1.A shear bond strength of resin cements bonded to pressable porcelain with various surface treatments.
The Journal of Korean Academy of Prosthodontics 2003;41(3):379-386
STATEMENT OF PROBLEM: Resin cements are widely used in adhesive dentistry specially on all ceramic restorations. It is needed to find out adequate bonding strength between different porcelain surface treatments, commercially available porcelains, and different resin cement systems. PURPOSE: The purpose of this study was to evaluate shear bond strength of resin cements bonded to porcelains in three different modalities; 5 different porcelain surface treatments, 3 different resin cement systems and 3 different commercially available pressable porcelains. MATERIAL AND METHOD: This study consisted of 3 parts. Part I examined the effect of five different surface treatments on the pressable porcelain. Fifty discs (5 mm in diameter and 3 mm in height) of Authentic porcelain were randomly divided into 5 groups (n = 10). The specimens were sanded with 320 grit SiC paper followed by 600 grit SiC paper. The specimens were treated as follow: Group 1-Sandblasting (aluminum oxide) only, Group 2 - sandblasting/silane, Group - sandblasting/acid etching/silane, Group 4 - acid etching only, Group 5 - acid etching/silane. Part II examined the shear bond strength of 3 different resin cement systems (Duolink, Variolink II, Rely X ARC) on acid etching/ silane treated Authentic pressable porcelain. Part 3 examined the shear bond strength of Duolink resin cement on 3 different pressable porcelains (Authentic, Empress I, Finesse). All cemented specimens were stored in distilled water for 2 hours and tested with Ultradent shear bond strength test jig under Universal Instron machine until fracture. An analysis of variance(ANOVA) test was used to evaluate differences in shear bond strength. RESULT: The shear bond strength test resulted in the following: (1) Acid etched porcelains recorded greater shear bond strength values to the sandblasted porcelains. (2) Silane treated porcelains recorded greater shear bond strength values to non-silane treated porcelains. (3) There was no significant difference between sandblasting/acid etching/silane teated and acid etching/silane treated porcelains. However those values were much higher than other three groups. (4) The shear bond strength with Variolink II was lower than the value of Duolink or Rely X ARC. (5) The shear bond strength of Finesse was lower than the value of Authentic or Empress I.
Adhesives
;
Ceramics
;
Dental Porcelain*
;
Dentistry
;
Resin Cements*
;
Silicon Dioxide
;
Water
2.The Effects of Nurse's Communication and Self-Leadership on Nursing Performance.
Sun Im IM ; Jong PARK ; Hye Sook KIM
Korean Journal of Occupational Health Nursing 2012;21(3):274-282
PURPOSE: The study is to investigate the effect of communication and self-leadership on nursing performance. METHODS: The subjects of study were composed of 358 nurses at a G city university hospital, tested with structured questionnaire from September 15 to 30, 2010. The collected data were analyzed with ANOVA, Pearson's correlation coefficients and multiple regression analysis. RESULTS: The level of communication, self-leadership, and nursing performance was 3.37, 3.38 and 3.70 respectively in average. The variables showing significant difference in communication were as follows: age, marital status, religious status, education, monthly income, work department and work experience. Also, the variables in nursing performance were as follows: age, marital status, religious status, education, education, monthly income, position, working department and work experience. Communication, self-leadership and nursing performance of nurse showed significant positive correlation. Nursing performance was positively correlated with monthly income, when it exceeded 2.01 million won, career experience and self-leadership (p<.001). These variables explained 53.7% of the regression model. CONCLUSION: Since monthly income, work experience, communication and self-leadership have positive effect on nursing performance, an effective strategy is required to improve self-leadership and nurse's communication.
Leadership
;
Marital Status
;
Surveys and Questionnaires
3.Tibia Fracture on Removal of Interlocking Medullary Nail: A report of 3 cases.
Bu Hwan KIM ; Jong In IM ; Yong Gyun IM ; Young Jin AHN
The Journal of the Korean Orthopaedic Association 1998;33(7):1952-1956
Interlocking medullary nails have been widely used in the treatment of long bone fractures especially in tibia and femur. But with increasing use of nails, many preoperative, intra-operative and post-operative complications have been reported. We have experienced 3 cases of very rare complication, fracture of tibia shaft which occurred during removal of interlocking medullary nail after complete healing of original tibial fracture. We report these rare complications with literature review.
