Bioplant HTR is a patented nonresorbable co-polymer derived from a proprietary process combining polymethylmethacrylate ("PMMA") and polyhydroxyethylmethacrylate ("PHEMA"). Additionally, it contains very thin layers of barium sulfate (for radiopacity) and calcium hydroxide/carbonate which is the direct interface with bone.

Since this polymerization reaction occurs in the production laboratory, there is no heat generated in the tissues, and no chance of monomer contamination.

While part of Bioplant HTR's composition is PMMA (acrylic), it should not be confused with the traditional properties and implant experience associated with pure acrylic materials. The synergy of Bioplant HTR's components results in a unique combination of physical properties not previously seen in any one bone substitute material (porosity, hydrophilicity, negative surface charge, user-friendly and strength). This combination gives the material its unique and beneficial characteristics which make it osteopromotive (i.e., promotes bone and soft tissue growth).