• 치위생과학회지
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• 제20권4호
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• pp.252-260
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• 2020

Background: In this study, the bleaching effect and surface damage of two types of over-the-counter home tooth bleaching agents were explored using an in vitro study of bleaching agents applied to bovine teeth specimens for 14 days. Methods: Domestic over-the-counter home tooth bleaching agents of gel and patch form that shared common active ingredients and manufacturers were selected and tested. The experiment specimens were made using composite resin with bovine tooth samples and then measured the initial microhardness. Specimens were then divided into a Gel group and a Patch group and underwent bleaching treatment once a day for two weeks for 30 to 60 minutes (recommended) or 7 hours. All specimens were coffee-stained prior to bleaching. The bleaching effect was measured using a spectrophotometer and surface damage was measured using a microhardness meter. Results: The difference in color following the bleaching procedure was positive in both the Gel and Patch group, although there were no statistically significant differences in bleaching effect between groups. There was no significant difference in bleaching effect based on duration. The microhardness test revealed that both the Gel group and the Patch group had surface damage after bleaching. The greatest surface damage was found in the Patch group that had undergone a 7-hour bleaching treatment, although the differences were not statistically significant. Conclusion: The bleaching effect of the home tooth bleaching agent was visible to the naked eye. However, longer applications than recommended did not result in greater bleaching, unlike consumers' expectations, and instead increased the chance of enamel damage. As such, there is a need for consumers to be alert and adhere to recommendations provided by each company.

• 대한치과교정학회지
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• 제48권6호
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• pp.377-383
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• 2018

Objective: This study was performed to investigate the effects of external tooth bleaching with flouridation on the appearance of white spot lesions (WSLs) in vitro. Methods: In total, 125 bracket-bonded bovine incisor enamel blocks with artificial WSLs were randomly divided into a control group and four treatment groups (home bleaching, home bleaching + fluoridation, in-office bleaching, and in-office bleaching + fluoridation). A spectroradiometer (SR) and digital images (DIs) were used to evaluate colorimetric parameters (Commission Internationale l'Eclairage $L^*a^*b^*$) for all specimens. Color measurements were obtained before WSL formation (T1), after WSL formation (T2), and after completion of the external tooth bleaching treatment (T3). Results: The SRbased color change after bleaching was significantly greater in the treatment groups than in the control group (p < 0.05). SR-based lightness ($L^*$) and redgreen ($a^*$) values were significantly higher at T2 than at T1 (p < 0.001), with no significant changes in yellow-blue ($b^*$) values. At T3, SR-based $L^*$ values had increased while $a^*$ and $b^*$ values had decreased in the treatment groups (p < 0.001). The DI-based color difference between the sound enamel and WSL areas (DE*DI) increased significantly from T1 to T2 in all groups (p < 0.001) and significantly decreased from T2 to T3 in the treatment groups (p < 0.001). No significant differences in ${\Delta}E^*DI$ at T3 were shown between the four treatment groups (p > 0.05). Conclusions: The findings of this study suggested that external tooth bleaching with fluoridation can alleviate the conspicuity of WSLs.

• 한국식품조리과학회지
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• 제7권2호
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• pp.97-104
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• 1991

This study was carried out in order to study the protein functionality such as foaming and emulsifying properties by succinylation of peanut protein isolates. Succinylated and unsuccinylated peanut protein isolate was tested for to find out the effect of pH, heat treatment and sodium chloride concentration on the solubility, foam expansion, foam stability, emulsion capacity and emulsion stability. The results are summarized as follows; 1. Succinylation enhanced the solubility of peanut protein isotate (PPI). The solubility of succinylated PPI markedly increased at pH 4.5. When the protein solutions was heated, the solubility of succinylated PPI greatly increased than PPI at pH 3. With addition of NaCl, solubility of succinylated PPI increased at pH 7 and pH 9. 2. The foam expansion of PPI and succinylated PPI on pH was no difference between both proteins. Addition of NaCl and heat treatment caused steeply increased in foam expansion at pH 3. 3. The foam stability of PPI and succinylated PPI showed the lowest value at pH 4.5. When PPI and succinylated PPI was heated, foam stability of two proteins incensed at pH 3 and showed similar aspects between PPI and succinylated PPI. However, at pH 9 stability of succinylated PPI decreased by heat treatment over $60^{\circ}C$. 4. Emulsion capacity of succinylated PPI on pH was markedly increased and showed the highest value at pH 11. At pH 4.5 which is isoelectric point of PPI, emulsion capacity of PPI by succinylation improved than that of PPI. When succinylated PPI was heated, emulsion capacity was greatly increased at pH 2 and pH 7. With NaCl was added, emulsion capacity of succinylated PPI increased than that of PPI. 5. Emulsion stability of PPI and succinylated PPI was affected by pH and showed its highest value at pH 11. At pH 4.5, emulsion stability of succinylated PPI increased than that of PPI. Addition of NaCl and heat treatment caused slightly increased in emulsion stability of succinylated PPI.

