Bleaching effect of gels with different thickeners and mineral
The pH was adjusted to 7. The SC of the Ca and P salts, in the composition of the bleaching gel with the different thickeners and the SL of the Ca and P salts were determined. A total of 360 circular specimens obtained from bovine incisor teeth were Abstract. A bleaching agent is a material that lightens or whitens a substrate through chemical reaction. The bleaching reactions usually involve oxidative or Bleaching Agents Farr Major Reference Works Wiley
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Effects of experimental bleaching agents on the mineral
In-office bleaching has been extensively performed clinically due to the fast whitening promoted by the higher concentrations of hydrogen peroxide (HP) in one single Highest whiteness index (92.26 ± 0.21) was observed for autoclaved bone bio-calcium when hydrogen peroxide alone was used as bleaching agent. FTIR study Preheat-Treatment and Bleaching Agents Affect Springer
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A novel tooth bleaching gel based on
It indicated the new PMS bleaching system not only had the therapeutic effect equivalent to 38% commercial HP gel, but also showed better maintenance of Bleaching agents are formulations that whiten or lighten a substrate by solubilizing color-producing substances or by altering their light-absorbing properties. Bleaching agents Bleaching Agent an overview ScienceDirect Topics
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Bleaching Agent an overview ScienceDirect Topics
Perborate as a bleaching agent in detergents may be replaced by sodium percarbonate, and in soaps by sodium and potassium salts of fatty acids (US Geological Survey, 2019).In Oxide-reduction reaction of the bleaching agent can lead to solving of organic and mineral matrices to the extent that only carbon dioxide (CO 2) and water Effect of Remineralizing Agents on Tooth Color after Home Bleaching
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The impact of remineralization agents on dental bleaching
Abstract. This study evaluated the effect of remineralization agents on bleaching efficiency, enamel mineral changes, and post-bleaching color stability. A total Since bleaching agents may change the value of the enamel visibly, many studies showed a satisfactory camouflage effect of bleaching agents on post orthodontic Effects of Different Bleaching Agents on the Surface
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Predicting the whiteness index of cotton fabric with a least
The textile bleaching process that involves hot hydrogen peroxide (H2O2) solution is commonly practised in cotton fabric manufacture. The purpose of the bleaching process is to remove color from the cotton, achieving a permanent white before proceeding to dyeing or shape matching. Normally, the visual ratings of whiteness on the cotton are Susceptibility of Enamel Treated with Bleaching Agents to Mineral Loss the demand of white teeth has brought the concentrations of bleaching agent increase.bleaching agents to improve whiteness in minerals
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Effects of At-Home and In-Office Bleaching
The aim of this study was to evaluate the effects of at-home and in-office bleaching agents on esthetic CAD-CAM materials after red wine immersion by measuring their optical properties. Sixty Objectives The aim of this study was to evaluate the mineral content, expressed by calcium (Ca) and phosphate (P), in dental enamel exposed to bleaching agents using micro-computed tomography(PDF) Effect of Post-bleaching Surface Microroughness with Whiteness
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Europäisches Patentamt *EP001146089A1*
EP 1 146 089 A1 5 10 15 20 25 30 35 40 45 50 55 2 Description BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The invention relates to improved methods for bleaching kaolin clay and other minerals. More particularly, methods of the present invention employ a hydrosulfite or bisulfite material and a second A high temperature 80º-90 °C & alkaline pH −11 for bleaching provide efficient results (Anis et al., 2009, Farooq et al., 2013, Ramadan, 2008, Tzanov et al., 2001) and the assistance of ultrasound energy also improve fabric whiteness due to increased enzyme reaction (Davulcu et al., 2014).Developments in application of enzymes for textile processing
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Peracetic acid and its use in fibre bleaching Request PDF
