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At Contemporary Endodontics, our Team of Endodontists know that internal tooth bleaching can be a very effective method of lightening the appearance of those unsightly dark shadows on teeth that are due to either trauma or a root-filled in the past. The cause of the discoloration is usually due to an internal bleed in the tooth, due to a hard knock to the tooth in the past.
The dark shade of the tooth can be significantly lightened by a few in-chair bleaching treatments. This involves a small access hole drilled into the back of the tooth, the removal of any stained deposits, and the tooth being packed with a special bleaching agent and sealed with a temporary filling.
After a few visits a few days apart, the desired shade color will be reached, and the access hole permanently closed with a small filling.
All the teeth may also be bleached from the exterior of the tooth by using the regular method involving a home application of bleach into individually molded trays.
Internal bleaching is a more conservative option compared to typical restoration procedures such as veneers or crowns but is sometimes used to lighten teeth before the application of these techniques to prevent the discoloration of the natural tooth from showing through. Also, porcelain veneers or crowns may be required not only to achieve improved color but also to strengthen a root canal treated tooth.