No abstract available.
Osteotomy ; Syphilis, Congenital

No abstract available.
Retrospective Studies ; Surgery, Oral ; Tracheostomy

No abstract available.

No abstract available.
Adipose Tissue ; Surgical Flaps

No abstract available.

A procedure descried by Fontan and Baudet in 1971 successfully bypassed the right ventricle in Tricuspid Atresia patients, after then many modification of the Fontan operation had been described and applied to many cyanotic complex heart patients. Forty patients with a variety of cardiac malformation underwent the Fontan operation at Seoul National University hospital (September 1978 to June 1986). The age at operation ranged 2 months to 18 years. Each number of cases according to basic cardiac anomaly was as follows; 17 in Tricuspid Atresia, 17 in Univertricular Heart, 2 in Double outlet of Right Ventricle, 2 in Transposition of the Great Arteries and 2 in Criss-cross heart. Total mortality rate after the Fontan operation was 50%. There was only one late death (>30 days). Mortality rate under 4 years of age (67%) was higher than that between 4 and 18 years of age (40%). we observed a significantly higher mortality for patients who, in the immediate postoperative period, had central venous pressure greater than 25cm H2O. 45% among survivals did not require further medication. Although mortality rate after the Fontan operation is much higher than that in the foreign literature, operative mortality will decline with the increased expirence of surgeon and the effective patients selection.
Arteries ; Central Venous Pressure ; Crisscross Heart ; Fontan Procedure* ; Heart ; Heart Ventricles ; Humans ; Mortality ; Postoperative Period ; Seoul ; Tricuspid Atresia

This report describes a case of traumatic psuedoaneurysm of the right posterior auricular artery resulting from injury sustained during a fall. The literature describing these rare complications of the scalp injury is also reviewed, and the diagnosis and treatment of this rare case are discussed.
Aneurysm, False* ; Arteries* ; Diagnosis ; Scalp

No abstract available.
Endometrial Neoplasms* ; Female ; Hormone Replacement Therapy*

Platelet-derived growth factor(PDGF) has been shown to play an important role in periodontal regeneration. The purpose of the present study was to examine the distribution of PDGF in experimentally created periodontal intrabony defects after flap surgery with various bone graft materials. Six healthy mongrel dogs were used in this study. Three-wall bony defects were created in maxillary and mandibular premolars, inflammation induced by wire ligation and injection of impression material into the defects. Eight weeks later, the experimental lesions thus obtained were treated by plain flap surgery(control group), flap surgery plus autogenous bone graft(autogenous bone group), flap surgery plus Biocoral graft(Biocoral group), or flap surgery plus bioglass graft(bioglass group), which were randomly assigned to the defects. After 4, 8, and 12 weeks postoperatively, 2 dogs were sacrificed at each time and the specimens were taken for histological examinations and immunohistochemical examinations for PDGF. In the control defects the amount of new bone formation was minimal. In the autogenous bone and Biocoral group new bone was deposited around implanted particles and the amount of new bone was increased with time. A large number of bioglass particles exibited a central excabation and bone formation could be observed in the central excabation as well as around the particles. The expression of PDGF was low in the control group. The expression of PDGF in Biocoral group was increased at 4, 8 week, but decreased at 12 week. The increased PDGF expression in autogenous bone and bioglass group was maintained to the end of the experiment
Animals ; Bicuspid ; Dogs ; Inflammation ; Ligation ; Osteogenesis ; Platelet-Derived Growth Factor* ; Regeneration ; Transplants*

The primary cause of tooth loss after 30 years of age is periodontal disease. Destruction of alveolar bone by periodontal disease is done by bone resorbing activity of osteoclasts. Understanding differentiation and activation mechanism of osteoclasts is essential for controling periodontal disease. The purpose of this study is to identify the possible effects of Vitamin D and cytokines affecting osteoclasts and its precursor cells. Four to six week-old mice were killed and humerus, radius, tibia and femur were removed aseptically and washed two times with Hank's solution containing penicillin-streptomycin and then soft tissue were removed. Bone marrow cells were collected by 22 gauge needle. Cells were cultured in Hank's solution containing 1 mg/ml type II collagenase, 0.05% trypsin, 4mM EDTA. Supernatant solution was removed 5 times after 15 minutes of digestion with above mentioned enzyme solution, and remained bone particles were maintained in alpha-MEM for 15 minutes and 4degrees C temperature. Bone particles were agitated for 1 minute and supernatant solution containing osteoclast precursor cells were filtrated with cell stainer. These separated osteoclast precursor cells were dispensed with 100-mm culture dish by 1x10(7) cells unit and cultured in alpha-MEM containing 20 ng/ml recombinant human M-CSF, 30 ng/ml recombinant human soluble osteoclast differentiation factor and 10% fetal calf serum for 2 and 7 days. Total RNA of osteoclast precursor cells were extracted using RNeasy kit. One microgram of total RNA was reverse transcribed in 42degrees C for 30 minutes using SuperScriptII reverse transcriptase. Expression of transcribed receptors of each hormone and cytokine were traced with 1 microliter of cDNA solution by PCR amplification. Vitamin D receptor was found in cells cultured for 7 days. TNF-alphareceptor was found in cells cultured for 2 days and amount of receptors were increased by 7 days. IL-1 type I receptor was not found in cells cultured 2 and 7 days. But, IL-1 receptor type II was found in cells cultured for 2 days. TGF-alpha,betatype I receptor was found in cells cultured 2 and 7 days, and amount of receptors were increased by 7 days of culture. These results implies Vitamin D and cytokines can affect osteoclasts directly, and affecting period in differentiation cycle of osteoclasts is different by Vitamin D and cytokines.
Animals ; Bone Marrow Cells ; Collagenases ; Cytokines* ; Digestion ; Dihydroergotamine ; DNA, Complementary ; Edetic Acid ; Femur ; Humans ; Humerus ; Interleukin-1 ; Macrophage Colony-Stimulating Factor* ; Mice ; Needles ; Osteoclasts* ; Periodontal Diseases ; Polymerase Chain Reaction ; Radius ; RANK Ligand ; Receptors, Calcitriol ; RNA ; RNA-Directed DNA Polymerase ; Tibia ; Tooth Loss ; Trypsin ; Vitamin D* ; Vitamins*