Section 18 OPTICAL, PHOTOGRAPHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION, MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; MUSICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 90 OPTICAL, PHOTOGRAGHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION, MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; MUSICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 90 21 HEARING AIDS AND OTHER APPLIANCES WHICH ARE WORN OR CARRIED OR IMPLANTED 90 21 29 OTHER DENTAL FITTINGS 90 21 29 00 OTHER DENTAL FITTINGS Commodity Code Description 90 21 29 00 000 OTHER DENTAL FITTINGS