Hello Saeideh Jajrmi,
Teeth whitening is a simple process. Whitening products contain one of two tooth bleaches (hydrogen peroxide or carbamide peroxide). These bleaches break stains into smaller pieces, which makes the color less concentrated and your teeth brighter.
You can try some of the chemicals listed below for preparation of teeth whitener:
1. Sodium Bicarbonate: Baking soda has natural whitening properties, which is why it's a popular ingredient in commercial toothpaste. It's a mild abrasive that can help scrub away surface stains on teeth.
2. Hydrogen peroxide: Hydrogen peroxide is a natural bleaching agent that also kills bacteria in your mouth. In fact, people have been using hydrogen peroxide for years to disinfect wounds because of its ability to kill bacteria. Many commercial whitening products contain hydrogen peroxide, although at a much higher concentration than you will use.
3. Activated charcoal: Brushing with powdered charcoal supposedly pulls toxins from the mouth and removes stains from teeth.
4. Kaolin clay: Proponents of this method claim that brushing with clay helps remove stains from teeth.
You may also check the link for your study...
Article In Vitro Tooth Whitening by a Sodium Bicarbonate/Peroxide Dentifrice
Thank you!!
I suggestion a mix of hydrogen peroxide (3%), sodium bicarbonate and bromelain. Use it after the toothpaste.
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