Most whitening products contain peroxide as their active ingredient. Peroxide enters the pores of the teeth and triggers a reaction with the stain-causing molecules, breaking them up so that they are no longer visible. The strength of the whitening solution and the amount of time it remains on your teeth can both affect the amount of sensitivity you experience.
If you tend to have sensitive teeth, we may recommend less concentrated whitening products, which means they have lower levels of peroxide, and shorten the application times so that your teeth are in contact with the solution for less time. You can also decrease the risk of sensitivity by using desensitizing toothpaste for a few weeks before whitening and while you whiten and by undergoing fluoride treatments periodically. Fluoride helps harden enamel and protect teeth.
Although some people do experience sensitivity after whitening, it is not permanent, and it does not indicate damage. The sensitivity should decline quickly, and you should be back to normal within a few days. Call our office today to learn more or to schedule an appointment.