some recommendations and suggestions should be followed in order to prevent or reduce the potential ingestion of fluoride. These are: to reduce the concentration of fluoride in the product and decrease the application time; to confection individuals trays recovered with foam and trimmed; to maintain the seat in a vertical position so that the patient remain seated, to always use a saliva ejector; to remove the excess of fluoride with a gauze; and to request the patient to as much as possible after the fluoride This application. method is, however, appropriate for children above 3 years old