This part of YY/T 0873 specifies the characteristic coding numbers of burs, polishing burs, cutting tools and surgical instruments. These codes refer to the tooth type of the working part of the instrument. These 3 digits appear in the 10th to 12th digits of the 15-digit full array, and form the fourth group of 3 digits in the 15-digit full array. Coding principles are explained in YY/T 0873.1 and YY/T 0873.2.
YY/T 0873.3-2014 history
2014YY/T 0873.3-2014 Dentistry.Number coding system for rotary instruments.Part 3:Specific characteristics of burs and cutters