bristles the active agent may be administered before during or after brushing in the toothbrush constructions described herein the active agent itself may be contained in the reservoir 15 in other words it is not necessary to generate the active agent internally or in situ this simplifies the construction of the toothbrush and avoids the need to handle any byproducts associated with the synthesis of the active agent alternatively an agent in one reservoir may be delivered via a delivery device to another reservoir where it is u201c activated u201d where it is then delivered via another delivery device to the one or more outlets a delivery system in the toothbrush constructions may employ multiple connections that are direct or indirect non limiting examples of active agents which can be used include antibacterial agents such as chlorhexidine cetyl pyridininum chloride triclosan stannous compounds herbal extracts and zinc compounds oxidative or whitening agents such as hydrogen peroxide urea peroxide sodium percarbonate and pvp h 2 o 2 supercharged fluoride delivery ingredients such as dicalcium phosphate dihydrate and others disclosed in u s pat no 5 785 956 tooth sensitivity ingredients such as kno 3 occluding agents such as novamin u00ae bioactive glass sodium silicate and arginine salts such as arginine bicarbonate gum health actives including those which.