Sung ok Hong

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BACKGROUND The goal of this study is to better understand the trend in epidemiological features and the outcomes of emergency medical service (EMS)-assessed out-of-hospital cardiac arrest (OHCA) according to the community urbanization level: metropolitan, urban, and rural. METHODS This study was performed within a nationwide EMS system with a(More)
In the present study, we report about the efficacy of titanium surface-immobilized with bone morphogenetic protein-2 (BMP-2) via click reaction on enhanced osteogenic differentiation of MC3T3-E1 cells. The surface was characterized by static contact angles and XPS measurements, which indicated that pristine titanium (Ti-1) was successfully surface-modified(More)
OBJECTIVES This study examined whether the extent to which out-of-hospital cardiac arrest (OHCA) patients recover neurological function after therapeutic hypothermia (TH) is augmented in specific gender, age, and primary ECG group. METHODS A cross-sectional analysis was conducted using a nationwide database of OHCAs in Korea which was constructed from(More)
BACKGROUND Diabetes mellitus (DM) and cardiac disease (CD) both likely effect out-of-hospital cardiac arrest (OHCA) survival, but the effect of their relationship on survival outcomes is unclear. This study aims to investigate whether the association of DM and OHCA outcomes differ in patients with and without CD. METHODS The study was conducted from the(More)
BACKGROUND It is unclear whether the benefits of post-resuscitative percutaneous coronary intervention (PCI) are equally observed across out-of-hospital cardiac arrests (OHCAs) with different clinical presentations. The purpose of this study was to assess the effect of PCI in outcomes of OHCA and to compare patient prognosis by history of heart disease (HD)(More)
OBJECTIVE The aim of the study was to compare the effect of conventional maxillomandibular advancement (MMA) and modified MMA with anterior segmental setback osteotomy (MMA-ASSO) on the airway changes in patients with obstructive sleep apnea syndrome (OSAS) using three-dimensional computational fluid dynamics (3D-CFD) analysis. METHODS Two adult male(More)
A 45-year-old female was referred to the Department of Oral and Maxillofacial Surgery with the complaint of pain in the right submandibular region and a dry mouth, which had started one week previously. A clinical examination revealed a swelling and tenderness in the right submandibular region. Panoramic radiography and computed tomography identified a(More)
The objective of this study were to find the annual case trend of inflammatory jawbone diseases and to investigate the impact of medication-related osteonecrosis of the jaws (MRONJ). A retrospective study of 372 patients diagnosed with inflammatory jawbone condition except for alveolar osteitis from 2007 to 2015 was initiated. History taking and(More)
A prominent mandibular angle is considered to be unattractive in Asians because it gives the face a square, coarse, and muscular appearance. Mandibular angle ostectomy has been known to be effective and to satisfy both surgeons and patients. However, a narrow surgical field hinders direct view of the site, making a procedure that is rather difficult to(More)
BACKGROUND This study aims to test the association between capacity of cardiopulmonary resuscitation (CPR) at community level and survival after out-of-hospital cardiac arrest (OHCA). METHODS Emergency medical service (EMS)-treated OHCAs with cardiac etiology in Korea between 2012 and 2013 were analyzed, excluding cases witnessed by EMS providers.(More)