Historical
ISO 1942-2/AMD2:1992
Amendment 2 to ISO 1642:1983
Adds the terms 2.146 (contact indicating material), 2.147 (fluoride gel), 2.148 (pit and fissure sealant), and 2.149 (opaquer).
International Organization for Standardization [iso]
Adds the terms 2.146 (contact indicating material), 2.147 (fluoride gel), 2.148 (pit and fissure sealant), and 2.149 (opaquer).