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

No abstract available.
Herpes Zoster*

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

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

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

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: Recently, there have been increased esthetic needs for posterior dental restorations. The failure of posterior dental ceramic restoration are possible not only by the characters of the component materials but also by the type of food. PURPOSE: The research aim was to compare the in vitro fracture resistance of simulated first molar crowns fabricated using 4 dental ceramic systems, full-porcelain-occlusal-surfaced PFG, half-porcelain-occlusal-surfaced PFG, Empress 2, Ice Zirkon and selected Korean foods. MATERIAL AND METHODS: Eighty axisymmetric crowns of each system were fabricated to fit a preparation with 1.5- to 2.0-mm occlusal reduction. The center of the occlusal surface on each of 15 specimens per ceramic system was axially loaded to fracture in a Instron 4465, and the maximum load (N) was recorded. Afterwards, selected Korean foods specimens (boiled crab, boiled chicken with bone, boiled beef rib, dried squid, dried anchovy, round candy, walnut shell) were prepared. 15 specimens per each food were placed under the Instron and the maximum fracture loads for them were recorded. The 95% confidence intervals of the characteristic failure load were compared between dental eramic systems and Korean foods. Afterwards, on the basis of previous results, 14Hz cyclic load was applied on the 4 systems of dental ceramic restorations in MTS. The reults were analyzed by analysis of variance and Post Hoc tests. RESULTS: 95% confidence intervals for mean of fracture load 1. full porcelain occlusal surfaced PFG Crown: 2599.3 to 2809.1 N 2. half porcelain occlusal surfaced PFG Crown: 3689.4 to 3819.8 N 3. Ice Zirkon Crown: 1501.2 to 1867.9 N 4. Empress 2 Crown: 803.2 to 1188.5 N 5. boiled crab: 294.1 to 367.9 N 6. boiled chicken with bone: 357.1 to 408.6 N 7. boiled beef rib: 4077.7 to 4356.0 N 8. dried squid: 147.5 to 190.5 N 9. dried anchovy: 35.6 to 46.5 N 10. round candy: 1900.5 to 2615.8 N 11. walnut shell: 85.7 to 373.1 N under cyclic load (14Hz) in MTS, fracture load and masticatory cycles are: 1. full porcelain occlusal surfaced PFG Crown fractured at 95% confidence intervals of 4796.8 - 9321.2 cycles under 2224.8 N (round candy)load, no fracture under smaller loads. 2. half porcelain occlusal surfaced PFG Crown fractured at 95% confidence intervals of 881705.1 - 1143565.7 cycles under 2224.8 N (round candy). no fracture under smaller loads. 3. Ice Zirkon Crown fractured at 95% confidence intervlas of 979993.0 - 1145773.4 cycles under 382.9 N (boiled chicken with bone). no fracture under smaller loads. 4. Empress 2 Crown fractured at 95% confidence intervals of 564.1 - 954.7 cycles under 382.9 N (boiled chicken with bone). no fracture under smaller loads. CONCLUSION: There was a significant difference in fracture resistance between experimental groups. Under single load, Korean foods than can cause fracture to the dental ceramic restorations are boiled beef rib and round candy. Even if there is no fracture under single load, cyclic dynamic load can fracture dental posterior ceramic crowns. Experimental data with 14 Hz dynamic cyclic load are obtained as follows. 1. PFG crown (full porcelain occlusion) was failed after mean 0.03 years under fracture load for round candy (2224.8 N). 2. PFG crown(half porcelain occlusion) was failed after mean 4.1 years under fracture load for round candy (2224.8 N). 3. Ice Zirkon crown was failed after mean 4.3 years under fracture load for boiled chicken with bone (382.9 N). 4. Empress 2 crown was failed after mean 0.003 years under fracture load for boiled chicken with bone (382.9 N).
Candy ; Ceramics ; Chickens ; Crowns ; Decapodiformes ; Dental Porcelain ; Ice ; Juglans ; Lithium Compounds ; Molar ; Ribs

STATEMENT OF PROBLEM: Currently, there are some 20 different geometric variations in implant/abutment interface available. The geometry is important because it is one of the primary determinants of joint strength, joint stability, locational and rotational stability. PURPOSE: As the effects of the various implant-abutment connections and the prosthesis height variation on stress distribution are not yet examined, this study is to focus on the different types of implant-abutment connection and the prosthesis height using three dimensional finite element analysis. MATERIAL AND METHOD: The models were constructed with ITI, 3i TG, Bicon, Frialit-2 fixtures and solid abutment, TG post, Bicon post, EstheticBase abutment respectively. And the superstructures were constructed as mandibular second premolar shapes with 8.5 mm, 11 mm, 13.5 mm of crown height. In each model, 244 N of vertical load and 244 N of 30 degree oblique load were placed on the central pit of an occlusal surface. von Mises stresses were recorded and compared in the crowns, abutments, fixtures. RESULTS: 1. Under the oblique loading, von Mises stresses were larger in the crown, abutment, fixture compared to the vertical loading condition. 2. The stresses were increased proportionally to the crown height under oblique loading but showed little differences with three different crown heights under vertical loading. 3. In the crown, the highest stress areas were loading points under vertical loading, and the finish lines under oblique loading. 4. Under the oblique loading, the higher stresses were located in the fixture/abutment interface of the Bicon and Frialit-2 systems compared to the ITI and TG systems. CONCLUSIONS: The stress distribution patterns of each implant-abutment system had difference among them and adequate crown height/implant ratio was important to reduce the stresses around the implants.
Bicuspid ; Crowns ; Finite Element Analysis* ; Joints ; Prostheses and Implants

STATEMENT OF PROBLEM: Currently, there are some 20 different geometric variations in implant/abutment interface available. The geometry is important because it is one of the primary determinants of joint strength, joint stability, locational and rotational stability. PURPOSE: As the effects of the various implant-abutment connections and the prosthesis height variation on stress distribution are not yet examined, this study is to focus on the different types of implant-abutment connection and the prosthesis height using three dimensional finite element analysis. MATERIAL AND METHOD: The models were constructed with ITI, 3i TG, Bicon, Frialit-2 fixtures and solid abutment, TG post, Bicon post, EstheticBase abutment respectively. And the superstructures were constructed as mandibular second premolar shapes with 8.5 mm, 11 mm, 13.5 mm of crown height. In each model, 244 N of vertical load and 244 N of 30 degree oblique load were placed on the central pit of an occlusal surface. von Mises stresses were recorded and compared in the crowns, abutments, fixtures. RESULTS: 1. Under the oblique loading, von Mises stresses were larger in the crown, abutment, fixture compared to the vertical loading condition. 2. The stresses were increased proportionally to the crown height under oblique loading but showed little differences with three different crown heights under vertical loading. 3. In the crown, the highest stress areas were loading points under vertical loading, and the finish lines under oblique loading. 4. Under the oblique loading, the higher stresses were located in the fixture/abutment interface of the Bicon and Frialit-2 systems compared to the ITI and TG systems. CONCLUSIONS: The stress distribution patterns of each implant-abutment system had difference among them and adequate crown height/implant ratio was important to reduce the stresses around the implants.
Bicuspid ; Crowns ; Finite Element Analysis* ; Joints ; Prostheses and Implants