introduction: the purpose of this study was to evaluate the morphologic surface of gutta­percha cones after cutting with different methods. materials and methods: the apical 3 millimeters of forty standardized, gutta-percha cones size 40 were cut off using scissors or a scalpel against a glass slab. the samples were then examined under scanning electron microscopy (sem) for topographic deformit...

OBJECTIVES We sought to determine the prognostic accuracy of electron beam computed tomographic (EBCT) scanning of the coronary arteries at three to four years. BACKGROUND Coronary artery calcium scores determined by EBCT correlate with the severity of coronary artery disease. However, previous reports of the prognostic accuracy of EBCT scanning for coronary events in asymptomatic individuals...

BACKGROUND Oral administration of spironolactone improves cardiac remodeling and its central infusion prevents the increase in sympathetic drive post-myocardial infarction (MI). We hypothesized that central actions of aldosterone contribute to cardiac remodeling post-MI. OBJECTIVE To compare the effects of intracerebroventricular (icv) infusion and oral administration of spironolactone on car...

The aim of the study is to determine the angiogenesis effect of Astragalus membranaceus extract (AME) on myocardium of rats with MI in vivo and to study its possible mechanisms involved in vascular endothelial growth factors (VEGF), cluster of differentiation 34 (CD34) and endothelial nitric oxide synthase (eNOS). A Sprague-Dawley rat model of MI was established by ligation of the left anterior...