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This standard specifies the nominal diameters of the working parts of rotary dental instruments and procedures for verifying the dimensions. The International Standard has been prepared by ISO/TC 106/SC 4/WG 1 "Implant instruments" (secretariat: DIN), in collaboration with CEN/TC 55 "Dentistry" (secretariat: DIN). The committee responsible at DIN is NA 014-00-21-02 AK "Instrumente für die dentale Implantologie" ("Instruments for dental implantology" at NA 014-00-21 AA "Dentalimplantate" ("Dental implants") of NADENT
This document replaces DIN EN ISO 2157:1995-04 .