• 한국치위생학회지
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• 제13권2호
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• pp.297-303
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• 2013

Objectives : The purpose of this study was to evaluate the oral health status of the disabled people in Ulsan. Methods : Two dentists taken a calibration training for national oral health survey examined the Oral health status on 110 disabled people in Ulsan, in 2009. The surveyed disabled people, 6 to 19 years old, have been supplied with the oral health care services by dentists, oral hygienists and volunteers at dental clinics of schools and a dental clinic supported from Ulsan Metropolitan City Nam-Gu Health Center since 1997. The obtained data from these surveys were analyzed with the SPSS statistical package. Results : Among subjects aged 12-14 years, DMF rate was 38.2%; Active D rate, 17.6%; DMFT index, 1.15; DT rate, 33.33%; MT rate, 0.00%; FT rate, 66.67%. Oral heath status of disabled people in Ulsan were evaluated to be a similar level to the Ulsan non-disabled citizens from 2010 Korean National Survey. Conclusions : The oral health care programs for disabled people using voluntary dentists, oral hygienists and other workers in Ulsan are evaluated to be effective for the disabled people.

• 대한소아치과학회지
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• 제5권1호
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• pp.39-43
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• 1978

I have studied on the dental caries incidence of 172 poliomyelitis children who are housed in rehabilitation hospital age from 3 to 13 years compared to a group of normal children. The results were as follows; 1. def rate of the poliomyelitis children was 68.63% (male 66.67%, female 71.43%) and was low value compare with that of control group of 78.64% (M 75.93%, F81.63%). 2. def index per person of poliomyelitis children was 2.37 (M 2.00, F 2.91) and was low in number compare with that of 3.29 (M 3.33, F 3.24) in control group children. 3. DMF rate of the poliomyelitis children was 59.41% (M 54.55%, F 62.79%) and was higher value than that of 48.28% (M 37.88%, F 59.96%) in control group. 4. DMF incidence per person in poliomyelitis was 1.62 (M1.48, F1.89) and was also higher in number than that of 1. 220 (M 0.85, F 1.49) in control group. 5. The dental caries incidence was higher in female than in male.

• 한국가금학회지
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• 제40권3호
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• pp.171-178
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• 2013

본 연구는 닭 정액 동결 보존을 위하여 동결 보호제로 7%의 DMA, DMF 그리고 7.5%의 MA를 이용하여 동결 융해 후 정자의 생존율, 정상 첨체율 및 미토콘드리아의 활성도를 FACS를 이용하여 평가하고, 수정률과의 상관관계를 조사하고자 수행하였다. 닭 정액을 동결한 결과, DMF를 사용하였을 때 생존율은 $52.1{\pm}5.52%$로 DMA와 MA에 비해 유의적으로 높았으며(P<0.05), DMA $46.94{\pm}5.06%$, MA $36.56{\pm}4.66%$순으로 나타났다(P<0.05). 첨체막이 파열되고 죽은 정자는 이와 반대로 MA를 이용하여 동결한 정액이 $61.16{\pm}1.86%$로서 가장 높았고, DMA $47.48{\pm}1.9%$ DMF $36.56{\pm}1.42%$순으로 유의적 차이를 보였다(p<0.05). 정자 미토콘드리아 막이 손상되지 않은 생존 정자는 DMF를 이용하여 동결한 정액에서 $52.68{\pm}1.07%$로 가장 높게 나타났고, DMA $44.46{\pm}1.04%$, MA $38.36{\pm}1.88%$순으로 유의적 차이를 나타냈다(p<0.05). 7% DMF를 사용하여 동결하였을 때 수정률은 유의적인 차이가 없었지만, 생존율 및 미토콘드리아 활성도가 유의적으로 가장 높았으며, 정상 첨체율이 유의적으로 높았다. 이는 DMF를 이용한 닭 정자 동결법이 정자의 세포막과 첨체의 손상에 미치는 영향이 가장 낮은 동결 보호제인 것으로 사료된다.

• 대한치과의사협회지
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• 제17권2호통권117호
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• pp.141-145
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• 1979

The author, through oral examination, had surveyed the caries experienced teeth in 250 Korean mental Disorders(153 males and 97 fameles) who took it a rule consume a Vegetable diet and had litte chance to Consume refimed Corbohydrates, unlike the Common populars. DMF rate DMFT rate index DT rate MT rate and FT rate had been calculated and Compared with Common Popular's in same ages group. Following are the obtained results 1. In the mental Disorders, Caries experience rate was 52.19% 2. D.M.F. rate and index were lower in the females than in the males 3. The Caries experience rate in the mental Disorders was lower than in the Common Populars 4. In the mental Disorders the F.T. rate was higher in females than in males D.T. rate higher in males than in females and MT rate, lower in males than in females 5. In generally D.T. rate in the mental Disorders was lower than in Controls, M.T. rate resembled as Controls and F.T. rate higher

• 한국산학기술학회논문지
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• 제14권11호
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• pp.6000-6007
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• 2013

