Whitening Strips are for chemical teeth whitening at home. The Whitening effect is due to hydrogen peroxide, which is applied in the Form of a gel on the inner surface of the strip. Their advantages are ease of application, good efficacy, but also a lot more affordable price compared to whitening at the dentist.
Strips for whitening of the teeth is a good Marketing products. You can't go to the dentist. It is much cheaper than in the clinic. But why, then, the whitening strips for the teeth guest reviews sufficiently large part of the patients – still far from enthusiastic? In this article, we describe not only the unconditioned, prior to its application, but also the problems they might be facing.
Most systems for home tooth whitening contain as the active component, hydrogen peroxide or carbamide peroxide. Different types of strip cross containing different concentrations of hydrogen peroxide from 9.5 to 14% (on each type of strip Crest, we report in more detail below).
Solutions of hydrogen peroxide and carbamide peroxide, in the situation with prolonged exposure, deep in the tissue of the tooth – the whole thickness of the enamel and Dentin. By the ingress of these compounds peroxides decompose with the formation of free radicals (active oxygen). Just free radicals and lead to the destruction of the molecules of chromogenic substances, the the teeth and give pigmentation.
However, free radicals are decomposition of stable compounds, and fast. So the effect of the bleaching peroxide of hydrogen must be in contact with the teeth for a long time, and you also need to have enough to support his concentration. The lower the concentration of hydrogen peroxide in the composition of the strip is, the longer you need to use to achieve the desired effect.
The strip Transverse to the bleaching of the teeth is available in 6 different variants. They differ by the different concentrations of hydrogen peroxide, the number of strips in the packaging, as well as the exposure time of the strip on the teeth. One of the variants of the strip is also the source of a special light, which, apparently, must convey to the consumer the Illusion of similarity of this product with professional systems "Laser" bleaching.
But that is what is really important is the fact that different types of strips in different ways to the teeth. Some of them can be glued to glide over the teeth and bad. In the selection of Strips, Crest – make sure that there is the technology Advanced Seal® (allows the strips stick to the teeth and do not slip on it). Otherwise, the strip in contact with the whitening Gel to the surface of the tooth enamel will be removed and not tight.
If you have uneven teeth or overcrowding of the teeth, a pronounced tendency of some teeth – in the good adaptation of the strip on all surfaces of the teeth receive FlexFit technology®. In this case, the strip is a little elastic (stretched), so that a better adaptation to uneven surfaces of the teeth, or uneven shape of the teeth. This technology Landscape is only the strip. If the strips are loosely positioned on any surfaces, in these areas, the teeth remain dark.
Please note that there are several options, it is recommended to the strips with the same concentration of hydrogen peroxide in the 10%–, at different times. Where the exposure time strips of 30 minutes of Bleaching is to 3-4 tones, where 60 minutes – about 6-8 shades. In our opinion, the company is a manufacturer intentionally the same strip recommends, in essence – at different times, this does not happen, that the cheaper strips are just as effective as the more expensive.
In General, the effectiveness of the whitening strips can be very high, and, under certain favorable conditions (smooth tooth-rows, no pigment spots on the teeth, Plaque and Tartar removal, etc.) – the effect of such therapy at home almost can not distinguish from the results of professional whitening at the dentist. However, before you buy Whitening Strips on the teeth, to make them also with their weaknesses, of which we will tell you more.
Chemical bleaching only the substances of the tooth can brighten. Fillings, Veneers, all types of artificial crowns can not be lightened. This means that if one or more of the teeth have fillings or crowns after whitening you teeth even darker look on the background of bright enamel remaining. Teeth whitening in such situations, the need would mean a replacement of Veneers, crowns and fillings – on the lighter shades.
Also to take into account is to darken after a few months, the teeth gradually start again (speed of the teeth to darken after bleaching is to your habits, for example, from Smoking, from the frequency of the consumption of staining beverages and foods). And that could mean, or the need for a new replacement fillings, Veneers or crowns, or ongoing periodic courses of Home Bleaching.
In strip tooth whitening reviews often carry a negative character due to the fact that the front surface of the teeth, and are clear white, but in the spaces between the teeth still remain in the dark. This creates a sharp contrast of dark and light, and interdental spaces in the result look like black triangles. Why is this happening.
