Internal Bleaching
Internal bleaching is a cosmetic endodontic procedure that whitens a tooth from the inside out. Teeth that have undergone root canal therapy can sometimes darken over time as a result of blood products, pulp remnants, or certain filling materials that discolor the internal tooth structure. Because this discoloration originates from within the tooth, external whitening treatments such as professional teeth whitening or take-home whitening trays cannot reach or correct it. Internal bleaching addresses the discoloration at its source.
At Bensonhurst Dental Care, internal bleaching is performed by Dr. Alex Rubinshtein. The procedure involves accessing the pulp chamber of the previously treated tooth, placing a professional-strength bleaching agent inside, and sealing the tooth temporarily. The whitening agent works from within the tooth over a period of days, gradually lightening the discoloration. Depending on the severity of the darkening, the bleaching material may be replaced one or more times until the desired shade is achieved. Once the tooth matches the surrounding teeth, the access opening is permanently sealed.
Internal bleaching is a conservative and effective alternative to more invasive cosmetic options such as porcelain veneers or cosmetic crown replacements for addressing a single darkened tooth. It preserves the existing tooth structure while restoring a natural, uniform appearance to the smile.
Frequently Asked Questions
Why did my tooth darken after a root canal?
Discoloration after root canal therapy can result from residual blood products within the tooth, breakdown of remaining pulp tissue, or certain materials used during the procedure. The darkening develops gradually and may become more noticeable over time.
Is internal bleaching safe for the tooth?
Yes. When performed by an experienced clinician using appropriate concentrations and techniques, internal bleaching is a safe procedure. Dr. Alex takes precautions to protect the tooth and surrounding tissues throughout the process.
How many appointments does internal bleaching require?
Most cases require two to three appointments spaced about a week apart. At each visit, the bleaching agent is refreshed until the desired shade is achieved. The final appointment seals the tooth permanently.
Can internal bleaching be combined with external whitening?
Yes. For patients who want to brighten their overall smile, internal bleaching of a darkened tooth can be combined with professional external whitening to achieve a uniform shade across all teeth.
