Voco Retraction Paste 0.3g 100 CountsVOCO Retraction Paste is an aluminum chloride based astringent paste used to stop bleeding, displace moisture and temporarily widen the gingival sulcus to create ideal conditions for digital or conventional impressions. The 2 phase consistency of the paste initially flows easily under low pressure for precise application, then increases in viscosity to remain stable in the sulcus. Ideal for use prior to analog or digital impressions, cementation of