Often after a root canal dentist will consider conducting an internal bleaching. It is somewhat different and perhaps more aggressive than conventional tooth whitening. Mostly because they are within the tooth, and not on the surface. What the dentist will do is an oxidizing agent inside the tooth. This will help to remove the discoloration. There are many causes that will cause severe discoloration, such as smoking habits, diet some red wines, and even plain old age. Even some types of fillings, the perpetrator or certain medications an individual takes. Bleaching presents a different process. In some ways it does not seem to be just as aggressive as the internal bleaching. Professional teeth whitening can be done in a variety of ways. A strong solution of peroxide can be applied and left for a period of time. If the dentist is using this technique than he guards to protect the gums. Peroxide is not a new found treatment. It is used by dentists for several years. One of the many good things about having professional teeth whitening done is that multiple treatments may be done on the same day. The results will probably be more dramatic Another alternative for the dentist to use a laser whitening procedure. He will be a slightly weaker solution of peroxide to the teeth, use a special type of laser light to a response in the peroxide cause. This takes a little time, probably until about 1 ½ hours, but the results are impressive. As a professional whitening procedure done by your dentist the final decision is his, but he gives you as many choices as possible. You have much to consider. First, what kind of results do you expect to know. Your dentist will only be able to give you a general idea, as everyone’s teeth are different. Some people get better results than others. The other consideration will be cost. Treatments vary in price. No doubt some are more expensive than others because of what they entail. Internal bleaching may be an option that the doctor gave you, just because he did not feel that the external whitening will be effective. The possibility exists that you could have done this on one tooth, and then with one of the other whitening treatments for the rest. The other thing you are going to want to know is what kind of follow-up treatments will be required at home, if applicable. There is a kind of maintenance to follow. Remember that regular brushing will help a lot of stains. Prior to the dentist whitening treatment will likely want an intensive cleaning of your teeth to do. Deletes a part of the surface stains. The rest of the procedure will be done with brighteners.