First – strength whitening Gel on the inner surfaces of the strips of only about 0.2 mm. the surface of the teeth is not quite smooth, and therefore, the adjustment of the strips on the teeth, the whitening Gel penetrates simply not enough in the spaces between the teeth space. The second reason lies in the irregularities of the teeth, for example, if you are pushing. In this case, the adjustment of the strips on the teeth, the lingual supraglottic) is deeper (very wrong, which would mean that the bad contact of whitening Gel with these teeth.
Thirdly, the Problem is that most people use deposits, the Whitening Strips, without the prior acceptance of the tooth, and a pigmented dental plaque, the dentist. The fact that covered to have a touch of the surface of the teeth to be bleached, a Priori, much worse, because the Plaque in these areas prevents the penetration of hydrogen peroxide in them. And therefore, the surface of the teeth in these areas remains in the dark.
Clinical studies have shown that the penetration of free radicals in the pulp of the tooth within 15 minutes after application of 3% hydrogen-peroxide Gel on the tooth enamel. It is this process, as well as a certain degree of demineralization of tooth enamel and Dentin and lead to the development of hypersensitivity of the teeth after bleaching.
The sensitivity is expressed in the emergence of pain to thermal stimuli (heat, cold). And the longer the course lasts for bleaching and/or the higher the concentration of the hydrogen peroxide – topics with each day stronger and the sensitivity. In this case, you can begin to apply the special Paste for the decrease of the sensitivity, or reduce the exposure time of the strip on the teeth, or to start the by the time. And after completing the course whitening cost of a course of remineralization or fluorination of the teeth.
If you are on the teeth, there is Erosion, carious lesions, deep wedge-shaped defects with nudity Dentin, then we can predict a very high speed to say the penetration of hydrogen peroxide into the pulp (neurovascular bundle) – with the development of severe pain and even chemical burns of the pulp, which can then require that the distance of the nerve from the tooth. Therefore, dental caries, wedge-shaped defects should be cured before using whitening strips.
About half of all patients also complain on sore gums after the application of the whitening strip. The fact that the Whitening Strips have a straight shape, in contrast to the gums, and therefore, in the fixing of the strip on the teeth, you are always in contact with the gingival papillae. As said above strip to the Gel applied and the hydrogen peroxide with a concentration of 5.25 to 14% (average 10%), and promotes the development of chemical burns of the gums.
But the Gel with hydrogen peroxide is able to damage not only the gums. The whitening Gel is a cave in the moist environment of the mouth, so that a part of hydrogen peroxide device is necessarily present in the saliva. This means that hydrogen peroxide affects not only the papillae, but also to other areas of the gums and the tongue. In addition, if you swallow the saliva hydrogen peroxide directly on the mucous membrane of the throat skin, causing irritation. In order to reduce such side effects, always rinse the mouth after the removal of the strip, reduce the exposure or use a strip with a lower concentration.
If you shoot Whitening Strips, then you can often notice the resulting white spots on the tooth enamel. In most cases, it is not a Problem, since it occurs because of the drying Phase of the enamel due to the fact that the strips to isolate the front surface of the teeth of a contact through saliva. Such spots go after a few hours (after the Email has enough water).
However, the use of inferior bleaching strips (Whitening Gel has an acidic pH-value) – you can meloid white spots on the tooth enamel, which will last a lifetime Also this Problem can occur when the enamel of your teeth, and a weak resistance against chemical and mechanical factors, what emerges on the background of the demineralization of tooth enamel. Generalization means that contains your e-mail very little calcium, i.e., as if porous.
If the white meloid stains, your teeth before the bleaching, then this is a sign of demineralization of the tooth enamel, which means that for you to any kind of chemical bleaching is contraindicated. The use of chemical bleaching on the background of the demineralization of the tooth enamel leads to an even larger loss of tissue of the teeth in calcium, which increases the risk of the destruction of the teeth (as a result of increased heavy wear or caries).
Peroxide of hydrogen in the case of prolonged exposure to penetrate not only in the whole depth of the tooth enamel and Dentin, but also in the pulp (neurovascular bundle). There are numerous studies that confirm the slightly negative influence of peroxy-compounds to the substance of the tooth.
Strips for whitening the teeth with a concentration of hydrogen peroxide up to 10% included – are certainly not provided enough funds for home-use, which causes critical significant changes in the teeth (the Tool is a slightly alkaline pH-value on the teeth no carious lesions, but also with good oral hygiene). A slight reduction in mineralization of enamel and Dentin may be due to the following rates, remineralization and fluorination of the tooth enamel.