Hydrogen peroxide or carbamide peroxide: what is the best substance for tooth whitening?
Healthy, clear, lined teeth help people have nicer smiles and look younger. For this reason, teeth whitening has become the desire of most patients who attend dental offices and who request aesthetic procedures. Individual bleaching with a tray using 10% carbamide peroxide as the active principle among these procedures offers significant benefits without permanent damage to the tooth structure and therefore may be considered minimally invasive.
There are different ways of lightening the teeth ? vital or non-vital. Variations include how to use the bleaching agent (in the office or at home), the active substance (carbamide peroxide or hydrogen peroxide), the concentration of these substances, the vehicle used for them and the contact time between the gel whitening agent and tooth. Given so many variables, is it always prudent to carry out bleaching procedures under the supervision of a qualified professional? the whitening occurs as a result of a chemical reaction promoted by free oxygen, which is able to break down molecules of pigments, which are large molecules and of high molecular weight, into smaller molecules within the dental structure ( enamel and dentin). At smaller sizes, these molecules allow for more light reflection and the tooth appears lighter. In this way, the final active that promotes dental bleaching is oxygen. However, there are different ways of delivering oxygen in vital tooth whitening: through hydrogen peroxide or through carbamide peroxide.
Hydrogen peroxide, or hydrogen peroxide, when in contact with saliva and fluids inside of the dental structure, degrades in water and oxygen, although it can elevate the pH leaving the acidic medium and promoting the demineralization of the tooth. And perhaps because of this, carbamide peroxide is safer, since when it is degraded it releases less hydrogen peroxide and also releases urea, which will help maintain pH at neutral levels, reducing the possibility of losses minerals. To give you an idea, 10% carbamide peroxide breaks down into 3% hydrogen peroxide and the rest of urea, protecting the dental structure. Clearly, individual bleaching days using 10% carbamide peroxide for at least 4 hours and for at least 14 consecutive days have greater scientific backing and evidence of efficacy. dentist to guide and supervise any proposed bleaching treatment to his patient and modify protocols for a better end result.
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