Internal bleaching is a treatment used to teeth after root canal treatment. In cases of trauma or root canal treatment, discoloration can spread from inside of the tooth to the exterior enamel. It is a non-invasive option that can help avoid further loss to the tooth structure.
Traditional tooth whitening is applied to the outside of the tooth for cosmetic purposes. With internal bleaching, a bleaching agent in placed inside the tooth after a root canal, and lightens over time. Becuase the tooth has been treated, the process is painless. Internal bleaching may not eliminate all staining, but it can be an excellent option for cosmetic improvement.