No abstract available.
Denture, Partial, Fixed*

Fractures of the tibial shaft are the most common among the long bone fractures, and have much difficulty in treatment due to their enumerous complications. 21 patients with fracture of the tibial shaft were treated with Ender nails under the image intensifier at the Department of Orthopedic Surgery, Yeungnam University Hospital from December 1986 to September 1988. The result was sumarized as follows :1. The average age was 37.3 and the number of male was three times of the female. The most common cause was traffic accident. 2. 14 cases out of 22 were closed fracture and the remsining 5 were open. The comminuted and segmental fractures were 17(77.3%) and the most common fracture site was middle one third. 3. Aversge interval from injury to operation was 6.5 days and in 15 cases show the associated injurues. 4. The mean duration of the bone union was 17.6 weeks and in 2 cases show the delayd union. 5. 10 complications were noted such as shortening, varus deformity, delayed union, ankle motion limitation, nail irritation, and soft tissue infection.
Accidents, Traffic ; Ankle ; Congenital Abnormalities ; Female ; Fractures, Bone ; Fractures, Closed ; Humans ; Male ; Orthopedics ; Soft Tissue Infections ; Tibia

With the recent development of tumor prosthesis, limb salvage technique has attributed to the preservation of the limb function in patients with malignant bone tumors around the knee without substantial difference of local recurrence and the survival rate. From Feb., 1991 to Sep., 1992, 9 patients were treated with limb salvage operation with total knee arthroplasty due to the malignant bone tumor around the knee at Dept. of Orthopedic Surgery, Kyungpook National University Hospital. We applied the above procedure mainly to young adult whose tumor was expected to be excised wide marginally without damaging major neurovascular structures. We evaluated the functional status of all 9 patients(4 osteosarcoma, 2 chodrosarcoma, 2 malignant fibrohistiocytoma, 1 malignant giant cell tumor) to estimate the efficacy of limb salvage operation with tumor prosthesis total knee arthroplasty. Mean follow up period was 10 months. Primary tumor site was 4 in distal femur, 5 in proximal tibia and stage was 4 IIa, 5 IIb. Range of the motion of knee is maximum 0°
Arthroplasty ; Arthroplasty, Replacement, Knee ; Artificial Limbs ; Extremities ; Femur ; Follow-Up Studies ; Giant Cells ; Gyeongsangbuk-do ; Humans ; Knee ; Limb Salvage ; Methods ; Orthopedics ; Osteosarcoma ; Prostheses and Implants ; Recurrence ; Survival Rate ; Tibia ; Young Adult

No abstract available.
Hypopigmentation* ; Mosaicism ; Turner Syndrome*

No abstract available.
Child* ; Humans ; Neurilemmoma* ; Neurofibromatosis 1

No abstract available.
Trichosporon*

To examine AZT resistance of HIV-1 isolates from AZT treated or untreated Korean, several biological characteristics such as syncytium formation, HIV-1 reverse transcriptase activity and the p24 antigen production in MT-2 cells infected with 4 HRT_1 isolates were determined. As controls, we tested HIV-1 HTLV-IIIB and pre-drug isolate as AZT susceptible strains, in addition to HIV-1 RTMC/MT-2 and post-drug isolate as AZT resistant strains. When the inoculum size of HIV-1 was 300 TCID50well and 100 TCID50/well, the AZT susceptibility of AZT untreated HIV-1 isolates 8806 and 9571 were similar to that of HIV-1 HTLV-IIIB and AZT-susceptible HIV-1 strains. When we evaluated AZT resistance of isolates HRs-1 8812 and 9113 treated with AZT for 36 months by observation of syncytium formation, HIV-1 8812 showed resistance simillar to that of HIV-1 RTMC/MT-2 strain forming syncytium up to AZT 1microgram/ml, and HIV-1 9113 showed resistance identical with that of AZT-resistant HIV-1 strain which formed syncytium up to AZT 10 microgram/ml. Especially, when we evaluated AZT resistance by HIV-1 reverse transcriptase activty and the p24 antigen production, HIV-1 isolates 8812 and 9113 showed much higher resistance (>10 - 200 fold) compared with HN-1 RTMC/MT-2 and AZT-resistant HIV-1 strain.
Giant Cells ; HIV-1* ; Korea* ; Population Characteristics ; RNA-Directed DNA Polymerase ; Zidovudine*