유기합성 과정에서 응용범위가 넓고 안정한 알코올류의 산화제에 대해 많은 연구가 진행 되고 있으며, 그중에서도 Cr(VI)-계열의 시약들이 산화제로 널리 이용되어 왔다. 그러므로 유기 용매에 잘 용해되고, 일차 알코올을 알데히드까지만 산화시키는 산화제의 합성과 그에 따르는 메카니즘 규명이 필요하게 되었다. Cr(VI)-헤테로고리 착물인 Cr(VI)-isoquinoline를 합성하여, 적외선 분광광도법(IR), 유도결합 플라즈마(ICP) 등으로 구조를 확인하였다. 또한 여러가지 용매 하에서 Cr(VI)-isoquinoline를 이용하여 벤질 알코올의 산화반응을 측정한 결과 유전상수(${\varepsilon}$) 값이 큰 용매 순서인 시클로헥센<클로로포름<아세톤$CH_3$, m-Br, m-$NO_2$)을 효과적으로 산화시켰다. 여기서 전자받개 그룹들은 반응 속도가 감소한 반면에 전자주개 치환체들은 반응속도를 증가시켰고, Hammett 반응상수(${\rho}$) 값은 -0.69(308K) 이였다. 그러므로 본 실험에서 알코올의 산화반응 과정은 먼저 크로메이트 에스테르 형성과정을 거친 후, 속도결정단계에서 수소화 전이가 일어나는 메카니즘임을 알 수 있었다.

• 문화기술의 융합
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• 제8권6호
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• pp.927-933
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• 2022

한 분자 내에 여러 가지 히드록시기가 존재 할 때, 특정 히드록시기만을 선택적으로 산화시키는 산화제는, 알코올을 포함한 유기화학 합성과정에서, 벤질알코올, 알릴알코올, 일차알코올, 이차알코올들이 있을 때, 특정 알코올만을 선택적으로 산화시키는 산화제로 사용할 수 있다. 우리는 (C₁₀H₈N₂H)₂Cr₂O₇을 합성하여, 적외선(FT-IR)과 원소분석 등으로 구조를 확인하였다. 유기용매들에서, (C₁₀H₈N₂H)₂Cr₂O₇을 이용하여 벤질알코올의 산화반응을 측정한 결과, 유기용매의 유전상수 값이 커짐에 따라 반응성이 증가했다. DMF, acetone 용매에서 (C₁₀H₈N₂H)₂Cr₂O₇을 이용하여알코올들의 산화반응을 측정한 결과, 벤질알코올, 알릴알코올, 일차알코올 및 이차알코올들을 알데히드나 케톤(65%~95%)으로 전환시키는 효율적인 산화제였다. DMF, acetone 용매에서 (C₁₀H₈N₂H)₂Cr₂O₇을 이용하여 알코올 혼합물들의 산화반응성을 측정한 결과, 이차알코올들이 있을 때, 벤질알코올, 알릴알코올, 일차알코올들을 선택적으로 산화(15%~95%) 시켰다. H₂SO₄ 촉매를 첨가 후, DMF 용매에서, (C₁₀H₈N₂H)₂Cr₂O₇은 벤질알코올과 그의 유도체들을 효과적으로 산화시켰다. Hammett 반응상수(ρ) 값은 -0.69(308K) 이었다. 본 실험에서 알코올의 산화반응 과정은 속도결정단계에서 수소화 전이가 일어났다.

• 대한소아치과학회지
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• 제25권2호
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• pp.441-449
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• 1998

For the purpose of knowing oral status of handicapped persons and surveying correlative factors, authors interviewed and inspected 259 persons (cerebral palsy 143, mental retardation 101, Down's syndrome 15) from six year to thirty years old in Kwangju. The results were as follows. 1. The dmf rate and dft index of handicapped persons according to age were lower than that of report of normal persons. 2. The DMF rate and DMFT index of handicapped persons increased with age and were similar to or lower than that of report of normal persons by the age of twenty, but were higher after that age. There was no significant difference between handicaps in DMFT rate. 3. Percentage of toothbrushing by himself or herself was 74% in mental retardation, 69% in Down's syndrome, and 48% in cerebral palsy and the frequency of toothbrushing per day of mental retardation, Down's syndrome was higher than that of cerebral palsy. The frequency of toothbrushing per day increased with age. The number of toothbrushing of handicapped persons was slightly higher than that of report of normal persons. 4. Prevalence of gingivitis was 62% in cerebral palsy, 48% in Down's syndrome and 60% in mental retardation. Prevalence of gingivitis increased with age, and was higher than that of report of normal persons. 5. Percentage of tooth anomaly was 15% in Down's syndrome, 8.5% in mental retardation and 4.9% in cerebral palsy. In this study, dental caries of handicapped persons was similar to or lower than that of normal persons and increased with age. The prevalence of gingivitis was much higher in handicapped persons. Subject or frequency of toothbrushing had no influence on the dental caries and gingivitis, education of oral health and system are needed.

