Aim: The aim of this in vitro study is to evaluate the change in color and shear bond strength of enamel bleached with different concentrations of carbamide peroxide and green tea extract solution. Materials and Methods: The specimens are grouped as follows:Group –A: 16 % carbamide peroxide,Group –B: 16% carbamide peroxide & green tea extract, Group –C: 21% carbamide peroxide, Group -D: 21% car...

INTRODUCTION The present study evaluated the element distribution in completely set calcium-enriched mixture (CEM) cement after application of 35% carbamide peroxide, 40% hydrogen peroxide and sodium perborate as commercial bleaching agents using an energy-dispersive x-ray microanalysis (EDX) system. The surface structure was also observed using the scanning electron microscope (SEM). METHODS...

OBJECTIVES The aim of the present study was to determine the alteration in human enamel after hydrogen peroxide treatment using FT-IR spectroscopy. It is hypothesized that infrared spectroscopy is capable of showing alterations in human enamel after peroxide treatment and the alteration in enamel is proportional to peroxide concentration. METHODS The effects of 10, 20 and 30% hydrogen peroxid...

An automated sensor system for the continuous and in-line measurement of hydrogen peroxide in industrial applications is described. The hydrogen peroxide concentration can be measured over the entire pH range, over a wide concentration range of hydrogen peroxide (10(-3) 70 g/l), from 0 to 70( degrees )C, and with high precision and accuracy (errors less than 1% ). The system consists of a bypas...

2 V. V. Voevodsky, Informal discussion of the Faraday Society, Sheffield University, Sheffield (England), September 4-5, 1958, p. 25. 3N. Bach, "Oxygen and Peroxide Effects in Organic Liquids"; J. Weiss, "Oxygen and Peroxide Effects in Aqueous Solutions"; M. Magat, "Oxygen and Peroxide Effects on Organic Solids," papers read at the International Congress of Radiation Research, Burlington, Vermo...

Nanorods were decorated with different hemeproteins that are able to convert hydrogen peroxide. When dispersed into hydrogen peroxide solutions, most of these nanorods are characterized by diffusion coefficients which increase with the concentration of hydrogen peroxide. Such a behaviour does not characterize unmodified nanorods.