The purpose of this experiment was to determind whether the gold electrodeposit on Pd-Ag and Ni-Cr alloys influences on the shear bond strength between veneering resin and silicoated metal surface. All the metal specimens were sandblasted with 250microneter aluminum oxide and followed by silicoating and resin veneering. According to the metal surfaces to be veneered, experimental groups were divided into five. Group Prec : Gold alloy without gold coating Group Semi : Pd-Ag alloy without gold coating Group Base : Ni-Cr alloy without gold coating Group Semi-G : Pd-Ag alloy with gold coating Group Base-G : Ni-Cr alloy with gold coating All specimens were thermocycled 1,000 times at temperature of 5degrees C to 55degrees C. The effects of gold electrodeposit on the shear bond strength between resin and metal interface were measured and fractured surface of the resin veneered metal was examined under the scaning electron microscope. The following results were obtained 1. The shear bond strength between resin and metal was 64.51+/-11.11Kg/cm2in Prec group, 62.77+/-11.23Kg/cm2in Base group and 58.97+/-9.20 Kg/cm2in Semi Group. There was no significant difference among the groups. 2. The bond strength in groups Semi-G and Base-G decreased about 17%, compared to the non-gold-electrodeposit groups(Semi, Base). 3. In groups of non electrodeposit(Prec, Semi, Base), fracture occurred at the interface between alloy and resin, while fracture interface was observed between gold coating and resin in group Semi-G, and between metal substrate and gold coating in group Base-G resp[ectively.
Alloys* ; Aluminum Oxide

We present a case of generalized grannuloma annulare with perforating and subcutaneous forms which occurred in a 15-year-old girl. Two years ago, multiple umbilicated, match head to pea sized, erythematous papules were noted on the upper extremities. Then the patient also experienced crusted or ulcerated erythematous papular lesions on the lower legs. Recently, tender, subcutaneous nodules appeared on both soles. The biopsy specimens from the skin lesions of the hand and the sole showed typical findings of granuloma annulare in the dermis and the subcutis, respectively. On the histopathological examination of the calf lesion, palisading granuloma as well as transepidermally eliminating dermal collagenous and necrotic material were seen. The skin lesions were almost completely improved by treatment with dapsone, 100mg a day, for 8 weeks orally.
Adolescent ; Biopsy ; Collagen ; Dapsone ; Dermis ; Female ; Granuloma Annulare* ; Granuloma* ; Hand ; Head ; Humans ; Leg ; Peas ; Skin ; Ulcer ; Upper Extremity

The superior vena cava syndrome can occur when an extrnsc compression or intralurninal occlusion impedes blocxl flow through this vessel. We report a case of superior vena cava syndrome with tirc nbophlebitis on the right forearm in 57 year old male patient who used steroids (p.o) for 25 years.
Forearm ; Humans ; Male ; Middle Aged ; Steroids ; Superior Vena Cava Syndrome* ; Vena Cava, Superior*

Objectives: The purpose of this study was to identify the effectiveness of COVID-19 vaccinations on deaths of the COVID-19 cases in some elderly long-term care facilities (LTCF) in Gwangju Metropolitan City. Methods: The study subjects were 659 COVID-19 cases in residents of 7 elderly LTCF, Gwangju, from 21 Dec. 2021 to 28 Jan. 2022. The used variables were confirmed dates for COVID-19, demographic characteristics, co-morbidities, presentation of symptoms, death and vaccination related characteristics including type of vaccine, doses and dates. Vaccination status were classified as not vaccinated, partially and fully vaccinated. The associations of vaccination status and deaths of COVID-19 cases were tested by chi-square test and multiple logistic regression analysis. Results: The rates of not vaccinated, partially vaccinated and fully vaccinated were 19.4%, 10.2% and 70.4%, respectively. The mortality rate of the cases was 6.4%.The death rate by vaccination status was 16.4% in not vaccinated, 15.4% in partially vaccinated and 2.6% in fully vaccinated, showing a statistically significant difference. The adjusted odds ratios (ORs) (95% confidence intervals, CIs) of death compared to fully vaccinated were 7.64 (3.87-16.34) in non-vaccinated, and 6.97 (3.44-14.14) in partially vaccinated. Conclusions COVID-19 vaccination seems to work effectively in preventing deaths of COVID-19 cases of elderly LTCF residents. This finding support that fully vaccinations in high risk group such as elderly LTCF residents is very important for one of strategies of COVID-19 management.

