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Using tooth whitening products could potentially lead to increasingly fragile enamel.
Ohio State University researchers tested five name-brand whitening products (strips and trays), all of which rely on hydrogen peroxide or carbamide peroxide to create free radicals that attack the pigment molecules in enamel, ultimately making teeth appear whiter when the molecules stop reflecting light. Their findings show that more than just the enamel's pigment molecules are affected by this process.
After what each brand defines as a full whitening treatment, the human tooth samples displayed enamel loss ranging from 1.2 to 2 nanometers. Additionally, when the the researchers tested their ability to bounce back, the teeth were up to 19% less capable.
Even though the loss of hardness is relatively minimal, it causes enough concern to justify changing these formulas, according the the researchers. They believe manufacturers may be able to alter concentrations and modes of application to make home tooth whitening safer.
You may want to try using an all natural teeth whitening toothpaste for now.
Throughout your life, the foods you eat affect the health of your teeth. By eating the right foods, you can strengthen your enamel. Look for products that are rich in calcium, vitamin D and phosphorous because these strengthen your tooth enamel. Dairy products such as milk, yogurt and cheese are good options. If you are lactose intolerant, soy milk is a good calcium-rich alternative. Dark green vegetables, such as bok choy, kale and spinach also contain enamel-strengthening vitamins and minerals. Protein from fish, meats and eggs is another good source of phosphorous.
Limit sweets and carbonated beverages and brush after each meal.
Taking a good quality vitamin & mineral supplement is important also.