Main

West NX, Addy M et al. Clin Oral Invest 2011; doi:10.1007/s00784-011-0560-9

Are there novel mouthrinses that offer therapeutic benefits but are not associated with tooth staining? The research aim of this single centre, randomised, single-blind, four treatment crossover study was to explore the latter. Tooth and tongue staining (results for tongue staining are not given in this abstract), in 20 healthy participants, were compared after they had used different mouthrinses. A 'forced stain model' was adopted that consisted of mouthrinsing at hourly intervals and then followed by warm black tea, eight times a day for 4 days. The primary outcome measure was a 'whole mouth mean' stain when observed on each incisor, canine and premolar tooth. Two formulations of experimental amine fluoride/stannous fluoride mouthrinses resulted in significantly more tooth staining than the phenolic/essential oil rinse (COOL MINT® LISTERINE®). Nevertheless, all three mouthrinses were associated with more staining than the negative control water rinse.