In July 1977 the sociopsychological and medical aspects of prostitution were studied in Songjungli, population over 50, 000, near Kwang-ju city. Most of the prostitutes were helow the age of 28 (80%), had been raised in large families in whic4 female were promiiant and had low levels of education. All of. the girls had their first sexual experience between 15 and 25 with more than half before the age of 19. The first sexual partner was usually a lover, And 45.3% of them became prostitutes within one year of their initial sexual act. Me,inly economic difficulties and family troubles were the major causative factors for turning to prostitution. Most of girls (86%) were practicing contraceptive methods and among them 73% were using oral pills. However, 77% of the girls had become pregnant at least once. A high percentage of the girls (90%) were practicing venereal disease prevention methods and nearly a half of them were practicing douche method immediately after coitus. Among the 115 prostitutes tested, 29 (25. 2%) were VDRL reactive and all VDRL reactive girls were treponema pallidum hemagglutination (TPHA) test positive (100 %).
Coitus ; Contraception ; Education ; Female ; Gwangju ; Hemagglutination ; Humans ; Prostitution ; Sex Workers* ; Sexual Partners ; Sexually Transmitted Diseases ; Syphilis* ; Treponema pallidum

Recently radiation and radioisotope are being used widely in many fields such as medicine and industry. But only a few papers were reported about the radio dermatitis due to industrial use of radiation. Authors experienced 4 cases of occupational radiodermatitis due to Ir-192 occur red during the radioisotope traspierce test. All 4 patients noticed painful swelling, erythema, and bullae on their fingers or palms 1-2 weeks after exposure. All laboratory tests to detect ystemic effects of radiation were normal. Three patients recovered after treatment with systemic and topical corticosteroid and emollient cream for 2-4 weeks. But one patient suffered from complication of fibrosis and recurrent cellulitis on his fingers. We discussed about the working situation of our patients and reviewed the literatures about the radiodermatitis.
Cellulitis ; Dermatitis ; Erythema ; Fibrosis ; Fingers ; Humans ; Radiodermatitis

No abstract available.
Herpes Zoster*

We present here, a case of pemphigus erythematosus developed in a 31-year-old woman, who had been suffering from repeated episode, of remission and exacerbation with several erythematous, and somewhat oozing patche accompanying a mild pruritus or her face, upper part of the back and anterior chest. In serological studies, she had antinuclear antiboc@lies at. a titer of 1:160. Histopathological finding showed subcorneal bullae. Immunofluorescent study revealed IgG and C, deposition in the intercellular space of the epidermis and along the de rmoepidermal junction.
Adult ; Epidermis ; Extracellular Space ; Female ; Fluorescent Antibody Technique ; Humans ; Immunoglobulin G ; Pemphigus* ; Pruritus ; Thorax