No abstract available.
Fistula*

Indirect composite resin are used as an popular effective esthetic material in prosthetic dentistry, often with metallic substructure that provides support for restorations. Recently, new indirect composite resins as a substitute of ceramic have been developed. These resins provide good esthetics, with a wide range of hue and chroma. And the flexural strength of those is in the range of 120-150MPa, which is higher than that of feldspathic ceramic, and similar tot hat of Dicor. Although it has many merits, one of the major clinical problems of composite resins is the bond failure between metal and resin due to insufficient interfacial bond strength. The purpose of this study was to evaluate shear bond strength of the reinforced indirect composite resin to dental alloys. Three different composite resin systems(Artglass . Sculpture , Targis ) as test groups and ceramic(VMK 68 ) as control group were bonded to Ni-Cr-Be alloy(Rexillium III ) and gold alloy(Dave 4). All specimens were stored at 37degrees C distilled water for 24 hours and the half of specimens were thermocycled 2000 times at temperature from 5degrees C to 60degrees C. The shear bond strengths of reinforced indirect composite resins to dental alloys were measured by using the universal testing machine, and modes of debonding were observed by stereoscope and scanning electron microscope. The results were as follows : 1. The shear bond strengths of reinforced indirect composit resins to dental alloys were approximately half those of ceramic to dental alloys(P<0.01). 2. There was no significant difference between the shear bond strength of several reinforced indirect composite resins to metal. 3. Alloy type did not affect on the shear bond strengths of resin to metal, but the shear bond strengths of ceramic to gold alloys were higher than those of ceramic to Ni-Cr alloys(P<0.05). 4. The shear bond strenghts of Artglass and Targis to gold alloys were significantly decreased after thermocycling treatment(P<0.01). 5. Sculpture showed cohesive, adhesive, and mixed failure modes, but Artglass and Targis showed adhesive or mixed failures. And ceramic showed cohesive and mixed failures.
Adhesives ; Alloys ; Ceramics ; Composite Resins* ; Dental Alloys* ; Dentistry ; Esthetics ; Gold Alloys ; Sculpture ; Water

Competition will usually develop between the opposing walls as the restorative resin shrinks during polymerization. Magnitude of this phenomenon may be depended upon cavity configuration and volume. The purpose of this sturdy was to evaluate the effect of cavity configuration and volume on microleakage of composite resin restoration that has margins on the enamel site only. The labial enamel of forty bovine teeth was ground using a model trimmer to expose a flat enamel surface. Four groups with cylindrical cavities were defined, according to volume and configuration factor (Depth x Diameter / C-factor) - Group I: 1.5 mm x 2.0 mm / 4.0, Group II: 1.5 mm x 6.0 mm / 2.0, Group III: 2.0 mm x 1.72 mm / 5.62, Group IV: 2.0 mm x 5.23 mm / 2.54. After treating with fifth-generation one-bottle adhesive - BC Plus(TM) (Vericom, AnYang, Korea), cavities were bulk filled with microhybrid composite resin - Denfill(TM) (Vericom). Teeth were stored in distilled water for one day at room temperature and were finished and polished with Sof-Lex system. Specimens were thermocycled 500 times between 5degrees C and 55degrees C for 30 second at each temperature. Teeth were isolated with two layers of nail varnish except the restoration surface and 1 mm surrounding margins. Electrical conductivity (microA) was recorded in distilled water by electrochemical method. Microleakage scores were compared and analyzed using two-way ANOVA at 95% level. The results were as follows: 1. Small cavity volume showed lower microleakage score than large one, however, there was no statistically significant difference. 2. There was no relationship between cavity configuration and microleakage. Factors of cavity configuration and volume did not affect on microleakage of resin restorations with enamel margins only.
Adhesives ; Dental Enamel* ; Electric Conductivity ; Gyeonggi-do ; Paint ; Polymerization ; Polymers ; Tooth ; Water