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White smile - the dream of many people, as it is an indispensable element disposing smile and attractive appearance. philips sonicare diamondclean But unfortunately, many people philips sonicare diamondclean have teeth or yellow philips sonicare diamondclean on the nature of, or under the influence of external factors become so. You can whiten your teeth not only in dentistry, philips sonicare diamondclean but also at home using whitening toothpaste. Whitening toothpastes are not only smell, taste and color, but the composition. These pastes can be divided into two groups: the content of bleaching chemicals and paste having high abrasiveness. Toothpastes first group contain in their composition the strong oxidants (hydrogen peroxide, or urea). These substances, philips sonicare diamondclean getting on tooth enamel, actively produce oxygen free radicals. As a result, pigments (through which the enamel becomes yellow) are oxidized and become colorless as the teeth become white. philips sonicare diamondclean The advantage of such pastes is a quick result. But these positions pretty quickly destroy tooth enamel. Therefore, the use of toothpaste containing bleaching chemicals should be only after consultation with the dentist and under his control. Toothpastes with a high content of abrasives are recommended for intensive cleansing pigmented enamel in smokers, people abusing coffee and strong tea. These pastes philips sonicare diamondclean contain abrasives incorporating: dicalcium philips sonicare diamondclean phosphate, silica, or alumina. These substances may range from 20 to 40 percent of the total volume of the toothpaste. Abrasives remove plaque from the tooth enamel using physical effects, like sandpaper. As a result, the teeth become whiter. But clearing the plaque, they cleared the top layer of enamel. Also, such posts enamel damage (resulting in teeth become sensitive), they also have a negative impact philips sonicare diamondclean on the gums. Most of all sold whitening pastes, fall into this group. The size of the abrasive particles is index RDA. Pasta with RDA above 250, experts do not recommend using more than two times a week.
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