A darkened front tooth: root canal retreatment, internal whitening and a ceramic crown
Treated by Dr. Hyun Sung Park


Why the patient came in
The patient came in because one upper front tooth had turned dark. The tooth had a root canal treatment from before, and the X-ray showed inflammation at the root tip.
What was done
- The root canal treatment was redone. On opening the tooth, dark contaminated material was found inside the canal.
- Part of the root filling was removed and a barrier of glass ionomer or resin was placed to keep the whitening agent inside the crown of the tooth.
- A whitening agent was sealed inside the tooth and the colour was checked every 4 to 7 days.
- After whitening, the shade was matched and an all-ceramic crown was made so that no dark colour shows through.



Published with the patient’s consent. Photos and X-rays are from the clinic’s records. Treatment plans and results differ for every patient; only an examination can show what is possible for you. A tooth whitened from inside can darken again over time. Retreatment and crown preparation can cause temporary sensitivity or discomfort.











