Tooth whitening is a procedure that lightens the yellowing of enamel and dentin. Discolorations within the tooth will be lightened. Stains are removed and a whiter brighter smile is created. Tooth whitening will make teeth appear whiter. A product is deemed simply "whitening" when it eliminates food or debris from the teeth without bleach. It has been shown to be highly effective at removing stains from teeth, including tobacco, coffee, tea, tetracycline, and various other tooth stains.
The whitening procedure involves the application of a tooth whitening gel containing between 25% to 40% hydrogen peroxide. A protecting barrier is used during the whitening process to keep your lips, gums, and tongue away from the whitening gel so it stays in place on your teeth.