• 대한가정학회지
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• 제8권1호
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• pp.87-92
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• 1970

Recently it has become a common belief that ascorbic acid comes to break up in the process of making its color after peeling it. In this study the writer has attempted to observe whethier ascorbc acid really breaks up or not, what percentage of salt is needed in water to keep ascorbic acid in the best condition. Ascorbic acid was quantified by the spectrophotometric method. The results were obtained as follows; It seems that ascorbic acid does not break up considerably in mixing by the imxer for two minutes and if the mixing lasts longer ascorbic acid breaks up by heat and presumably by enzyme and oxidation. Generally at our home the breaking of ascorbic acid usually does not appear so much as only two minutes, mixing gives us the desirable result.

• 가정간호학회지
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• 제6권
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• pp.59-65
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• 1999

In oder to investigate the basic data for the standard of visiting nursing activities and educational program for Public Health Nurses in Health Center in Korea. the health record review carried out regard to visiting nursing services of 131 subjects with visiting nursing care. The results were as follows: 1. Rates of visiting nursing services offered by Public Health Nurse of Health Center(in decreasing order)were health education and disease management(98.5%), activity assess-ment(94.7%), counseling(90.8%), dietary care (61.1%), exercise treatment(60.3%), examination(58.8%), medication(48.9%), referral to hospital(32.8%, vaccination against flu and hepatitis(29.8%), support for welfare and administration(24.4%), position change(9.9%), connection to voluntary services(9.9%), wound dressing(7.6%) and referral for home health care nursing(3.1%). 2. The subjects consisted of 38.2% in male and 61.8% in female. 77.1% of the subjects had no job.

• 한국의류학회지
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• 제12권2호
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• pp.181-188
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• 1988

Cotton fabrics were slack-mercerized in sodium hydroxide, ammonia water(min. $28{\%}\;NH_3$), and mixture of ammonia water/sodium hydroxide. The surface of treated cotton fabrics were observed through SEM, and the changes of fine structure were analyzed by X-ray diffractometer. In addition to that shrinkage was compared mutally, and tenacity-elongation compared, too. SEM photographs showed fibrls rearranged strightly toward fibre axis. X-ray diffraction represented increased amorphous fraction, and partial recrystallization into cellulose 2 lattic after treatment with sodium hydroxide and mixture of ammonia water/sodium hydroxide. The mercerization produced increased fibre tenacity-elongation with slark state. Lastly, the best condition of mercerization was $4\%/14\%$, $10^{\circ}C,\;5\~30$ min. in mixture of ammonia/sodium hydroxide.

• 한국보건간호학회지
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• 제13권2호
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• pp.202-214
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• 1999

This study was conducted to provide the data for the improvement of home health nursing services through the investigation of burden and satisfaction felt by family caregivers under home health nursing care. The study subjects consisted of 200 family caregivers who were enrolled m six university hospital home care services. Data were collected by using constructed questionnaires through mail from March to April of 1999. and analyzed by using t-test. ANOVA, Duncan-test. and Pearson Correlation Coefficients. The results were as follows: 1. The mean score of burden was 2.24. Among the SIX burden dimensions. the highest score was marked in time-dependence dimension. Caregivers were found to have greater burden in the low income families living in flats. In relation to the characteristics of patients. higher scores were shown in the male patients with cerebrospinal diseases. who also revealed higher score of dependency in the Activities of Daily Living. As a whole. there was no significant difference between home nursing care and clinical nursing care in terms of family caregivers' burden. The burden of time-dependence dimension in home nursing care was significantly higher than that of clinical nursing care while the burdens of physical. social. and financial dimensions were significantly lower than those of the clinical nursing care. 2. The mean score of satisfaction was 3.14. Among the six items. the highest score was marked in the nursing care and treatment skill. while the lowest score was marked in the cost containment. Family caregivers with higher academic background and higher income showed higher satisfaction score. The mean score of home care nursmg was significantly higher than that of clinical nursing care.

