There continues to be a demand from consumers and patients for products that whiten teeth. These products are generally either peroxide-based bleaching formats to improve intrinsic tooth colour or whitening toothpastes with enhanced physical and chemical cleaning properties to remove and prevent extrinsic tooth stain. Through the understanding of colour science and its application to tooth colour a new approach to tooth whitening is now possible from toothpaste. This is achieved by the deposition of blue covarine onto the tooth surface where it changes the optical properties of the teeth such that their appearance is both measurably and perceivably whiter immediately after treatment. In vitro and in vivo studies confirm the efficacy of this whitening approach in a silica based whitening toothpaste containing blue covarine. In addition, this toothpaste has been shown not to have an undue degree of abrasivity to enamel or dentine compared to other relevant commercially available products, and is an efficacious source of fluoride.
[Show abstract][Hide abstract] ABSTRACT: The aim of the present work is to analyze the standards of marketed cosmetic products which are largely consumed in day to day life of the people. The cosmeceutical should be tested for efficacy to ensure a proven skin benefit and also to substantiate marketing claims. The work was done by keeping the ideas of Bureau of Indian Standards to analyze the cosmetic products. The evaluation for the following cosmetics such as tooth pastes (Colgate, Closeup, Pepsodent, Vicco and Anchor) and face powders (Ponds, Eva, Fa, Cuticura and Spinz) are performed for their quality. All the marketed tooth pastes and face powders which had been evaluated complied with the standards specified by Bureau of Indian Standards. Hence all the selected marketed tooth pastes and selected face powders were found to be of good quality.
[Show abstract][Hide abstract] ABSTRACT: To review and summarise the whitening agents contained within tooth whitening toothpaste formulations, their mode of action in tooth whitening, and the in vitro and clinical methods used to evaluate and demonstrate their efficacy.
Original scientific full papers or reviews listed in ISI Web of Science and Medline were included in this review using the search terms white*, toothpaste and dentifrice.
Due to the reported consumer and patient dissatisfaction with their perceived tooth color, toothpaste manufacturers have responded by developing a vast array of contemporary whitening toothpastes. One of the key functional ingredients in whitening toothpastes is the abrasive system. In general, these have been designed to give effective removal of extrinsic stains and help prevent tooth stains from reforming without undue abrasivity towards the dental hard tissues. Whitening toothpastes may contain additional agents that augment the abrasive cleaning by aiding the removal and/or prevention of extrinsic stains, for examples, peroxide, enzymes, citrate, pyrophosphate and hexametaphosphate, or optical agents such as blue covarine which can improve tooth whiteness following tooth brushing. In vitro methods used to evaluate tooth whitening efficacy typically determine the ability of a toothpaste formulation to remove/prevent model extrinsic stains on substrates such as enamel or hydroxyapatite or changes in the intrinsic color of tooth specimens. Clinical protocols for evaluating the efficacy of whitening toothpastes typically determine either stain removal or prevention, where changes in natural stain or chlorhexidine/tea induced stain are measured typically over 2-6 weeks. In some clinical studies the overall tooth color change was measured using techniques such as Vita shade guides, colorimeters and image analysis of digital photographs of teeth.
[Show abstract][Hide abstract] ABSTRACT: Several mouth rinses promising whiter smiles are on the market today. The aim of this study was to investigate the in vitro color recovery effects of six commercial mouth rinses on a stained universal composite resin. Sixty composite resin specimens were prepared with a universal composite resin (Filtek Z250), and baseline Commission Internationale de l'Eclairage L*a*b* color coordinates were measured by spectrophotometry. Specimens were subjected to two cycles of staining with coffee and cherry juice for 2 weeks, followed by immersion into mouth rinses (Listerine Whitening Vibrant, Scope White, Crest 3D White, Signal White Now, Oral-B 3D White, and Colgate Optic White). Changes in color coordinates were measured after staining and after 24- and 72-hour immersion periods. Color alterations were calculated both by CIEDE2000 and CIELAB formulas. Data were submitted to analysis of variance for repeated measures and Tukey's multiple comparison test. (α = 0.05). Immersion in colorant beverages caused perceptible discolorations on composite resin samples (ΔE00 > 2.25 and ΔEab* > 3.46). Immersion period and mouth rinses were significant factors for the color recovery procedure (p < 0.001). The interaction between immersion time and WMR was also significant (p < 0.001). The color recovery of composite resin was affected by the brand of mouth rinse and the period of immersion. This in vitro study revealed that tested mouth rinses are capable of recovering discolored composite resin colors after a prolonged exposure period.
Journal of Esthetic and Restorative Dentistry 06/2014; 26(4). DOI:10.1111/jerd.12107 · 0.81 Impact Factor
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