STATEMENT OF PROBLEM: Recently Yttrium-stabilized tetragonal zirconia polycrystal (Y-TZP) has been introduced due to superior flexural strength and fracture toughness compared to other dental ceramic systems. Although zirconia has outstanding mechanical properties, the phenomenon of decrease in the life-time of zirconia resulted from degradation in flexural strength after low temperature aging has been reported. PURPOSE: The objective of this study was to investigate degradation of flexural strength of Y-TZP ceramics after various low temperature aging treatments and to evaluate the phase stability and micro-structural change after aging by using X-ray diffraction analysis and a scanning electron microscope (SEM). MATERIAL AND METHODS: Y-TZP blocks of Vita In-Ceram YZ (Vita Zahnfabrik, Bad Sackingen, Germany) were prepared in 40 mm (length) x 4 mm (width) x 3 mm (height) samples. Specimens were artificially aged in distilled water by heat-treatment at a temperature of 75, 100, 125, 150, 175, 200, and 225degrees C for 10 hours, in order to induce the phase transformation at the surface. To measure the mechanical property, the specimens were subjected to a four-point bending test using a universal testing machine (Instron model 3365; Instron, Canton, Mass, USA). In addition, X-ray diffraction analysis (DMAX 2500; Rigaku, Tokyo, Japan) and SEM (Hitachi s4700; Jeol Ltd, Tokyo, Japan) were performed to estimate the phase transformation. The statistical analysis was done using SAS 9.1.3 (SAS institute, USA). The flexural strength data of the experimental groups were analyzed by one-way analysis of variance and to detect statistically significant differences (alpha= .05). RESULTS: The mean flexural strength of sintered Vita In-Ceram YZ without autoclaving was 798 MPa. When applied aging temperature at below 125degrees C for 10 hours, the flexural strength of Vita In-Ceram YZ increased up to 1,161 MPa. However, at above 150degrees C, the flexural strength started to decrease. Although low temperature aging caused the tetragonal-to-monoclinic phase transformation related to temperature, the minimum flexural strength was above 700 MPa. CONCLUSION: The monoclinic phase started to appear after aging treatment above 100degrees C. With the higher aging temperature, the fraction of monoclinic phase increased. The ratio of monoclinic/tetragonal + monoclinic phase reached a plateau value, circa 75% above 175degrees C. The point of monoclinic concentration at which the flexural strength begins to decrease was between 12% and 54%.
Aged ; Aging ; Aluminum Oxide ; Ceramics ; Collodion ; Dental Porcelain ; Electrons ; Humans ; Phenothiazines ; Tokyo ; Water ; X-Ray Diffraction ; Yttrium ; Zirconium

The importance of garlic as a cause of hand eczema has been a matter of debate. Diallyldisulfide is considered as the main allergen in garlic. Twentv two antigens of the modified European standard series and diallyldisulfide of 5%, 2%, 1%, 0.5%, 0.1% in petrolatum were patch tested in 44 patients with hand eczema. Diallylclisi.!lfide was also tested in 13 women as a control. The results were summerized as follows. l. In patch testing with the European standard series, nickel sulfate (22.7%), cobalt chloride (18.2%), fragrance mix (13.6%), balsam of Peru (9.1%) and termerosal (6.8%) were the cornmon allergens which showed positive reactions. The overal positive rate was 59.1 % (26/44). 2.5% diallyldisulfide showed an irritant reaction in 6 (46.2%) out of 13 controls and in 16 (36.4% ) out of 44 patients. 2% diallyldisulfide showed an irritant reaction in 2/13 (15.4 %) in the control group and 6/44 (13.6%) in the patient group. All 13 controls and 44 patients were negative iin tests with diallyldisulfide of 1%, 0.5%, 0.1%. Our results indicate that patch testing with diallyldisulfide of 1% petrolatum is reommended in order to avoid an irritant reaction when contact allergy to garlic is suspetel. 3. Garlic is suspected as an irritant in provoking hand eczema. True contact allergy to garlic in hand eczema seems to be rare.
Allergens ; Cobalt ; Eczema* ; Female ; Garlic* ; Hand* ; Humans ; Hypersensitivity ; Nickel ; Patch Tests ; Peru ; Petrolatum

After amputation of the extremities, many patients developed problematic sequelae such as loss of function, cosmetic point of view, and psychiatric problems. For period of eleven yesrs from 1976 to 1986, we performed amputation of the fingers in 461 persons, and problematic sequelae were noted in 181 cases of 105 persons. The results were as follows : 1. Causes of the amputation were trauma, infection, burn, frost bite, tumors, and vascular diseases in that order of frequency. 2. Problematic sequelae of the fingers were scar contracutre, scanty soft tissue, neuroma, bony spur formation, deformities, hypersensitivity, ulceration, phantom pain, and depression in that order of frequency. 3. Problematic sequelae in amputation of the fingers could be classified as functional, cosmetic and psychiatric problems. In most instances, the primary concern of a particular patient was amputation itself, and this kind of psychiatric problems should be taken into consideration in the treatment of the amputated fingers.
Amputation ; Burns ; Cicatrix ; Congenital Abnormalities ; Depression ; Extremities ; Fingers ; Humans ; Hypersensitivity ; Neuroma ; Phantom Limb ; Ulcer ; Vascular Diseases

