No abstract available.

No abstract available.
Radiopharmaceuticals*

No abstract available.
Avidin*

No abstract available.
Angiomyoma*

No abstract available.
Dermoid Cyst*

The ideal restorative material should mimic the properties of the tissues it replaces. Dental composite resins have been used widely as restorative materials due to its advantages such as excellent esthetics and ease of manipulation. But inadequate wear resistance has been a major factor limiting the use of composite restorative materials. Improved manufacturing techniques have allowed the development of hybrid composites, with a greater percentage volume filler loading, which have improved physical an mechanical properties. However they are lacking the study wear resistance. The purpose of this study was to evaluate the wear of human enamel against ceromer by the use of a pin-on-disk type wear testers. Discs of ceromer(Targis : Ivoclar, Vivadent, Amherst. NY) and discs of type III gold alloy as a control were used for test specimens. Intact cusp of premolar and molar were used for enamel specimens. The wear of enamel was determined by weighing the cusp before and after each test, and the weight converted to volumes by average density of enamel. Surface profilometer was used to quantify wear of the ceromer and gold specimens. Vicker's hardness tester was used to evaluate the surface hardness of test specimens. The SEM was used to evaluate the wear surfaces. The results were as follows; 1. Ceromer produced less enamel wear than gold(p<0.05). 2. The wear volume of ceromer was greater than that of gold(p<0.01). 3. The hardess of ceromer was lower than that of gold, but there was no correlation between the hardness and wear of the ceromer and gold. 4. SEM analysis revealed that there were many voids and microcracks in the wear tract of ceromer. in gold group, many minute V-shaped grooves were examined.
Alloys ; Bicuspid ; Composite Resins ; Dental Enamel* ; Esthetics ; Hardness ; Hardness Tests ; Humans* ; Molar

No abstract available.
Granuloma ; Graphite ; Melanoma

Torsion of a mucocele of the vermiform appendix is an extremely rare condition and also a rare cause of an acute abdomen with a clinical presentation that is indistinguishable from acute appendicitis, and thus, the condition is diagnosed during operation. Here, the authors describe the case of a 78-year-old female, who presented with intermittent abdominal pain. The appendix had a pelvic position and the torsion was counterclockwise. In addition, the torsion was associated with mucocele of the appendix, which was considered a secondary factor of torsion. Appendectomy and drainage were performed.
Abdomen, Acute ; Abdominal Pain ; Aged ; Appendectomy ; Appendicitis ; Appendix ; Drainage ; Female ; Humans ; Mucocele ; Torsion Abnormality

Colloidal gold 198Au were injected into 40 knee joints of rabbits for the study of the change of synovial membrane. We verified even distribution of Colloidal gold 198Au about knee joints by use of scintigraphy. After then, histopathological examinations were performed by periodic intervals. The following results are obtained form this study. l. Intra-articular injection of Colloidal gold 198Au into rabbit's knee joints resulted in a mild resctive inflammation at synovium. In was charscterized by an infiltration of eosinophils and by sclerotic changes in the subsynovium and by fibrosis of synovial vessels. 2. From this study, intra-articular injection of Colloidal gold 198Au may by benefit to treat the chronic synovial effusion in human.
Colloids ; Eosinophils ; Fibrosis ; Gold Colloid ; Humans ; Inflammation ; Injections, Intra-Articular ; Knee Joint ; Rabbits ; Radionuclide Imaging ; Synovial Membrane

In fusion of lumbar spine, every fused motion segments shows varisble limitation of motion in flexion, extension and lateral bending according to their types and level of fusion. The motion segment of lumbar spine is three joint complex which consists of posterior two articular facet joints and an anterior intervertebral disc. Nowadays, orthopedic surgeon prefer anterior fusion due to direct identification and removal of diseased tissue, reduction of fractured fragments, restoration of intrevertebral space, early rehabilitation and no damage of nerve root and cord, and is prefered short Segmental Spinal Instrumentation(e.g. Cotrel Dubousset Instrumentation, etc.) due to short and rigid fusion, no necessity of external support and low limitation of motion. We studied 58 cases of fused lumbar spine which had been operated since Sep.1983, by X-ray overlay method and 20 cases of healthy lumbar spine as eontrol group. In this study, we obtained following results ; 1. Harrington Rod Instrumentation reveals the most remarkable limitation of motion, whereas, C.D.I. and A.I.F. reveal the least limitation of motion. 2. Distinct differencies of motion are repersented by its range of fusion and range of motion in 2 segmental fusion reveals remarkable decreasement from range of motion in single segmental fusion. 3. In single segmental fusion, the most limitation of motion was represented in Harrington Rod Instrumentation and posterior fusion with bone graft. There is remarkable decreasement of flexion at lumbosacral junction by its site of fusion. 4.In double segmental fusion, the most limitation of motion was represented in Harrington Rod Instrumentation and there is no significant difference of motion by its site of fusion.
Intervertebral Disc ; Joints ; Methods ; Orthopedics ; Range of Motion, Articular ; Rehabilitation ; Spine ; Transplants ; Zygapophyseal Joint