Femur
;
Fractures, Bone
;
Tibia*
;
Tibial Fractures
4.Impairment Grading in Orthopedic Certificates.
Bu Hwan KIM ; Jong In IM ; Yong Gyun IM ; Young Jin AHN
The Journal of the Korean Orthopaedic Association 1998;33(7):1957-1960
In orthopedic practice, patients sometimes ask certain kinds of medical documents certifying their disability grading. But many orthopedic surgeons are not accustomed to issue such medical certificates. So we want to review the way of evaluation and grading of disabilities for such different kinds of medical certificates(for examples: disability grading certificate for use in traffic accident, industrial accident, liability of national compensation, private insurance, the handicapped, military service and others) and compare the differences between them.
Accidents, Occupational
;
Accidents, Traffic
;
Compensation and Redress
;
Disability Evaluation
;
Disabled Persons
;
Humans
;
Insurance
;
Military Personnel
;
Orthopedics*
5.Radial Neck Fracture with 90° Complete Displacement: Report of 3 Cases
Boo Hwan KIM ; Jong In IM ; Hee Young CHEONG ; Yong Kyun IM
The Journal of the Korean Orthopaedic Association 1995;30(6):1827-1831
Complete fractures of radial neck or proximal radial epiphysis with 90° displacement are very rare, and only several cases were reported in the literatures. We have experienced 2 cases of radial neck fracture with 90° posterior displacement and one case with anterior displacement. All of them were treated operatively. We followed up these 3 cases more than 15 months and report the results with review of literatures.
Child
;
Epiphyses
;
Humans
;
Neck
6.The Distribution of MIC2 Antigen (CD99) Expression on Various Mucosa-Associated Lymphoid Tissue of Human Embryos and Fetuses.
Jung Ran KIM ; Jong Im LEE ; Seong Hoe PARK
Korean Journal of Immunology 1998;20(4):441-442
In the present study, we examined to determine the development of various lymphoid tissue including mucosa-associated lymphoid tissue (MALT), thymus, lymph node and liver. In order to investigate the relationship between the morphological events and the expression pattern of MIC2 antigen (CD99) during the development of lymphoid system, we performed the immunohistochemical study using DN16, a monoclonal antibody against MIC2 (CD99), on formalin-fixed and paraffin-embedded lymphoid sections in 68 human embryos and fetuses, between 5 and 39 gestational week (GW). Four neonates, an infant, and 5 adults are also included. CD99 has been expressed along the membrane of hepatocytes and sinusoidal endothelial cells for 10-28 GW, in when the liver the major site of hematopoiesis. In the thymus, CD99 was firstly detected in the presumptive epitheial cells at 10 GW. When the thymus matured and corticomedullary differentiation appeared, CD99 was exclusively expressed in cortical thymocytes. The CD99 expression in epithelial cells of MALT has initiated at 6 GW and 10 GW earlier than that at the onset of MALT development and its expression has been persisted during MALT formation especially 16-25 GW. The finnding that CD99 antigen was expressed in epithelial cells during the development of MALT rnight provide a means to identify a novel epithelial differentiated substance. In addition, endothelial cells that are present in various organs such as liver and small intestine concurrently expressed CD99 antigen and its expression persisted to late fetal period. This point rnight suggest that CD99 antigen regulate the irnigration of lymphocytes from liver, major hematopoietic organ, to thymus or peripheral lyrnphoid organ via the interaction between endothelial cells and lymphocytes.
Adult
;
Embryonic Structures*
;
Endothelial Cells
;
Epithelial Cells
;
Fetus*
;
Hematopoiesis
;
Hepatocytes
;
Humans*
;
Infant
;
Infant, Newborn
;
Intestine, Small
;
Liver
;
Lymph Nodes
;
Lymphocytes
;
Lymphoid Tissue*
;
Membranes
;
Thymocytes
;
Thymus Gland
7.The Amount of Physical Activity According to the Level of High Density Lipoprotein Cholesterol in Korean Adults.
