Abstract: A method and apparatus for applying fluoride to the teeth of a patient. The apparatus includes a dental tray, which is sized and shaped to fit between the upper and lower sets of the patient's teeth. The dental tray is preferably a unitary block of a disposable, deformable material, having a top surface and a bottom surface into which simultaneous dental impressions of the upper and lower sets of teeth are to be made. The side wall of the dental tray includes a groove, which extends around the perimeter of the dental tray. The apparatus further includes an evacuation tube. The evacuation tube has a first end which is adapted to communicate with a source of suction, such as a saliva ejector. The remainder of the evacuation tube has a plurality of apertures which serve as entry ports through which displaced fluoride solution, saliva and other debris are aspirated.