The main advantage of bleaching with PAA is that a satisfactory degree of whiteness is obtained at 50 -70 ° C and at a pH value of around 7 with no addition of auxiliary agents.Background: Dental aesthetic procedures aim to rectify flaws in dental elements’ shape, alignment, or overly dark color. One of the most common dental aesthetic procedures is tooth whitening. This study attempts to introduce key aspects of bleaching and describe the different techniques and the mechanism of action of bleaching agents, Efficacy of Carbamide and Hydrogen Peroxide Tooth Bleaching
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Bleaching Agents Farr Major Reference Works Wiley
A bleaching agent is a material that lightens or whitens a substrate through chemical reaction. The bleaching reactions usually involve oxidative or reductive processes that degrade color systems. These processes may involve the destruction or modification of chromophoric groups in the substrate as well as the degradation of color bodies intoThe present study reports on the development and testing of novel bleaching agents containing co-doped metaloxide nanoparticles (NP; 0%, 5%, 10% v/w) and hydrogen peroxide (HP, 0%, 6%, 15%, and 35%). Bovine blocks (n = 200, A = 36 mm2) were obtained and randomly distributed into experimental groups (n = 10/group). NPs Nanomaterials Free Full-Text Novel Experimental In-Office Bleaching
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The effect of oxidative bleaching treatment on Yucca fiber
In the present study, natural cellulose fibers were extracted from the Yucca leaves, and the effect of oxidative treatment on the properties of fibers was studied. The effect of bleaching parameters on the morphology and physical properties of a cellulose fiber called the Yucca fiber was investigated using Taguchi’s experimental design (L27 Throughout history, ubiquitous bleaching practices were carried out in direct sunlight because it became apparent that the sun had a catalytic effect. In the past, bleaching agents had been identified as indigenous acids, bases, and mineral salts. They were applied as soaks and sours to achieve high whiteness levels.The whitening of textiles SpringerLink
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Improving the whiteness and photostability of wool
To further improve its whiteness, wool can be treated with a fluorescent whitening agent (FWA) either after oxidative bleaching or by including the FWA in the reductive bleaching bath. FWA-treated wool absorbs UV light and emits blue fluorescence, which makes it appear much whiter than bleached wool.Objectives The aim of this study was to evaluate the effects of in-office and at-home bleaching agent applications on the surface topography and microhardness of artificially demineralized enamel.. Materials and Methods A total of 224 enamel specimens were prepared using bovine sound central incisors. 4 mm × 4 mm enamel windows were Effects of Different Bleaching Agents on the Surface
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Ozone: An Alternative Oxidant for Textile Applications
It is stated that bleaching processes combined with ozone gas led to increase in whiteness and hydrophilicity values and provided less fiber deformation . Wang et al. (2016) conducted ozonation at different time periods to improve the surface properties of protective aramid fibers used as reinforcing materials in high-performance composites.A bleaching agent could be regarded as efficient if it produces a whiteness variation above the threshold of acceptability (WAT = 2.62 WI D units) [20], [25]. In order to objectively reflect whitening effect of PMS gel, we selected commonly used 38%HP gel (Opalescent Boost, Ultradent, South Jordan, USA) in clinical practice for a series ofA novel tooth bleaching gel based on
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(PDF) Investigation of Alternative Ecologic Bleaching
Peracetic acid is formed of the balanced mixture of acetic acid, hydrogen peroxide, and peracetic. acid. It has been used in the bleaching of textile fibers such as nylon, viscous, rayon cellulosef) Bleaching Bleaching is done to remove the natural colouring matter present in the cloth or yarn in order to obtain high degree of whiteness and uniform appearance of the fabric. BleachedCotton Fabric Pre-treatment Processes for Better
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Comparison of laser and power bleaching techniques in
Both techniques were able to increase whiteness and decrease yellowness ratio of the samples. ΔE decrease for laser bleaching and power bleaching groups were 3.05 and 1.67, respectively. Tooth color change in laser bleaching group was 1.88 times more than that of power bleaching group ( p <0.001).SUMMARY The aim of this study was to compare the effectiveness of and tooth sensitivity to 10% and 20% carbamide peroxide (CP) home-use bleaching agents and 35% and 38% hydrogen peroxide (HP) inEfficacy and Safety of Bleaching Gels According to
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