DIN EN ISO 10394:2024-05

This document establishes a system for the designation of supernumerary teeth in humans using two alphanumeric characters. This designation system for supernumerary teeth retains the two-character format of ISO 3950 to maximize compatibility with existing forms, software and messaging systems while still satisfying the requirements identified as essential to the success of the designation system originally drawn up by the FDI World Dental Federation and approved by the World Health Organization (WHO) and Technical committee ISO/TC 106, Dentistry, that is: a) simple to understand and teach; b) easy to pronounce in conversation and dictation; c) readily communicable in print and by wire; d) easy to translate into computer "input"; e) easily adaptable to standard charts used in general dental practice. To ensure the designations of this document can be easily recognized and to avoid confusion with ISO 3950, a sixth requirement that shall meet this designation system for supernumerary teeth is introduced: f) does not assign a new meaning to designations that exist in ISO 3950. The responsible national standardization committee is Working Committee NA 014-00-03 AA "Terminologie" ("Terminology") at DIN Standards Committee Dentistry (NADENT).