Solventum (3M) Impregum Soft Handmix

Impregum Soft Handmix — hand-mixed medium-viscosity polyether

3M ESPE Impregum Soft hand-mixed medium-viscosity polyether impression material. Used with single-step monophase technique. Provides very clear impressions with a single impression material. Used for total/partial impressions and implant impressions. Impression can be stored for 14 days without dimensional change.

Application — medium viscosity

• Base and catalyst in equal proportions
• Mix 45 s until homogeneous colour
• Fill tray, place in mouth and have patient perform functional movements
• Working time from start of mixing: 2:30 min; total setting time: 6 min
• Used with non-perforated metal trays or custom trays
• Apply thin layer of polyether adhesive to tray surface before impression and allow to dry
• Pour stone into impression no earlier than half an hour and no later than 14 days

High viscosity — single-step dual-phase

Used for crown-bridge, inlay-onlay impressions. Flowable material (31751 Garant L DuoSoft refill) syringed around restoration from Garant gun. Impregum Soft HM high-viscosity base and catalyst dispensed in equal lengths on mixing pad, mixed homogeneously, filled into adhesive-coated tray and placed in mouth — procedures must be simultaneous.

Polyether properties

• Hydrophilic — spreads fully on wet surfaces; does not flee saliva, blood, moisture
• Thixotropic — flows under pressure, stops when released; does not flow into throat or drip on upper jaw
• Snap set — setting reaction starts toward end of working time; entire material sets at once equally
• Cannot be combined with silicone materials