With tooth powder gums rotten, consider the tooth powder on the gums of the stimulation caused by the local allergic reaction, or tooth powder on the gums of the corrosive caused by. 1. Allergic reaction: the use of tooth powder contact to the gums, may lead to contact parts of the allergic reaction, will lead to gum congestion and swelling, and some will also form erosion, so it may lead to the use of tooth powder gums rotten phenomenon. 2. tooth powder corrosive to the gums: due to the tooth powder has a certain degree of corrosiveness, the use of tooth powder may stimulate the gums, corrosion of the gums, resulting in the use of tooth powder gums rotten. With tooth powder gums rotten, need to stop using in time, and with a lot of water rinse mouth, dilute the concentration of local, reduce the stimulation, go to the regular hospital as soon as possible to check the treatment.