Sealing properties of a new epoxy resin-based root-canal sealer.

In this study a new epoxy-resin-based endodontic sealer, AH Plus, was tested in vitro for apical leakage. The conventional sealer AH26, for which information is already available, was used as the control. The root canals of 72 single-rooted teeth were prepared biomechanically using a stepback technique before lateral condensation of gutta-percha with one of the two sealers.

[Measuring stress hemodynamics in pulmonary circulation during the inpatient phase after myocardial infarct: a rightfully "forgotten" evaluation?].

Unlabelled: In 123 consecutive patients pulmonary hemodynamics at rest and during exercise were measured 7-10 days after acute myocardial infarction and systemic thrombolysis. Right- and left-heart catheterizations were performed at the same session and repeated after 6 months. We investigated if right-heart catheterization could predict the number of stenotic or occluded coronaries, the angiographic ventricular function and/or, most important, if the patient would profit from revascularization by PTCA or coronary surgery.

Circadian, day-of-week, and seasonal variability in myocardial infarction: comparison between working and retired patients.

The circadian, day-of-week, and seasonal distributions of acute myocardial infarction and its association with the patients' working status were analyzed in a regionally defined population (n = 103, 322) monitored from 1980 to 1988. Included were 2906 consecutive patients (1746 [60.1%] men and 1160 [39.

Effectiveness of two different methods for preparing curved root canals.

In this study, the effect of using two different methods for preparing curved root canals of extracted, single-rooted teeth were analyzed with the scanning electron microscope. The instrumentation systems tested were the Canal Master and a standard circumferential filing technique in which conventional K-files were used. Shaping effectiveness was qualitatively evaluated in terms of respect for conservation of the apical constriction and the presence or absence of ledging, specially in the apical third of the root canals.

[Left ventricular filling behavior in stress-induced myocardial ischemia--correlation between Doppler echocardiography determined transmitral flow profile and pulmonary capillary pressure].

The way Doppler-derived transmitral filling patterns are changed because of myocardial ischemia is controversial. Furthermore, the influence of the filling pressure has not been investigated sufficiently. To evaluate the relationship between transmitral flow profile and pulmonary capillary wedge pressure (PC), 35 patients with exercise-induced myocardial ischemia were examined.