The three types of tooth discoloration are intrinsic coloration, extrinsic coloration, and a combination of both. There are various treatments for these stains. The most popular exterior discolouration, nevertheless, is cosmetic repair, which involves whitening the teeth's surface discoloration.
While some manufacturers also produce whitening gels that are triggered by light sources of various wavelengths or quicken the reaction, these gels occasionally work alone. Oxidation serves as the mechanism for the bleaching process. The compounds on the surface are eliminated from the environment during this oxidation process.
Internal discolorations are also removed using a method based on oxidation. Internal discolorations are typically brought on by alterations in the dentin's structure (due to medication, developmental changes, etc.), trauma, root canal therapy, etc. Due to these factors, internal discolorations are addressed by using specific gels from the tooth's interior tissues. Depending on the time, the person's habits, and the color of the tooth, the teeth may need to be re-whitened. They are applications that may need to be renewed on occasion for these reasons.