The bulk of the terms and definitions (TDEs) in this revision of ANSI/ADA Specification No. 33 relate to products, procedures and testing of products used in dentistry. This effort to update and standardize the nomenclature for dental products and testing should permit the authors of the various specifications and standards to discuss their concepts and procedures so they will be understood by those who must read and interpret these documents and test the products to determine if they are suitable for the purpose intended. ADA33-2003D