This international standard provides dentists and forensic dental experts with an organized system of concepts to describe the distinctive characteristics of an individual s mouth. The chosen system is based on a forensic approach of a mouth s characteristics, with many concepts specifics to the identification domain that are not defined elsewhere in ISO dentistry vocabularies (e.g. present tooth ). The hierarchical structure of the standard is designed to describe attributes of a tooth, the mouth and a prosthesis/orthosis with increasing levels of discriminative characteristics (e.g. material characteristics, restored tooth surface& ) and the possibility to connect any level of description of an attribute with the most comprehensive concept. This standard is intended to be used for data exchange between antemortem and postmortem files, without any ambiguity on the terms used to describe an individual s mouth.