The document covers polymer-based crown and bridge materials for laboratory-fabricated permanent facings or anterior crowns which may or be attached to a metal substructure. It excludes polymer-based materials which are used by the dentist to make crowns or veneers, or for repairs at the operatory. Nor does it cover the application of those materials for stress-bearing area of posterior teeth. It classifies polymer-based crown and bridge materials and specifies the requirements; it also specifies the test methods to be used to determine compliance with these requirements.