• The Journal of Korean Physical Therapy
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• 제11권2호
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• pp.61-73
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• 1999

This study was performed to investigate the degree of demand and general features of services required of home visiting physical therapy for chronic ill patients. The study subjects were ambulatory and admitted patients treated with physical therapy at six general and one oriental hospitals, one welfare center, four health centers located in Taejon from March 2, 1999 to March 16. Authors developed structured questionnaire, and distributed it to each physical therapist of study organizations. Total number of distributed questionnaire was 500, and 405 questionnaire were collected and analysed finally. 1. $82.4\%$ of patients and $90.0\%$ of caregivers are showed that home visiting physical therapy was needed(p<0.05) 2. The rate of necessity for home visiting physical therapy by kinds of disease was $949\%$ in cerebral palsy, $95.0\%$ in upper spinal cord injury, $83.3\%$ in lower spinal cord injury, $84.5\%$ in cerebral vascular accident, $89.6\%$ in traumatic brain injury, $83.5\%$ in other diseases. 3. In the general features of required service for home visiting physical therapy, $33.7\%$ of patients and $34.4\%$ of caregivers want special isolated physical therapy center, $33.1\%$ of patients and $43.3\%$ of caregivers want 3 times per week in frequency, $46.7\%$ of patients and $45.0\%$ of caregivers want 30-60minutes in treatment duration, and $48.0\%$ of patients and $46.7\%$ of caregivers want more intensive care than general hospitals. 4. In the working place of home visiting physical therapy, $36.1\%$ of patients and $36.2\%$ of caregivers wants physical therapist worked in general hospital. Also, $53.3\%$ of patients and $52.2\%$ of caregivers answered no interested in physical therapist's gender. The most preferential age of home visiting physical therapist is thirties in $43.2\%$ of patients and $63.4\%$ in caregivers

• 한국가정과교육학회지
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• 제22권4호
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• pp.1-13
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• 2010

본 연구는 식생활교육지원법에 제시된 식생활교육의 기본방향이 중학교 기술가정교과서의 식생활 단원에 어떻게 반영되어 있는지를 살펴보기 위한 것으로, 11종의 2007개정 교과서를 대상으로 하였다. 조사결과 모든 교과서들이 식생활교육지원법에 명시된 식생활교육의 기본방향 - 건전한 식습관 형성, 식생활 체험활동 촉진, 환경친화적인 식생활 실천, 전통 식생활 문화 계승과 지역 농수산물의 활용 등 - 에 대체로 부합하는 구성 및 서술을 담고 있는 것으로 나타났다. 그러나 그림, 사진, 그래프 등의 시각적 자료, 신문기사, 흥미를 유발할 수 있는 작은 이야기 등의 활용에서는 상당한 차이를 보였다.

• 간호행정학회지
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• 제19권4호
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• pp.437-448
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• 2013

Purpose: This study was a retrospective survey to examine economic feasibility of home care services for patients with diabetic foot. Methods: The participants were 33 patients in the home care services (HC) group and 27 in the non-home care services (non-HC) group, all of whom were discharged early after inpatient treatment. Data were collected from medical records. Direct medical costs were calculated using medical fee payment data. Cost-effectiveness ratio was calculated using direct medical costs paid by the patient and the insurer until complete cure of the diabetic foot. Effectiveness was the time required for a complete cure. Direct medical costs included fees for hospitalization, emergency care, home care, ambulatory fees, and hospitalization or ambulatory fees at other medical institutions. Results: Mean for direct medical costs was 11,118,773 won per person in the HC group, and 16,005,883 won in the non-HC group. The difference between the groups was statistically significant (p=.042). Analysis of the results for cost-effectiveness ratio showed 91,891 won per day in the HC patients, and 109,629 won per day in the non-HC patients. Conclusion: Result shows that the cost-effectiveness ratio is lower HC patients than non-HC patients, that indicates home care services are economically feasible.