A flossing appliance with a body portion which includes a system for generating bursts of liquid and/or a liquid/gas mixture. A neck portion extends from the body portion through which the bursts are delivered to a nozzle, which is shaped and adapted to fit into the interproximal spaces of a user's teeth. A use reminder system comprises a reminder timer which begins to time following the activation cycle of the appliance. An indicator is responsive to the timer, providing an indication to the user that the timer has exceeded a predetermined time, such as 24 hours, without use.