There are a few things you should know about teeth whitening treatments before you dive head first into putting product on your teeth.
Technically, if they are used correctly, teeth whiteners won’t do very much damage to your teeth. Most of the time, the risks of these treatments are basically minor and benign. Since the effect on fetuses and pregnant women are as of yet unknown, it is still crucial that pregnant or lactating women do not use products. If you have questions, ask a dentist or other oral care professional. They will know about the different types of teeth whitening treatments, and will be able to inform you that certain products are not for you, based on variables such as how sensitive your teeth are, or if you have gum disease, etc.

Teeth whiteners are not a 100% effective and long lasting treatment. You may need to whiten for several days in a row to achieve your desired shade. Keep away from tobacco products and colored beverages such as red wine, coffee, and teas.

There are generally three different types of risks found with teeth bleaching, but usually this can be avoided by simply taking care not to use a product that is too strong, or leave it in for too long.

Whitening products have not been reported to harm the enamel, and it is safe for dental restoration hardware such as bridges, crowns, and fillings. However, take note that dental restorations are not going to be whitened. This could lead to some unevenness in the shade of your teeth.

Whiteners are also harmless to the nerves that lie deep inside the pulp of the teeth. One study showed that after 4 and a half to 7 years of followup after teeth whitening, no one that was using a whitening product needed to have a root canal to repair any damage to the nerves of their teeth.

In short, teeth whitening products are very safe and effective, just make sure that they are used properly and that any warnings are heeded.