#N/Impression Compound, Sticks, 0.5 lb, Green, 15/Pk. Impression Compounds are unique mucostatic impression materials that are indicated for copper band impressions, addition to the periphery of a dental impression, and for custom trays. These thermoplastic compounds, weighing 1/2 lb, are available in cakes for added convenience and sticks, as well as three colors: gray, green, and red.