Tooth whitening system comprising: - a toothbrush (1) with a body (2) surmounted with a head (3) with bristles (301) for brushing the tooth surface, at least one reservoir (201) containing a compound comprising at least one whitening agent, means, inside or outside said body, for conveying said compound from said reservoir (201) to the head (3) and for dispensing the compound at said bristles (301), means for increasing the pressure of the compound inside the reservoir (201) such to dispense said compound at said bristles (301) through said conveying and dispensing means.
