Accurate reproduction of intraoral tissue is essential in the fabrication of fixed prosthesis. This selection of impression material and method is very important. In this study, vinyl polysiloxane type impression material Panasil was used. Three impression methods ; one-step technique, individual tray technique, and individual tooth tray technique using the vinyl polysiloxane type bite registration material Futar Occlusion, were used to take horizontal and vertical impression. Improved stone models were fabricated. The amount of occlusal surface discrepaneies, interabutment distance discrepancies, amount of marginal defect were evaluated with the X-PLAN360d and photoscanning. The results were as follows. 1. There was no significant difference in occlusal surface according to the directions and techniques of impression taking. 2. There was no significant difference in interabutment distance discrepancies according to the directions and techniques of impression taking 3. There was no significant difference in marginal discrepancies according to the direction of impression taking but there was significant difference between one-step technique and individual tray technique, individual tooth tray technique (P<0.05). Taken together, these results suggest that individual tray technique and individual tooth tray technique are more accurate for impression taking than one-step technique.
Jaw Relation Record ; Prostheses and Implants ; Reproduction ; Siloxanes ; Tooth

Dental porcelain should have adequate strength and similar esthetics as natural teeth. Recently esthetics has become a high priority in clinical dentistry. Thus the evaluation of color stability of dental porcelain has become an important part in dental research. The purpose of this study was to evaluate the difference in color stability of 3 types of porcelain (Vintage, VMK 95, CERAMCO II). The porcelain were divided into groups by 2 types of treatment (Glazing or non-glazing and thermocycling or non-thermocycling). The porcelain wee dyed with methylene blue and distilled water, and then the color stability was evaluated with a spectrophotometer. The results were as follow ; 1. The color change of porcelain increased in the order of VMK 95, Vintage, CERAMCO II. But there was no significant difference. 2. The color change decreased in the glazing group compared to the non-glazing group(p<0.05). 3. The color change increased after thermocycling But there was no significant difference. 4. The color change according to dye method was significantly larger with methylene blue copared to distilled water(P<0.05).
Crowns* ; Dental Porcelain* ; Dental Research ; Dentistry ; Esthetics ; Methylene Blue ; Tooth ; Water

BACKGROUND: Ureteral stone(UTS) and acute pyelonephritis are the most common causes of nontraumatic acute flank pain in adults. Urography(IVU) is known as the most ideal diagnostic modality of obstructive uropathy to date. However, it has many practical limitations in overcrowding Korean emergency department to perform IVU as the diagnostic test of UTS. So we have performed prospective analytic study to compare IVU with its alternative diagnostic modalities. METHOD AND RESULTS: Our study was performed at Asan Medical Center from March, 1998 to July, 1999. We performed urinalysis, KUB, grayscale ultrasonography, and IVU in 243 patients, suspected to have UTS, based on histories, physical examination. After excluding patients with undetermined results(n=7) or spontaneous passage of stone before IVU(n=24), 212 patients were enrolled in our study. All of the other diagnostic tests were performed within one hour after emergency room presentation except IVU (53+/-24 hours). Diagnostic agreement among tests are as follows: Urinalysis shows good agreements with KUB(0.53) and IVU(0.62). KUB shows good agreement with IVU(0.48). Ultrasonography shows good agreement with IVU(0.58). Sensitivity(%), specificity(%), positive predicitive value(%), negative predicitive value(%), accuracy(%), and odds ratio of each diagnostic methods are as follows: Urinalysis is 91, 19, 78, 42, 74, 3.88; KUB is 55, 33, 72, 19, 50, 2.49; ultrasonography is 58, 92, 96, 41, 66, 45.61, and IVU is 81, 96, 98, 62, 84, 107.72. CONCLUSION: Although IVU seems to be the most ideal diagnostic modality for the UTS to date, it takes too long time for emergency physicians to confirm the diagnostic using IVU. We can performed other diagnostic modalities within one hour. However, emergency physicians suffer from poor diagnostic accuracy. Therefore, it is concluded that we are in need of more accurate alternative diagnostic modalities for UTS.
Adult ; Chungcheongnam-do ; Diagnosis* ; Diagnostic Tests, Routine ; Emergencies* ; Emergency Service, Hospital* ; Flank Pain ; Humans ; Odds Ratio ; Physical Examination ; Prospective Studies ; Pyelonephritis ; Ultrasonography* ; Ureter* ; Urinalysis

