Chang-Keun Kim

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The goal of this study is to evaluate the hypothesis that the properties of the resin adhesive might affect the microtensile bond strength (MTBS) of multibottle dental adhesive system. In order to alter the properties, the experimental resin adhesives containing 2,2-bis (4-2-hydroxy-3-methacryloyloxypropoxyphenyl)propane (Bis-GMA) and triethylene glycol(More)
A thick oxygen-inhibited layer (OIL) on a cured adhesive layer (AL) is believed to result in both good adaptation of composite resin (CR) and high bond strength. A high degree of conversion (DC) of the AL is also needed for durable bonding. This study evaluated the hypothesis that increasing the DC by prolonging the light-curing time of adhesive bonding(More)
BACKGROUND Microarray technology offers a new opportunity to gain insight into global gene and protein expression profiles in asthma. To identify novel factors produced in the asthmatic airway, we analyzed sputum samples by using a membrane-based human cytokine microarray technology in patients with bronchial asthma (BA). METHODS Induced sputum was(More)
OBJECTIVE To determine whether eosinophil-derived neurotoxin (EDN) is a predictive marker of recurrent wheezing episodes in post-respiratory syncytial virus (RSV) bronchiolitis. METHODS EDN levels and recurrent wheezing episodes were serially measured in 200 infants hospitalized with RSV bronchiolitis. RESULTS Serum EDN levels at 3 months correlated(More)
BACKGROUND Eosinophil numbers and eosinophil cationic protein (ECP) levels have been proposed as markers of disease activity; however, the usefulness of eosinophil-derived neurotoxin (EDN)--another eosinophil granular protein--as a marker in pediatric asthma has not been established. OBJECTIVE The authors compared the concentrations of blood eosinophil(More)
OBJECTIVE To investigate the effect of montelukast on eosinophil degranulation and recurrent wheezing episodes in post-respiratory syncytial virus (RSV) bronchiolitis. STUDY DESIGN Two hundred infants (age, 6-24 months) who were hospitalized with their first episode of acute RSV bronchiolitis were randomized in a double-blind, placebo-controlled, parallel(More)
PURPOSE To evaluate the effect of applied power on dental ceramic bonding of composite resin using nonthermal atmospheric pressure plasma (APP). MATERIALS AND METHODS A pencil-type APP torch was used to modify the surface chemical composition and hydrophilicity of dental ceramic and to improve the adhesion of composite resin to the surface. The effect of(More)
BACKGROUND/PURPOSE Activation of cell surface CD30 by immobilized anti-CD30 monoclonal antibodies (mAb) induces strong apoptosis in human eosinophils. This anti-CD30 mAb-induced eosinophil apoptosis is inhibited by the addition of inhibitors of p38, ERK1/2 mitogen-activated protein kinases, and phosphatidylinositol 3-kinase. However, there is little data(More)
INTRODUCTION Varying clinical progress and long-term pulmonary sequelae have been associated with different adenoviral serotypes. OBJECTIVE The purpose of this study was to determine the association between serotype and clinical profiles of pediatric adenoviral pneumonia cases that occurred in Korea from 1996-1998. METHODS Nasopharyngeal aspirate(More)
The purpose of our study was to investigate whether tumor necrosis factor (TNF)-alpha correlates with eosinophilic inflammation that occurs during a lower respiratory tract infection with the respiratory syncytial virus (RSV) in children. Sixty children with RSV bronchiolitis (RSV group) and 20 healthy children with no respiratory symptoms (Control group)(More)