The company was founded under the leadership of Ursel
Knappwost and Heinrich Röhrkasten. 14 different
products for tooth preservation (e.g., enamel sealing liquid,
now known as Tiefenfluorid, and copper-calcium hydroxide,
now known as Cupral). All products were developed by
Prof. Dr. Dr. h. c. med. dent. A. Knappwost (
Tübingen, and Hamburg Universities). See also
below the photo.