- Due to the hydrodynamic mechanism of dentin sensitivity, it is evident that movement of fluid in the dentinal tubules is the basic cause of pain. - Bisco`s patented oxalate dentin desensitizer is specifically formulated to prevent intra-tubular fluid movement. - Bisblock forms oxalate crystals within the tubules, blocking fluid movement, thus relieving pain. - Use bisblock to desensitize exposed root surfaces. - Also use it to pre-treat tooth preparations prior to placing direct restorations and prior to temporizing indirect restorations. **For further product information, please contact Chat Support**