material after preparation. Crowns were ceTnented onto the teeth using zinc cement, Fuji I, Vitrerner, or C&B Metabond, The samples were thermal-cycled fer 10,OOO cycles, They were then immersed in erythrosine solution, sectioned, and observed under a microscope. Microieakage analyses were performed using a O'4 point system. The data were sLatistica!ly analyzed. There were significant differenc...

Freezing stress is the main factor affecting normal growth and distribution of plants. The safe overwintering a perennial deciduous plant crucial link to ensuring its survival yield. However, little known about molecular mechanism gene regulation metabolites as related freeze-tolerance. In order enhance our comprehension freeze-tolerance expression in dormant apple trees, we examined metabolic ...

background: the present study aimed to determine the prevalence and associated risk factors of vaginal trichomoniasis in women referred to gynecologic clinic in benha university hospital, egypt. methods: two hundred female patients enrolled in the study. vaginal samples were obtained from them and examined for t. vaginalis by wet mount, giemsa stain, acridine orange (ao) stain and culture on mo...

background: microleakage is one of the challenging concerns in direct fi lling restorations. understanding of its related factors is important in clinical practice. the aim of this study was scanning electron microscopy (sem) evaluation of marginal integrity in three types of tooth-colored restorative materials in class v cavity preparations and the effect of load cycling and polishing time on ...

OBJECTIVE Re-examining the well accepted concept that Zinc-Oxide-Eugenol bases (ZOE) have a negative effect on composite restoration materials microhardness, in light of the advancement in composite materials and newer publications. METHODS Five modern composite restoration materials were used, including hybrid (Xtra-fill and Z250), micro-fill hybrid (G-aenial and Gradia-direct) and methacryl...