GB/T 9937 specifies oral terms. This part is about basic and clinical terms of oral cavity. The terminology of oral materials, oral instruments and oral equipment and the tests related to these products are included in the other 4 parts of GB/T 9937. The purpose of this part is to provide definitions of some recognized dental terms for the formulation and implementation of standards, so as to facilitate the understanding of the document, and to promote mutual cooperation through close cooperation with the Dental International Federation, the World Health Organization and relevant national or international organizations. comminicate.