STATEMENT OF PROBLEM: Zirconia-based restorations have the common technical complication of delamination, or porcelain chipping, from the zirconia core. Thus the shear bond strength between the zirconia core and the veneering porcelain requires investigation in order to facilitate the material's clinical use. PURPOSE: The purpose of this study was to evaluate the bonding strength of the porcelain veneer to the zirconia core and to other various metal alloys (high noble metal alloy and base metal alloy). MATERIAL AND METHODS: 15 rectangular (4x4x9mm) specimens each of zirconia (Cercon), base metal alloy (Tillite), high noble metal alloy (Degudent H) were fabricated for the shear bond strength test. The veneering porcelain recommended by the manufacturer for each type of material was fired to the core in thickness of 3mm. After firing, the specimens were embedded in the PTFE mold, placed on a mounting jig, and subjected to shear force in a universal testing machine. Load was applied at a crosshead speed of 0.5mm/min until fracture. The average shear strength (MPa) was analyzed with the one-way ANOVA and the Tukey's test (alpha= .05). The fractured specimens were examined using SEM and EDX to determine the failure pattern. RESULTS: The mean shear strength (+/- SD) in MPa was 25.43 (+/- 3.12) in the zirconia group, 35.87 (+/- 4.23) in the base metal group, 38.00 (+/- 5.23) in the high noble metal group. The ANOVA showed a significant difference among groups, and the Tukey's test presented a significant difference between the zirconia group and the metal group. Microscopic examination showed that the failure primarily occurred near the interface with the residual veneering porcelain remaining on the core. CONCLUSION: There was a significant difference between the metal ceramic and zirconia ceramic group in shear bond strength. There was no significant difference between the base metal alloy and the high noble metal alloy.
Ceramics ; Collodion ; Dental Porcelain ; Fires ; Fungi ; Polytetrafluoroethylene ; Shear Strength ; Zirconium

PURPOSE: Marginal fit is a very important factor considering the restoration's long-term success. However, adding porcelain to copings can cause distortion and lead to an inadequate fit which exposes more luting material to the oral environment and causes secondary caries. The purpose of this study was to compare the marginal fit of 2 different all-ceramic crown systems before and after porcelain veneering. This study was also intended to verify the marginal fit of crowns originated from green machining of partially sintered blocks of zirconia (Lava CAD/CAM system) and that of crowns obtained through machining of fully sintered blocks of zirconia (Digident CAD/CAM system). MATERIAL AND METHODS: 20 crowns were made per each system and the marginal fit was evaluated through a light microscope with image processing (Accura 2000) at 50 points that were randomly selected. Each crown was measured twice: the first measurement was done after obtaining a 0.5 mm coping and the second measurement was done after porcelain veneering. The means and standard deviations were calculated and statistical inferences among the 2 groups were made using independent t-test and within the same group through paired t-test. RESULTS: The means and standard deviations of the marginal fit were 61.52 +/- 2.88 micrometer for the Digident CAD/CAM zirconia ceramic crowns before porcelain veneering and 83.15 +/- 3.51 micrometer after porcelain veneering. Lava CAD/CAM zirconia ceramic crowns showed means and standard deviations of 62.22 +/- 1.78 micrometer before porcelain veneering and 82.03 +/- 1.85 micrometer after porcelain veneering. Both groups showed significant differences when analyzing the marginal gaps before and after porcelain veneering within each group. However, no significant differences were found when comparing the marginal gaps of each group before porcelain veneering and after porcelain veneering as well. CONCLUSION: The 2 all-ceramic crown systems showed marginal gaps that were within a reported clinically acceptable range of marginal discrepancy.
Ceramics ; Crowns ; Dental Porcelain ; Light ; Zirconium

No abstract available.
Transplants*