeness in the teacher-child relationship, but negative correlations between conflict in teacher-child relationship and behavior problems in children. There were negative correlations between closeness in the teacher-child relationship and internalizing behavior problems in children. Also, there were positive correlations between conflict and dependency in teacher-child relationship and internalizing behavior problems and externalizing behavior problems in children. Second, mediating effects of conflict and dependency in teacher-child relationship appeared on the relationship between children’s ego-resilience and behavior problems. These findings suggest that conflict and dependency in teacher-child relationship may lead a mediating role in the relationship between children s ego-resilience and behavior problems. Therefore, we discussed the prevention and solution of children’s behavior problems through improvement of ego-resilience, teacher-child relationship. 본 연구는 유아의 자아탄력성과 문제행동의 관계에서 교사-유아 관계의 매개효과는 어떠한지 확인하는데 있다. 연구 대상은 경기 지역에 소재한 유치원에 근무하는 유아교사 82명과 담당하고 있는 만 3-6세 유아 459명이다. 연구 결과 첫째, 유아의 자아탄력성이 높을수록 교사-유아 관계 중 친밀감은 높아지고 갈등 관계는 낮아지며 유아의 문제행동은 낮아지는 것으로 나타났다. 또한 교사와 유아 간의 관계가 친밀할수록 내재화 문제행동은 낮아지며 갈등 관계와 의존 관계일수록 내재화 문제행 동과 외현화 문제행동은 더욱 높아지는 것으로 나타났다. 둘째, 유아의 자아탄력성과 문제행동 간 관계에서 교사-유아 관계의 갈등과 의존성의 매개효과가 나타났다. 이러한 연구 결과는 유아의 자아탄력성과 문제행동 간의 관계에서 교사-유아 간 갈등 및 의존 관계의 매개 역할을 통해 유아의 문제행동을 더욱 일으킬 수 있음을 시사한다. 이에 따라 유아 자아탄력성 및 교사-유아 간 관계의 증진과 갈등 완화를 통 해 유아 문제행동의 예방 및 해결방안에 대해 논의하였다.