| abstract |
denture cleansing tablet having anti-plaque activity as well as good cleansing, bleaching, disinfecting and antibacterial properties comprises a two-phase tablet of a first, fast dissolution, alkaline layer providing a pH of about 9 and a second, slower dissolution, acid layer containing a quaternary ammonium compound such as cetylpyridinium chloride as an anti-plaque agent and providing a pH of about 3.0± 0.5. |