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하명옥 ( Myung Ok Ha ),조민정 ( Min Jung Cho ),김은미 ( Eun Mi Kim ) 한국치위생학회(구 한국치위생교육학회) 2013 한국치위생학회지 Vol.13 No.2
Objectives: The purpose of this study was to evaluate the effects of incremental dental care(IDC) program on kindergarten children. Methods: The subjects were 46 kindergarten children aged 6 who wished participation in IDC program during 5 weeks at oral health center in G-college from March to May, 2012. The data of subjects were examined into oral conditions such as toothbrushing method and frequency, modified O`leary plaque index and dental caries activity before and after IDC program. The collected data were analyzed by SPSS statistical package version 19.0. Results: 1. The rolling and fones methods of toothbrushing increased from 10.8% to 91.3% after IDC program(p<.001). The change of toothbrushing frequency showed that over 3 times a day increased from 52.2% to 76.0% after IDC program(p<.01). 2. The modified O`leary plaque index of before toothbrushing education increased from 1st visit(score 32.19) to 5th visit(score 57.14) and after toothbrushing education increased from 1st visit(score 64.45) to 5th visit(score 78.27) during IDC program(p<.001). 3. As a results of dental caries activity test before and after IDC program, it was found that the bacterial numbers in S.mutans and Latobacillus reduced from 0.74, 0.70 to 0.28, 0.41 (p<.01) and the saliva buffering capacity increased from 1.50 to 2.02(p<.001). Conclusions: It is considered very necessary that IDC program should be maintained and extended to dental clinic so as to enhance the oral health state of kindergarten children.
하명옥 ( Myung Ok Ha ),최충호 ( Choong Ho Choi ),윤혜정 ( Hye Jeong Youn ),홍석진 ( Suk Jin Hong ) 대한예방치과·구강보건학회 2010 大韓口腔保健學會誌 Vol.34 No.4
Objectives. The aim of this study was to investigate the effect on the acid resistance of enamel after use dentifrice containing bamboo salt. Methods. Incipient caries lesion of bovine enamel was formed in pH 5.0 lactate carbopol buffer system for 60 hours. Then, experiment groups were divided (n=12/group) into four groups without statistical difference of Vickers hardness number (VHN) and were carried out under pH cycling model for 20 days as follows; fluoride free dentifrice (negative control), 1,000 ppm NaF dentifrice (positive control), 1,100 ppm NaF dentifrice (P&G Crest Cavity Protection) and 3.0% bamboo salt with 1,000 ppm NaF dentifrice (test dentifrice). Then, all specimens were immersed in acid solution which used incipient caries formation for 60 hours. Mineral loss value (ΔZ:vol%ㆍμm) and lesion depth (Ld:μm) of specimens were assessed by transversal microradiography (TMR). Results. After chemical pH cycling, the ΔZ of test dentifrice showed lower value than other groups but there was no significant difference among groups. The Ld of test dentifrice (61.59±6.58), P&G Crest Cavity Protection (64.56±6.31) and positive control (67.94±8.46) showed statistically significant lower than negative control (74.68±10.62) (p<0.01). After acid treatment, ΔZ of test dentifrice (2,403.62±448.10), P&G Crest Cavity Protection (2,459.24±412.22) and positive control (2,782.54±535.12) showed statistically significant lower than negative control (3,421.45±582.80)(p<0.001). Also, Ld of test dentifrice (66.51±9.86), P&G Crest Cavity Protection (69.43±10.23) and positive control (79.69±14.59) showed statistically significant lower than negative control (113.41±9.65)(p<0.001). Conclusions. The dentifrice containing NaF and bamboo salt showed acid resistance effect, thus it could be useful agent for prevention of dental caries.
