Dental restorations need to reproduce the aspect of natural teeth patient, and must be non-toxic, biocompatible, have good mechanical properties so that they can last for longer. The aim this study was determine extent bacterial adhesion Streptococcus mutans on four different dental material surfaces, i.e., two glass–ionomer cements (Fuji conventional Fuji hybrid) ceramic composites (Micro hybr...

Objective: To investigate the repair bond strength of fresh and aged nanohybrid and hybrid composite resins using a universal adhesive (UA). Materials and methods: Fresh and aged substrates were prepared using two nanohybrid (Venus Pearl, Heraus Kulzer; Filtek Supreme XTE, 3 M ESPE) and one hybrid (Z100, 3 M ESPE) composite resin, and randomly assigned to different surface treatments: (1) no tr...

It is well known that certain diseases can be transmitted through contact with contaminated surfaces. Due to the structural characteristics and composition, textile products are favorable media for retention, growth, propagation of pathogens, making them potential vehicles contamination. The current health humanitarian crises have highlighted urgent task exploring effective antimicrobial agents...

Binary nano-composites of Pt and nano-carbon (NC) and Pt and multiwalled carbon nanotube (MWCNT) have been prepared with varied compositions ranging between 20 and 80wt% Pt and investigated them as electrocatalysts for methanol oxidation. The study shows that with the increase in wt% of NC, the apparent electro-catalytic activity of the composite catalyst increases initially, reaches maximum at...

This work aims to define the microstructure and study mechanical properties of an Al matrix incorporated with various amounts Fe2O3 (3, 6, 9, 12 15 wt.%) a constant amount Ag at 1 wt.%. Al/Fe2O3 + hybrid nano-composite samples are manufactured using powder metallurgy. An aluminum is considered important alloy, owing its such as being lightweight, strong corrosion wear resistant, which enable it...

It is reported that the ductility and strength of a metal matrix composite could be concurrently improved if the reinforcing particles were of the size of nanometers and distributed uniformly. In this paper, we revealed that gas atomization solidification could effectively disperse TiB2 nanoparticles in the Al alloy matrix due to its fast cooling rate and the coherent orientation relationship b...

BACKGROUND When a light cure composite resin is used to restore a class V lesion, certain stresses are generated at the tooth-restoration interface. If these stresses exceed the bond strength of the restorative material, microscopic gaps are formed which eventually cause micro-leakage at the tooth-restoration interface. The objective of the present study was to compare the micro-leakage values ...