bleaching agents
Evaluation of surface roughness of resin-based composites submitted to different light-activation protocols and bleaching agents
... ABSTRACT' * This* study* evaluated* the* surface* roughness* (Ra)* of* methacrylate* and* siloraneZbased* composites* submitted* to* different* lightZ activation* protocols* and* bleaching* agents.* The* ...
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Storage Temperature Influences the Carbamide Peroxide Concentration of at Home Bleaching Agents
... tooth bleaching depend on some variables, including the concentration of the active ingredient and the contact time of the product with the tooth surface ...peroxide-based bleaching systems has shown that ...
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Alternative Bleaching Methods for Cheddar Liquid Whey.
... chemical bleaching agents for whey, hydrogen peroxide (HP) and benzoyl peroxide (BP), negatively impact flavor of dried whey ...for bleaching liquid whey: ultraviolet radiation (UV) and ...
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Effective treatments of jojoba and jatropha hulls to obtain phytochemical compounds for industrial, nutritional, and pharmaceutical uses
... Background: In the industry, acid and alkali are used to hydrolyze lignocellulosic materials into cellulose and lignin. The cellulose is to be used in several industries such as the production of bioethanol, in the sugar ...
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Effect of different peroxide bleaching regimens and subsequent remineralization on the hardness of human enamel
... after bleaching treatment with different concentrations of carbamide peroxide, promoted an increase in enamel microhardness, but the baseline values were not ...whitening agents to be used with professional ...
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Patients' desire and previous experience of dental bleaching
... dental bleaching, the office bleaching and home ...rejecting bleaching procedures include post-operative sensitivity and longevity of whitening ...Home bleaching has been believed to have ...
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Effect of Remineralizing Agents on Tooth Color After Home Bleaching
... some bleaching agents, byproducts of protein denaturation ...to bleaching agents, and different concentrations of bleaching agents can cause tooth demineralization and ...
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Evaluation of leakage of bleaching agent through different intraorifice barriers in intracoronal bleaching technique an in vitro study
... Most bleaching agents are oxidizers that act on organic structures of the hard tissues and degrade them into smaller molecules that are lighter in color such as Intracoronal bleaching technique is ...
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Effect of a Combined Bleaching Regimen on the Microhardness of a Sealed Methacrylate-based and a Silorane-based Composite
... the bleaching agents significantly decreased the microhardness of the sealed (in particular) and unsealed methacrylate ...Following bleaching, oxidation reaction can occur in polymer chain of the ...
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The susceptibility of bleached enamel to staining as measured by quantitative light-induced fluorescence (QLF)
... staining of such enamel. The teeth in this study were subjected to a high concentration of hydrogen peroxide for one hour which might not be sufficient to simulate clinical situations were patients are exposed to a ...
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The susceptibility of bleached enamel to staining as measured by quantitative light-induced fluorescence (QLF)
... staining of such enamel. The teeth in this study were subjected to a high concentration of hydrogen peroxide for one hour which might not be sufficient to simulate clinical situations were patients are exposed to a ...
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Sulfuric acid bleaching of kraft pulp 1: Bleaching of hardwood and softwood kraft pulps
... Because the main reac- tions of the acetic acid pulping are ether cleavage reactions, the result shows that the residual lignin in oxygen-bleached kraft pulp contains appreciabl[r] ...
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Reef-scale thermal stress monitoring of coral ecosystems: new 5-km global products from NOAA coral reef watch
... mass bleaching events, SST anomalies occur in-phase or nearly in-phase over a broad area that includes both coral reefs and their adjacent open ocean waters ...of bleaching thermal stress by the 50-km ...
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Recovery of spent bleaching clay for reuse in water treatment
... (3) The comparison between the two-step treatment method (a. Wash spent bleaching clay with hot water; b. Burn the clay in closed system vessel) with the three-step treatment method (a. Extract residual oil from ...
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Bleaching of the post-IR IRSL signal from individual grains of K-feldspar: Implications for single-grain dating
... far, bleaching curves have not been reported for single grains of ...of bleaching rates of feldspars is important for single-grain dating as it has been suggested that the TL signal from different types of ...
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Coral-dwelling fishes resistant to bleaching but not to mortality of host corals
... from bleaching, although corals that recover may suffer from reduced growth, fitness and physiological condi- tion (Jokiel & Coles 1977, Baird & Marshall ...to bleaching among corals can then lead ...
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Biomimetic TCF Bleaching of Pulp by Simple Inorganic Complexes of Cupric/Cobalt Acetate
... The suspension was filtered, and the effluent was discarded. The pulp deionized was bleached with Cat(EP)P sequence. After each bleaching stage, the pulp suspension was diluted with deionized water to a 2.5% pulp ...
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Taxonomic, spatial and temporal patterns of bleaching in anemones inhabited by anemonefishes
... Coral bleaching, so named because affected corals appear bright white, is due to the loss of symbiotic algae and/or symbiont pigments, and usually occurs during elevated sea temperatures and often in association ...
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Extraction and characterisation of cellulose nanocrystals from pineapple peel
... a bleaching process for delignification was carried out for 4-6 ...of bleaching treatment during purification was shown to be more effective than 4 ...
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Clay Characterization and Optimisation of Bleaching Parameters for Palm Kernel Oil Using Alkaline Activated Clays
... adsorption bleaching of ...optimum bleaching efficiency gave NaOHAC an advantage over ...adsorption bleaching which affected the filterability of the oil-clay ...the bleaching parameters (clay ...
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