일부 치과위생사의 노인 구강보건관리 제공 및 인식도에 대한 연구
정경이,하명옥,김경희 한국치위생학회 2020 한국치위생학회지 Vol.20 No.5
Objectives: The purpose of this study was to evaluate dental hygienists understanding of the provisions of oral health care and awareness for the elderly. Methods: A survey was conducted among 285 dental hygienists, currently practicing around Gwangju province, Korea. The questionnaire contained questions on general characteristics of the subjects (5 items), oral health status of the elderly (5 items), and awareness (8 items) among the dental hygienists. The data were analyzed using a chi-square test. IBM SPSS 21.0 program was used for all statistical analyses. Results: The results showed that 47.7% of the dental hygienists took care of 1 to 5 elderly patients per day; they could not provide high quality oral health education to these patients because of lack of knowledge, lack of treatment time, and excessive workload. An analysis of the hygienists’ professional educational experience related to oral healthcare of the elderly during university years showed that the older and more experienced hygienists’ were less likely to have completed this education, i.e., 22.05% and 10.9%, respectively (p<0.001). Of all the dental hygienists, 62.8% were interested in oral health problems of the elderly, and 34.4% of dental hygienists for geriatric oral care were the most needed for geriatric oral care education (p<0.001). Conclusions: According to these results, it is important that dental hygienists participate in training on oral healthcare for the elderly and develop various programs for managing the oral health of the elderly.
코로나-19 상황 하에서 대학 신입생의 대학생활적응과 중도탈락의도에 영향을 미치는 요인
신애리,하명옥,심형순 학습자중심교과교육학회 2023 학습자중심교과교육연구 Vol.23 No.14
Objectives This study was conducted to investigate the effect of freshman's major selection motivation and major satisfaction on college life adjustment and dropout intention in the difficult crisis situation of COVID-19. Methods Subject's general characteristics, major selection motivation, major satisfaction, college life adjustment, and dropout intention were investigated. The collected data were post-test using SPSS 22.0, Independent t-test, One-way ANOVA and Scheffe test, Pearson's correlation coefficient, was analyzed by multiple regression. Results The motivation for choosing a major, satisfaction with major, and adaptation to college life had a positive relationship with each other, and motivation for major choice, satisfaction with major, and adaptation to college life had a negative relationship with intention to drop out. Adaptation to college life had a significant positive effect on major choice motivation and major satisfaction, and dropout intention was significant with intrinsic motivation for major choice motivation, cognitive satisfaction with major satisfaction, subject satisfaction, environmental adaptation and career adjustment for college life adjustment. There was a talisman influence. Conclusions Therefore, when choosing a college major, students make their own choices in consideration of their aptitudes and aptitudes. After entering the chosen university and department, they are encouraged to improve their satisfaction with their major through credit management and self-development, and to improve their social status and adapt well to the university environment. It is thought that the intention to drop out halfway can be reduced if a systematic system is prepared to help and set up a career and employment related to the major after graduation.
김애옥,김경희,하명옥,Kim, Ae-Ok,Kim, Kyung-Hee,Ha, Myung-Ok 한국치위생학회 2017 한국치위생학회지 Vol.17 No.5
Objectives: The aim of this study was to investigate the effects of bamboo salts on remineralization effects on subsurface of artificial carious enamel. Methods: Incipient carious enamel was formed in permanent bovine incisors and then specimens were divided into three groups randomly: 3% bamboo salt (BS), 2% (NaF) and the solution of mixed 3% BS and 2% NaF. For remineralization, specimens of each of the three groups were treated for 24 hrs at $37^{\circ}C$ incubator. After treatment, specimens were analyzed using SEM and VHN. Statistical analysis used was one-way ANOVA. Results: In SEM observation, the BS group showed narrower distances between enamel rods than the cases of incipient subsurface caries enamel. The NaF and BS+NaF groups showed that the enamel rods near the surface were destructed, and innumerable round small particles were deposited near the surface of enamel. The BS+NaF group showed more minerals attachment between enamel rods than the cases of other groups. The differences in subsurface microhardness (${\Delta}VHN$) increased all of three groups in total by $80{\mu}m$. The ${\Delta}VHN$ of the BS+NaF group increased significantly more than NaF and BS groups in depth of $50{\mu}m$, $80{\mu}m$. Conclusions: The 3% bamboo salt with 2% NaF solution was found to increase subsurface hardness of incipient caries enamel. Thus, bamboo salt will be used to contribute to prevention on dental caries.