BACKGROUND: The purpose of this article was to identify the risk factors related to development of hemodynamically significant cardiac arrythmias in patients with mechanical ventilation. METHODS AND RESULTS: Holter recording and echocardiogram were performed after 30 minutes of ventilator initiation in patients on mechanical ventilation(MV) owing to respiratory failure(RF) from various reasons. From 68 patients, hemodynamically significant cardiac arrythmias were detected in 18 patients(26.5%). Initial mean arterial pressure, maximal heart rate, and initial pH were identified as risk factors for hemodynamically significant cardiac arrythmias. Additionally, the patients with pressure-controlled ventilation as an initial ventilatory mode developed hemodynamically significant cardiac arrythmias less frequently than the patients with other modes(15.8% vs. 40%, p=0.03). In multivariate analysis, initial mean arterial pressure(<70mmHg, odds ratio[OR]:5.5;95% confidence interval[CI]:1.2 to 24.2, p=0.026), maximal heart rate(>120/min, OR:19.7;95% CI:2.0 to 190.0, p=0.01), and pressure-controlled ventilation(OR:0.13,95% CI:0.03 to 0.55, p=0.006) were associated with the development of hemodynamically significant cardiac arrhythmias. CONCLUSION: Theses findings suggest that during the early stages of mechanical ventilation with acute respiratory failure, hemodynamically significant cardiac arrhythmias are directly associated with tachycardia(>120/min), initial MAP(<70mmHg), and, inversely, the initial use of pressure-controlled ventilation.
Arrhythmias, Cardiac* ; Arterial Pressure ; Heart ; Heart Rate ; Humans ; Hydrogen-Ion Concentration ; Multivariate Analysis ; Respiration, Artificial* ; Respiratory Insufficiency* ; Risk Factors* ; Ventilation ; Ventilators, Mechanical

Toxic epidermal necrolysis (T~EN) is a severe mucocutaneous disease characterized by epidermal necrosis possibly extended to the entire body surface and involving multiple internal organs. Digestive tract may be involved too, but there is few report about gastrointestinal lesion in patient with TEN. Recently we experienced a case of TEN with gastrointestinal bleeding in previously healthy 32-year-old woman. The condition developed three days after the initiation of treatment with NSAID and progressed caudally, involving 60 percent of the skin surfaces. During a period of admission gastrointestinal bleeding was noticed. The gastrofiberscopy showed diffuse superficial mucosal lesion with oozing from swollen friable and erythematous mucosa. The skin lesion was progressed inspite of withdrawal of causative agents. The patient was expired due to combined septic shock 10 days later. We report this case with gastrofiberscopic findings and a brief review of literature.
Adult ; Female ; Gastrointestinal Tract ; Hemorrhage* ; Humans ; Mucous Membrane ; Necrosis ; Shock, Septic ; Skin ; Stevens-Johnson Syndrome*

BACKGROUND: The red cell distribution width(RDW) has been reported to be of value in discriminating iron deficiency anemia(IDA) from the anemia of the other causes(non-IDA). The combination of a low MCV and a high RDW may indicate iron deficiency anemia. The purpose of this study was to discriminate IDA from anemia, using automated blood cell count alone. METHODS: We collected 139 cases of anemia in outpatients, with 80 cases of IDA and 59 cases of anemia due to other causes, from July 1995 to September 1996 in department of family medicine, Pusan Paik hospital. RESULTS: The sex distribution was 39(28.1%) in male, 100(71.9%) in female. The age distribution was 15 to 79 year. The hemoglobin level and MCV in IDA(9.5+/-1.6g/dl, 77.5+/-8.9fl) was significantly lower than those in non-IDA(10.1+/-1.5g/dl, 87.6+/-10.5fl)(P=0.042, P<0.001, respectively). And mean RDW in IDA(16.9+/-3.3%) was significantly higher than that in non-IDA(15.1+/-3.2%)(P<0.001). In discriminating IDA from anemia, we drew receiver operating characteristic curves (ROC curves) with each value of MCV and RDW. The cut-off value of MCV was 83fl, and in that value, the sensitivity and specificity were 75.9% and 72.9%, respectively. The cut-off value of RDW was 14.3%, and the sensitivity and specificity were 78.2% and 57.6 %, respectively. We combined each value of MCV with RDW, the cut off value were 83fl of MCV and 14.3% of RDW, and the sensitivity and specificity were 76.3% and 71.3%, respectively. CONCLUSIONS: The sensitivity and specificity of MCV, RDW and combination of MCV and RDW were not so high in discriminating IDA from the anemia of the other causes in ambulatory patients.
Age Distribution ; Anemia* ; Anemia, Iron-Deficiency ; Blood Cell Count ; Busan ; Female ; Humans ; Iron ; Male ; Outpatients ; ROC Curve ; Sensitivity and Specificity ; Sex Distribution

