BONASIL A+ Alginate Free is a medium viscosity vinyl polysiloxane (VPS) impression material suitable for all alginate applications. The innovative A-Silicone BONASIL A+ Alginate Free combines the assets of VPS materials such as exceptional detail reproduction, elastic recovery, and dimensional stability with the properties of traditional alginates. It is also ideal for creating temporary crown and bridge impressions in preparation for the use of Bright Temporary C&B.