Keller Laboratories Inc. is a full service dental laboratory that manufactures dental prosthetics, including crowns, bridges, full/partial dentures and the latest metal free esthetic restorations. It introduced ClearFrame partials made from a state-of-the-art injection molded material that replace the chrome cobalt frames of traditional cast partials with a clear semi-rigid nylon frame. The laboratory's materials are Food and Drug Administration (FDA) approved and either ISO Certified or CE Standard. It utilizes the Identalloy Program that identifies contents of restorations containing metal. Started in 1948 in downtown St Louis, Keller Laboratories Inc. has grown into a company with a staff of more than 230 employees.