To get basic data for the development of health care toward the staff of a university, an evaluation study of the risk factors for the cardiovascular disease utilizing data from questionnaire and health examination performed in 1994 for 1233 staff of Chosun University and its affiliated Hospital. The results are as follows: 1. The mean values of systolic blood pressure was 122.0+/-14.7mmHg for the male and 111.8+/-12. lmmHg for the female. The mean values of diastolic blood pressure was 82. 5+/-12.0mmHg for the male and 73.7+/-10.0mmHg for the female. The mean values of serum total cholesterol was 185.6+/-33.4mg/dl for the male and 173.5+/-32.6mg/dl for the female. The mean values of body mass index(BMI) was 23. l+/-2.4kg/m2 for the male and 21.5+/-2.3kg/m2 for the female. The smoking rate of the male was 47. 6% and that of the female was 0.4%. 2. The systolic and diastolic blood pressure levels increased with age in both sexes. Under 55 years of age the mean blood pressures of the male were higher than that of the female, but the levels of both sexes at 55-64 year old group did not show any big difference. The mean values of serum total cholesterol and BMI also increased with age in both sexes. Under 45 years of age, the serum cholesterol and BMI levels of the male were higher than that of the female, but on the contrary, levels of the male were lower than that of the female at 55-64 year old groups. The mean cholestrol and BMI levels of both sexes at 45-54 year old group was similar. As the age increases, the rate of exsmoker increased and the rate of current smoker decreased among the male. 3. The additive cardiovascular risk scores were calculated considering the values of blood pressure, serum total cholesterol level and the smoking status. The distribution curve of risk scores for the male showed 39. 1% under 4 points and 60.9% above 4 points with the peak at 4 points. 61.7% of the female showed that the risk scores were under 4 points and the rest was more than 4 points with maximum 9 points. As a whole the risk scores of the female were lower than that of the male. 4. By the analysis of association between the risk score of cardiovascular disease and the subjective symptom under the stratification of age and sex, the prevalence of exertional dyspnea was significantly higher at 35-44 year male group and prevalence of dizziness was significantly higher at 45-64 year male group as the risk score of cardiovascular disease increased. Among 25 34 year and 45-64 year female group persons with lower risk score of cardiovascular disease showed higher prevalence of dizziness than persosns with higher risk score.
Blood Pressure ; Cardiovascular Diseases ; Cholesterol ; Delivery of Health Care ; Dizziness ; Dyspnea ; Female ; Humans ; Male ; Prevalence ; Risk Factors* ; Smoke ; Smoking ; Surveys and Questionnaires

OBJECTIVE: The purpose of this study was to determine the frequency and distribution of cytogenetically abnormal miscarriages in couples with spontaneous abortions (SA) or recurrent miscarriages (RM). METHODS: Karyotyping of specimens from 164 abortuses with SA and 86 abortuses with RM was successfully performed according to the standard cytogenetic methods using G-banding technique. RESULTS: Among the total 164 cases of SA group, 81 (49.4%) were euploid and the rest (83, 50.6%) showed chromosomal abnormalities. In RM(> or =2) and RM(> or =3) group, 31 (36.0%)/27 (34.6%) cases were euploid and 55 (64.0%)/51(65.4%) cases were abnormal, respectively. A statistically significant difference was found in the rate of cytogenetic abnormality between SA and RM groups (P<0.05). In all groups, women with advanced maternal age (> or =35 years) had a higher rate of chromosome anomalies compared with women younger than age 35 (normal:abnormal = 32.4%:67.6% for > or =35 years and 53.8%:46.2% for <35 years in SA; 19.2%:80.8%/21.7%:78.3% for > or =35 years and 43.3%:56.7%/40.0%:60.0% for <35 years in RM(> or =2) and RM(> or =3), respectively; P<0.05). In SA group, an increase of normal karyotypes was noted with increased gestational age (<10 week, 38.0%; 10-15 week, 53.5%; 16-20 week, 65.7%). In RM group, most of cases were in <10 week and the frequency of trisomies with chromosomes 1 to 10 were increased compared with that of SA. CONCLUSION: There was a statistically significant difference in the frequency and distribution of chromosomal abnormalities between SA and RM groups. Our results will provide useful information for diagnosis and genetic counseling of patients with SA or RM.
Abortion, Habitual* ; Abortion, Spontaneous* ; Chromosome Aberrations ; Cytogenetic Analysis ; Cytogenetics* ; Diagnosis* ; Family Characteristics ; Female ; Genetic Counseling ; Gestational Age ; Humans ; Karyotype ; Karyotyping ; Maternal Age ; Pregnancy ; Trisomy

