TeraHarz Permanent C&B - TC-80DPTera Harz C&B is a permanent C&B resin with the worlds highest flexural strength (ISO 10477). Tera Harz C&B has obtained KFDA Class II, CE Class II a medical device certification, which means its stability of physical properties is approved by the international authorities. Tera Harz C&B is an internationally proven 3D printing material and you can use it not only for temporary treatments but also for permanent ones from single crown to full bridge.