EXACTA's FRESH Pre-Op is a multi-purpose, cost effective medium body impression material.  Due to the highly thixotropic properties and fast setting time of 90 seconds, FRESH BOLD Pre-Op provides highly detailed impressions in less than one-quarter of the time of conventional impression materials. You can now have highly detailed study models, temporary matrix impressions and exacting crown and bridge impressions with just one material. FRESH Pre-Op is available in easy to dispense 50ml cartridges. Should you decide that FRESH Pre-Op is a little too fast, a regular set monophase gel material is also available in a 3:00 minute total set/work time.