DIN EN ISO 4823:2015-12

In dentistry, impressions are used to reproduce the intraoral situation in the patient's mouth on an extraoral physical model. The accuracy of the impression is particularly important for the fabrication of accurately fitting restorations. Various impression materials and techniques are used to obtain such highly accurate impressions. This standard applies to elastomeric impression materials. It specifies the requirements and tests that the state-of-the art body of knowledge suggests for helping determine whether the elastomeric impression materials, as prepared for retail marketing, are of the quality needed for their intended purposes. The International Standard has been prepared by Technical Committee ISO/TC 106/SC 2/WG 7 "Impression materials" (secretariat: ANSI, USA), in collaboration with Technical Committee CEN/TC 55 "Dentistry" (secretariat: DIN). The committee responsible at DIN is Working Committee NA 014-00-22 AA "Abformmassen" ("Impression materials") at NADENT.