• 대한소아치과학회지
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• 제32권1호
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• pp.67-74
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• 2005

본 연구의 목적은 타액 분비량, 타액의 완충능력 그리고 타액 내 뮤탄스 연쇄상구균 수를 측정하여 치아 우식경험도와의 상관관계를 분석하기 위하여 시행하였다. 81명의 평균연령 26.1세인 81명의 전북대학교 치과대학생을 대상으로 구강내 우식경험지수를 조사한 후 타액 분비량을 측정하였고, 시판 중인 Dentobuffer Strip 키트와 Dentocult SM-Strip mutans 키트(Orion Diagnostica, Finland)를 사용하여 타액의 완충능력과 뮤탄스 연쇄상구균 수를 평가한 결과, 다음의 결론을 얻었다. 1. 조사 대상자의 평균 DMFT와 DMFS는 6.57과 12.65를 나타냈다. 2. 일반적으로 우식경험지수가 높을수록 타액 분비량이 낮아지는 경향을 보였으나, 이 중 자극성타액 분비량과 DMFT사이에서만 통계적으로 유의한 차이를 나타냈다(P<0.05). 3. 타액의 완충능력과 우식경험도 사이의 관계에서 타액의 PH가 낮아짐에 따라 DMFT와 DMFS는 증가하였으며, 특히 DMFT의 경우 통계적으로 유의한 결과를 보였다(P<0.05). 4. 타액 내 뮤탄스 연쇄상구균의 수가 높을수록 DMFT와 DMFS가 높게 나타났으며 통계적으로 유의한 차이를 나타냈다(p<0.05). 5. 자극성 타액 분비량이 낮을수록, 타액의 완충능력이 낮을수록, 그리고 타액 내 뮤탄스 연쇄상구균 수가 많을수록 더 높은 우식경험도를 나타냈다.

• 한국치위생학회지
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• 제12권1호
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• pp.145-156
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• 2012

Objectives : By analyzing the affects of the mother's oral care to the caries experiences of the elementary school children, To looking for the way to prevent dental caries in the primary school, to provide baseline data to perform the associated oral health education. Methods : Between the 3,676 children's dental check-up data and the 2,934 survey of parents from 9 elementary schools in the the Gyeonggi Province, the exactly matching data of 2,358 pairs, children versus mothers, were analyzed during the period, 2009 May 4 to July 20, By using the PASW 18(SPSS-PC 18), Frequency analysis of the collected data, and cross-analysis, ANOVA, Bonferroni post-analysis was performed. Results : The findings of the study were as follows. 1. In children, the ratio(DMF rate)of the dental caries experience in permanent teeth, appeared higher for men than women. Divided by grade level, the ratio of caries experience in the permanent teeth(DMF rate) generally appear higher in older than young. Thus between the child's gender and grade level by the ratio of caries experience in the permanent teeth(DMF rate) showed the statistically significant differences (p<0.05). 2. Between the socioeconomic characteristics of mothers and the children's level of dental caries experiences, not showed the statistically significant difference.(p>0.05). 3. The significant difference showed between the dental caries levels of the children and the mother's oral health care behavior - a toothbrush replacement period, mother's broken teeth, mothers guidances of the brushing after snacks for children(p<0.05). Conclusions : The mother's oral health attitudes and behaviors can affect to their children's oral care habits. Therefore The mother themselves should have the right proper habit of oral health care, so that in oral health care mothers should be the model for their children. Institutionally more systematic and detailed oral health educational program in conjunction with the family is needed.

• Bulletin of the Korean Chemical Society
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• 제18권8호
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• pp.850-856
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• 1997

A series of tetradentate Schiff-base ligands; 1,3-bis(salicylideneimino) propane, 1,4-bis(salicylideneimino)butane, and 1,5-bis(salicylideneimino)pentane, and their Cu(Ⅱ) and Ni(Ⅱ) complexes have been synthesized. The properties of ligands and complexes have been characterized by elemental analysis, IR, NMR, UV-Vis spectra, molar conductance, and thermogravimetric anaylsis. The mole ratio of Schiff base to metal at complexes was found to be 1 : 1. All complexes were four-coordinated configuration and non-ionic compound. The electrochemical redox processes of the ligands and their complexes in DMF solution containing 0.1 M TEAP as supporting electrolyte have been investigated by cyclic voltammetry, chronoamperometry, differential pulse voltammetry at glassy carbon electrode, and by controlled potential coulometry at platinum gauze electrode. The redox process of the ligands was highly irreversible, whereas redox process of Cu(Ⅱ) and Ni(Ⅱ) complexes was observed as one electron transfer process of quasi-reversible and diffusion-controlled reaction. Also the electrochemical redox potentials of complexes were affected by chelate ring size of ligands. The diffusion coefficients of Cu(Ⅱ) and Ni(Ⅱ) complexes in DMF solution were determined to be 4.2-6.6×10-6 cm2/sec. Also the exchange rate constants were determined to be 3.6-9.7×10-2 cm/sec.