No abstract available.
Dementia* ; Epidemiologic Studies*

No abstract available.
Fibronectins* ; Staphylococcus aureus* ; Staphylococcus*

Sixty premolars extracted for orthodontic treatment were divided into four groups, and the residual resin was removed with four different rotary finishing instruments at a fixed speed of 18,500+/-300rpm on the low speed handpiece. The instruments were G1; 169L carbide fissure bur, G2; No.2 round bur, G3; No.4 round bur, G4; No.8 round bur. Then, the enamel received a 5-second polishing with a rubber cup and a pumice. To find the extent of loss on the enamel at this point, prophylaxis was done with the rubber cup and a pumice prior to bonding of the bracket(P1) and removal of residual resin by means of appropriate procedure applicable to each resprctive group(P2) followed. The final polishing was done with the rubber cup and pumice(P3), and the enamel surface roughness was measured each by the surface measuring instrument. The whole process was obesrved under a scanning electron microscope to gain the following results : At P2, the enamel surface roughness in G1 showed most smoothly with 2.60+/-0.55microgram; in G2, 3.24+/-0.80microgram; in G3, 3.44+/-0.94microgram; in G4, 3.89+/-0.54microgram, the rougjest. G2 and G3 showed no statistical significance(P>0.05). At P3, the enamel surface roughness in G1 showed most smoothly with 2.29+/-0.47microgram, in G2, 2.44+/-0.56microgram, in G3, 2.44+/-0.58microgram, in G4, 2.92+/-0.43microgram, the roughwst. G1 vs G2, G3, and G2 vs G3 had no statistical significances(P>0.05). In all groups, P2 and P3 showed rougher in surface roughness than P1, and P2 rougher than P3(P<0.01). In a case of 5-second prophylaxis with the rubber cup and the pumice on a virgin, normal enamel. fine scratches were found under the scanning electron microscope. In all four groups, unremovable gouges remained even agter polishing with the rubber and pumice; residual resin was not observed with naked eye when finished with the rubber and pumice, but the resin debris was observed under the scanning electron microscope.
Bicuspid ; Dental Enamel* ; Rubber

PURPOSE: We used MRI to retrospectively analyze the brain of patients suffering from cerebral palsy. Our aim is to determine MRI's role in the assessment of brain damage, the relationship of gestational age. METHODS: A total of 66 patients(29 preform group and 37 term group), who visited Kang-Dong Sacred Heart Hospital from January, 1994 to July, 1998, were enrolled in this study. RESULTS: Among the 29 in the preform group, 13 patients showed MR images of hypoxic ischemic injury in which periventricular leukomalacid(PVL) and multifocal ischemic necrosis in 12(41.3%) and 1(3.4%) respectively. Neuronal migration disorders were 6(20.8%), other congenital malformations 5(17%) and normal MR images 5(17%) in this preform group. Among the 37 in the term group, 22 patients showed MR images of hypoxic ischemic injury in which selective neuronal necrosis were 11(29.7%), PVL 4(10.8%), focal and multifocal ischemic necrosis 4(10.8%) and status marmoratus 3(8.1%). Neuronal migration disorders were 4(10.8%), other congenital malformations 5(13.5%) and normal MR images 6(16.2%) in the term group. CONCLUSION: MRI provided useful information in a majority of children with cerebral palsy. Hypoxic ischemic injury was significantly different in preform and term groups. PVL was frequent in the preterm group and selective neuronal necrosis was statistically common in the term group.
Brain* ; Cerebral Palsy ; Child* ; Gestational Age ; Heart ; Humans ; Magnetic Resonance Imaging* ; Movement Disorders ; Necrosis ; Neuronal Migration Disorders ; Neurons ; Paralysis* ; Retrospective Studies

No abstract available.
Child* ; Humans ; Nevus, Spindle Cell*

No abstract available.
Lung* ; Neoplasm Metastasis* ; Sarcoma* ; Thorax*

Meningioma is usually known to occur stuck to the dura mater, but extradural meningioma occurs rarely. Most of the extradural meningiomas are located in the head and neck and we report a case of the primary intraosseous meningioma in the orbit. A 50-year old woman presented with the left eye hyperemia and exophthalmos. Neuroimaging modalities showed hyperostosis at the left sphenoid and orbital wall. On microscopic view, spindle cells and psammoma bodies between the woven bones were observed. The origin of the intraosseous meningioma is explained with various potent possibilities and differential diagnosis thoroughly explored.
Diagnosis, Differential ; Dura Mater ; Exophthalmos ; Female ; Head ; Humans ; Hyperemia ; Hyperostosis ; Meningioma* ; Middle Aged ; Neck ; Neuroimaging ; Orbit