Jong Im SONG ; Sang Ho YOO ; Jung Gum RYOO
Korean Journal of Health Promotion 2011;11(4):197-205
BACKGROUND: A low level of high-density lipoprotein-cholesterol (HDL-C) is well known as an important cardiovascular risk factor which is closely associated with physical activity levels. However, there is a very few studies conducted on relationship between physical activity and HDL-C status among Korean adults. METHODS: We selected total 22,294 people aged 19 to 69 years old who had not taken lipid lowering agents from the 2005 Korea National Health and Nutrition Examination Survey (NHANES) data. The population was classified into three groups using the criteria for HDL-C of Adult Treatment Panel III. The relationship between the physical activity and HDL-C was investigated and the amount of physical activity levels of the three HDL-C groups were obtained with analysis of covariance with adjustments for various factors influencing the physical activity levels. RESULTS: After adjusted for various factors influencing HDL-C, physical activity is significantly associated with HDL-C. As physical activity is increased, HDL-C is much higher (P<0.001).The physical activity levels were significantly different among the three HDL-C groups. The amount of physical activity in low HDL-C group was significantly low compared to high HDL-C group (1653.08+/-65.31 MET-min/wk vs. 1916.70+/-102.86 MET-min/wk, P<0.001). CONCLUSIONS: We confirmed that the amount of physical activity level in low HDL-C group was significantly lower compared with that of high HDL-C group in Korean adults.
Adult
;
Aged
;
Cardiovascular Diseases
;
Cholesterol
;
Cholesterol, HDL
;
Humans
;
Korea
;
Lipoproteins
;
Motor Activity
;
Nutrition Surveys
;
Risk Factors
8.Effects of Foot Massage on Preoperative Anxiety, Depression and Sleep Pattern in Patients with Breast Surgery.
Journal of Korean Academy of Fundamental Nursing 2005;12(2):240-246
PURPOSE: This study was done to examine the effects of foot massage as a nursing intervention on preoperative anxiety, depression and sleep satisfaction in patients with breast surgery. METHOD: Research design was a nonequivalent control group non-synchronized design. Forty-one patients were assigned to the control group (21) and the experimental group (20). The patients answered a questionnaire containing measures of anxiety, depression and sleep satisfaction before and after the intervention. The collected data were analyzed by means of descriptive statistics, Cronbach's alpha, Chi-square test, and t-test using the SPSS WIN 11.0 program. RESULT: Anxiety and depression for the experimental group were significantly lower than those for the control group(t=2.556, p=0.008, t=2.932, p=0.006). Sleep pattern of the experimental group was significantly higher than that of the control group (t=2.313, p=0.013). CONCLUSION: Judging from these results, it is suggested that foot massage might have beneficial effects on reducing preoperative anxiety, depression, and increasing sleep satisfaction.
Anxiety*
;
Breast*
;
Depression*
;
Foot*
;
Humans
;
Massage*
;
Nursing
;
Preoperative Care
;
Surveys and Questionnaires
;
Research Design
9.A Case Report of Osler-Rendu-Weber Syndrome.
Journal of the Korean Academy of Rehabilitation Medicine 1997;21(4):808-
The Osler-Rendu-Weber syndrome is characterized by multiple telangiectasic lesions usually involving the mucous membranes, face and distal extremities. It is a congenital malformation inherited as an autosomal dominant trait and the lesions usually appear during adulthood. The major symptoms are recurrent epistaxis and gastrointestinal bleeding, but they may cause intracranial hemorrhage at the white matter of the brain stem, cerebellum and diencephalon. We report a case of typical autosomal dominant trait Osler-Rendu-Weber syndrome associated with intracranial hemorrhage at the right basal ganglia.
Basal Ganglia
;
Brain Stem
;
Cerebellum
;
Diencephalon
;
Epistaxis
;
Extremities
;
Hemorrhage
;
Intracranial Hemorrhages
;
Mucous Membrane
;
Stroke
;
Telangiectasia, Hereditary Hemorrhagic
10.Computed tomography of bronchioloalveolar carcinoma showing open bronchus sign
Chung Kie IM ; Jong Chul KIM ; Man Chung HAN
Journal of the Korean Radiological Society 1985;21(3):419-423
Open brochus with diffuse narrowing, stretching, and leafless tree appearance of the bronchi is the well know bronchographic criterior of bronchiloalveolar carcinoma. Though similar findings are expected in CT, authors couldfind no report concerninng the open bronchus sign of bronchioloalveolar carcinoma demonstrated by CT., Authorspresents CT of bronchioloalveolar carcinoma showing lobar or segmental distribution and patent bronchus within thetumor mass.
Adenocarcinoma, Bronchiolo-Alveolar
;
Bronchi
;
Trees