NOZZLE OF POWDER SPRAY DEVICE FOR DENTAL CARE

PROBLEM TO BE SOLVED: To provide a nozzle of a powder spray device for use in a removal care of a dental caries portion of a tooth in the nozzle of the power spray device in a dental field. SOLUTION: This nozzle 1 of a handpiece of the powder spray device is provided with an inner tube 3 supplying mixture of grinding power and pressurized air for use in the dental care and an outer tube 2 covering the inner tube and supplying liquid; and grinds the tooth by spraying the mixture and the liquid to the tooth. This nozzle for the powder spray device for the dental care is characterized in having a narrow tube part 13 formed by narrowing the inside diameter near the distal end of the inner tube, and a mixture diffusion part formed by widening the inner tube 3 from the narrow tube part 13 to a mixture injection hole 11. COPYRIGHT: (C)2008,JPO&INPIT