One of the biggest clinical problems of osseointegrated implant prosthesis is the excessive stress caused by bite forces which are transfered directly into the bone through the osseointegrated implant fixtures. So several biodynamic problems occur when there is an excessive fatigue stress. The factors of stress distribution are the number, kind, position, arrangement of the implants, and the distance between the implants, and the kind, quality of superstructure prosthesis and connection type between the rest implant and the superstructure. Recently, a distal short additional implant, socalled rest implant, is employed to reduced the stresses in conventional cantilevered prostheses. This study was undertaken to analyze the stresses transfered by osseointegrated implant cantilevered prostheses depending upon the number and the position of implants, the presence of rest implant, and the type of their connection. Three dimensional finite element analysis was attempted using ANSIS ver. 5.3 program under IBM INDIGO computer. The results were as follows 1. The rest implant influenced on the pattern of stress distribution on the anterior area of the mandible and the superstructure. 2. In the group employing the rest implants, the fixed type of connection between the rest implant and the superstructure was more stable than the ball attachment type on the stress distribution. 3. In the group employing the ball attachment between the rest implant and the superstructure, the case with 4-implants(on canine, premolar) was little more stable than the case with 6-implants and the case with 4-implants (on incisor, premolar) on the stress distribution. 4. In the cantilevered group, the case with 4-implants(on incisor, premolar) and the case with 6-implants were more stable than the case with 4-implants (on canine, premolar) on the stress distribution. 5. In all of the group, the case with 6-implants and the fixed type of connection was the most stable and the case with 4-implants (on canine, premolar) was the most unstable on the stress distribution.
Bite Force ; Fatigue ; Finite Element Analysis* ; Incisor ; Indigo Carmine ; Mandible ; Prostheses and Implants*

Neonatal Gaves disease is a relatively rare condition due to transplacental passage of Thyroid-stimulating antibody(TSAb) from a mother with active or inactive Graveses disease or autoimmune thyroiditis. A 11-day-old female newborn was referred to our department of pediatrics from a local clinic because of low level T4(3.55microg/dl) concurrent with high level TSH (501.74uIU/ml) on the 5th day neonatal metabolic screening. But, our repeated laboratory data showed very high serum T4(59.6microg/dl), T3(1,600ng/dl), suppressed TSH(0.43uIU/ml), and the presence of TSH receptor antibody. Her mother was treated with propylthiouracil(PTU) for Graves disease during pregnancy. Therefore, we thought it was a delayed-onset neonatal hyperthyroidism, because the fetal thyroid gland was initially suppressed by antithyroid drug taken during pregnancy. After initiating antithyroid drug therapy for the hyperthyroid nature, TSH levels became elevated again, while thyroid hormone levels decreased. Maternal and infant blood samples at the 23th day after birth were examined for serum autoantibodies directed towards the TSH receptor(Thyrotropin-binding inhibitory immunoglobulin:TBII, Thyroid-stimulating antibody:TSAb, Thyroid-stimulating blocking antibody:TSBAb) and high levels of TBII and TSAb were detected. About 2 months after birth, TBII and TSAb decreased within normal limit, and then we could stop antithyroid medication in safety. We report here a case of neonatal Graveses disease with very high level of T4 and T3, but firstly presented as hypothyroid nature on neonatal screening because of the maternally transferred antithyroid drug, PTU.
Autoantibodies ; Drug Therapy ; Female ; Graves Disease ; Humans ; Hyperthyroidism ; Infant ; Infant, Newborn ; Mass Screening ; Mothers ; Neonatal Screening ; Parturition ; Pediatrics ; Pregnancy ; Receptors, Thyrotropin ; Thyroid Gland ; Thyroiditis, Autoimmune

No abstract available.
Abruptio Placentae* ; Female ; Pregnancy