Vb. Haywood et Rh. Leonard, NIGHTGUARD VITAL BLEACHING REMOVES BROWN DISCOLORATION FOR 7 YEARS - A CASE-REPORT, Quintessence international, 29(7), 1998, pp. 450-451
Nightguard vital bleaching with 10% carbamide peroxide was used to rem
ove a brown stain from the maxillary central incisor of a 13-year-old
boy. After 7 years, during which there was no touch-up treatment, the
discoloration had not returned. This conservative technique should be
considered before more invasive procedures for the treatment of discol
ored vital teeth in young patients.