No abstract available.

PURPOSE: The purpose of this study was to determine the effects of self-esteem improvement program on self-esteem, depression, and interpersonal relationship in chronic schizophrenia patients living in the community. METHODS: The research design was a non-equivalent pre and post control group design. One of two community mental health centers was randomly assigned to receive the intervention and the other served as a control. Eight patients in the intervention group and ten in the control group participated. For the intervention group, the self-esteem improvement program was provided in 60-minute session once a week for 12-weeks. Measurements were Korean version of self-esteem scale (SES-K), Korean version of beck depression inventory (BDI-K), and Korean version of interpersonal relationships (IR-K). RESULTS: The only statistically significant difference between the experimental and control group was for interpersonal relationships. For the experimental group, there were statistically significant differences in self-esteem and interpersonal relationships. CONCLUSION: The results indicate that this type of program has a positive effect on self-esteem and interpersonal relationships and can be a feasible type of intervention program for community dwelling patients with chronic schizophrenia.
Community Mental Health Centers ; Depression* ; Humans ; Research Design ; Schizophrenia*

PURPOSE: The objective of this study was to provide a trend analysis of the prevalence of diabetes relative to the socioeconomic, lifestyle, and physiologic risk factors among Korean adults aged over 30 years for a 10-year period using data from the Korean National Health and Nutrition Examination Survey. METHODS: Prevalence difference and the slope index of inequality were calculated for each risk factors using binomial regression by considering the repeated cross-sectional features of the data. The prevalence ratio and the relative index of inequality were calculated using log-binomial regression. Linear trend tests were performed using SAS 9.2. RESULTS: Crude prevalence of diabetes increased over the 10-year period, and was higher for men than for women. It was very high for adults 60 years or over, consistently increasing over time. The prevalence among unemployed men, women with higher level of stress, women with hypertension, and adults with serum triglyceride levels over 135 mg/dL increased over the 10-year period in comparison with the respective control group. CONCLUSION: Considering the rapid economic development and associated lifestyle changes in Korea, action should be taken to control the prevalence of diabetes by both preventing and consistently monitoring these identified risk factors using a public-health approach.
Adult ; Aged ; Alcohol Drinking ; Asian Continental Ancestry Group ; Body Mass Index ; Cholesterol/blood ; Cross-Sectional Studies ; Diabetes Mellitus, Type 2/*epidemiology/pathology ; Exercise ; Female ; Humans ; Hypertension/epidemiology ; Life Style ; Male ; Middle Aged ; Nutrition Surveys ; Prevalence ; Republic of Korea ; Risk Factors ; Smoking ; Socioeconomic Factors ; Stress, Psychological ; Triglycerides/blood ; Unemployment

Malformations of umbilicus are a feature of many dysmorphic syndromes and the measurement of periumbilical skin length should be considered as the basic step in the description of the umbilical malformations. So, we measured the periumbilical skin length in the 103 normal neonates and obtained the following results. 1) The means (+SD) of the periumbilical skin length were the 11.7mm (+3.0) in the cranial site and the 8.2mm (+2.5) in the caudal site, and the cranial length was 3.5mm longer than the caudal length. 2) No difference was observed between the male and female groups in the periumbilical skin length. 3) Age was the only statistically significant variable associated with the periumbilical skin length and it was observed that the periumbilical skin length decreased according to the advance of age (hour).
Female ; Humans ; Infant, Newborn ; Male ; Reference Values* ; Skin* ; Umbilicus