Pseudo-kaposi's sarcoma is a vasoproliferative disorder that may resemble Kaposi's sarcoma, clinically and histologically. In most cases, it has been associated with congenital or iatrogenic arteriovenous fistula and chronic venous insuffiency. We present a 36-year-old male patient with pseudo-Kaposi's sarcoma caused by a deed vein thrombosis in the absence of any detectable underlying etiologic factors.
Adult ; Arteriovenous Fistula ; Humans ; Male ; Sarcoma ; Sarcoma, Kaposi* ; Thrombosis ; Veins ; Venous Thrombosis*

OBJECTIVES: Shift work is a stressful situation. It is important to know the factors associated with the ability to adapt to a shift work schedule. The aim of the present study was to investigate the association between sleep, as well as personality variables, and the resilience of shift work nurses. METHOD: Self-report questionnaires were administered to 95 nurses who worked in one national university hospital. Connor-Davidson resilience scale, hospital anxiety and depression scale, morningness-eveningness scale, Pittsburgh sleep quality index, other sleep-related questionnaires, and Korean defense style questionnaires were used. RESULTS: Age, shift work duration, off-day oversleep, depression, anxiety, adaptive defense style, and self-suppressive defense style were significantly associated with resilience (p < 0.05). Multiple regression analysis showed that age (beta = 0.34, p < 0.05), depression (beta = -0.25, p < 0.05), adaptive defense style (beta = 0.45, p < 0.001), and self-suppressive defense style (beta = -0.19, p < 0.05) significantly predicted the resilience of shift work nurses. Concerning individual defense mechanisms, resignation (beta = -0.20, p < 0.05), sublimation (beta = 0.19, p < 0.05), omnipotence (beta = 0.19, p < 0.05), and humor (beta = 0.20, p < 0.05) significantly predicted the resiliency. CONCLUSION: The findings indicate that a specific defense style and other mechanisms were associated with the resilience of shift work nurses. A future prospective study with more participants could further clarify the relationship between sleep-related variables, as well as personality factors, and resilience of shift work nurses.
Anxiety ; Appointments and Schedules ; Defense Mechanisms ; Depression ; Surveys and Questionnaires ; Sublimation

Purpose: This study assessed the prevalence of malnutrition and obesity among children and adolescents from immigrant families living in Korea. Methods: A total of 436 subjects (age: <18 years) from immigrant families were examined. The 2017 Korean National Growth Charts for Children and Adolescents were used to assess the malnutrition and obesity status of the subjects. Subjects with a height-for-age of <3rd percentile, weight-for-age of <5th percentile, body mass index (BMI)-for-age of <5th percentile, and BMI-for-age of ≥95th percentile were defined as stunted, underweight, wasted, and obese, respectively. Results: The overall prevalence of stunted, underweight, wasted, and obese subjects was 5.5%, 9.0%, 8.8%, and 18.6%, respectively. Comparison of first- and second-generation immigrants revealed that the prevalence of malnutrition was higher in first-generation immigrants than in second-generation immigrants. Moreover, the prevalence of malnutrition and obesity in first-generation immigrants living in Korea for <5 years was not significantly different from that in first-generation immigrants living in Korea for ≥5 years. In addition, comparisons by family origin showed that children from Central Asian families had a higher prevalence of malnutrition than other children. Conclusion Children and adolescents from immigrant families still suffer from malnutrition after resettling in Korea. Therefore, nutritional programs should be provided to improve their malnutrition status.

Purpose: This study assessed the prevalence of malnutrition and obesity among children and adolescents from immigrant families living in Korea. Methods: A total of 436 subjects (age: <18 years) from immigrant families were examined. The 2017 Korean National Growth Charts for Children and Adolescents were used to assess the malnutrition and obesity status of the subjects. Subjects with a height-for-age of <3rd percentile, weight-for-age of <5th percentile, body mass index (BMI)-for-age of <5th percentile, and BMI-for-age of ≥95th percentile were defined as stunted, underweight, wasted, and obese, respectively. Results: The overall prevalence of stunted, underweight, wasted, and obese subjects was 5.5%, 9.0%, 8.8%, and 18.6%, respectively. Comparison of first- and second-generation immigrants revealed that the prevalence of malnutrition was higher in first-generation immigrants than in second-generation immigrants. Moreover, the prevalence of malnutrition and obesity in first-generation immigrants living in Korea for <5 years was not significantly different from that in first-generation immigrants living in Korea for ≥5 years. In addition, comparisons by family origin showed that children from Central Asian families had a higher prevalence of malnutrition than other children. Conclusion Children and adolescents from immigrant families still suffer from malnutrition after resettling in Korea. Therefore, nutritional programs should be provided to improve their malnutrition status.