Specialist internal bleaching for discoloured endodontically treated teeth — a conservative alternative to crowns and veneers when the tooth structure is otherwise sound.
Non-vital bleaching — also called internal or walking bleach — is a targeted endodontic whitening technique for teeth that have darkened following root canal treatment or trauma. Rather than placing a crown or veneer over a discoloured anterior tooth, a specialist bleaching agent is sealed inside the pulp chamber for several days to lift the internal staining. The result is a natural colour match without sacrificing healthy tooth structure.
Teeth most commonly darken after endodontic treatment for three reasons: residual pulp tissue breakdown products leaching into the dentinal tubules, old restorative materials bleeding colour into the dentine, or pigment from trauma (iron from blood breakdown within the pulp chamber).
Because the discolouration originates inside the tooth, external whitening strips, professional tray bleaching and in-chair power bleaching rarely fix it — the bleaching agent simply cannot reach the pigment trapped in the inner dentine.
The procedure is straightforward and performed under rubber dam and microscope magnification at our Wollongong practice:
Most cases achieve a satisfactory colour match in one to three applications.
Non-vital bleaching is suitable when:
It is not suitable where the root canal seal is compromised, where the tooth already requires a crown for structural reasons, or for vital teeth — where conventional external bleaching is the appropriate technique.
The initial consultation (45–60 minutes) covers history, clinical examination, pulp testing of adjacent teeth, digital photographs for shade documentation, and CBCT 3D imaging where indicated to confirm the integrity of the existing root filling. A written quote is provided before any treatment is commenced.
Bleaching visits themselves are short — typically 20–30 minutes — and involve minimal discomfort. Mild sensitivity for 24–48 hours after each application is normal and manageable with simple analgesia.
When performed under specialist conditions with an appropriate cervical barrier and correct bleaching protocol, non-vital bleaching carries a low risk of complications. The historical concern about cervical root resorption is almost entirely associated with older thermocatalytic techniques using high-concentration hydrogen peroxide. Modern walking-bleach protocols with sodium perborate and a well-placed cervical seal have a strong long-term safety record.
Most patients retain satisfactory colour for many years. Some gradual relapse is normal — the tooth may darken again slightly over five to ten years. If this happens, the procedure can be repeated. Maintaining good oral hygiene and avoiding heavy staining foods (red wine, coffee, strong tea, tobacco) prolongs the result.
Most private health extras policies include internal bleaching under the endodontic item codes. HICAPS is available on-site for same-day claiming. Contact your fund before your appointment to confirm your specific entitlements.
Some general dentists offer non-vital bleaching. Specialist referral is commonly recommended where the existing root filling is more than five years old, where CBCT is needed to verify the seal, where the discolouration is severe, or where previous bleaching attempts have not held. Your dentist is welcome to contact us to discuss a case before deciding.
South West Sydney patients may prefer our sister practice — Southwest Endodontic Centre, Liverpool →.