Impregum Penta Soft Quick (3M ESPE) – impression material

Impregum Penta Soft
Impregum Penta Soft Quick is a fast-setting polyether impression material with a medium-bodied consistency. The mixing ratio, based on volume, is 5 parts base paste :1 part catalyst.The paste is mixed in Pentamix versions from Pentamix 2 (September 1999) on, earlier Pentamix units (before September 1999) extrude the material too slow.

Due to the lower Shore hardness, the impression material is highly suitable for impressions with slight undercuts, even without additional blocking out.

Each of the foil bags is sealed with a PentaMatic cap. This PentaMatic cap opens the foil bag automatically in the Pentamix mixing unit as soon as enough pressure is built up by the plunger.

See the pertinent instructions for use for details on the Pentamix and acces sories, Polyether Adhesive, Penta Elastomer Syringe and Penta Mixing Tips Red.

These instructions for use must be kept for reference for the duration of product use.

Indications Impregum Penta Soft Quick

  • Impressions of inlay, onlay, veneer, crown, and bridge preparations
  • Fixation and implant impressions

Impregum Penta Soft Quick is especially suitable for taking impressions of single-unit and two-unit preparations.

Precautionary Measures
If an adverse reaction is observed in a patient, discontinue use of the product in this patient.

Impregum Penta Soft Quick – instructions for use:

Preparatory Steps
Block-out undercuts or areas where gingival recession exists to prevent the impression material from “locking” onto the tooth structure. Failure to block-out may make tray removal difficult, or cause extraction of natural teeth or prosthesis. The block-out is especially important when using impression materials with high Shore hardness.

Impression tray:
Any impression trays generally used for precision impressions are suitable.

  • For sufficient adhesion to metal and plastic, apply a thin layer of Polyether Adhesive to the impression tray and allow it to dry completely (at least 30-60 sec,15 min is ideal).

Pentamix/Penta Cartridge/Foil Bag:

  • Use the Impregum Penta Soft Quick foil bag only in combination with the designated Penta cartridge and with Penta Mixing Tips Red.
  • Prepare new foil bags before taking the first impression by extruding about 3 cm of paste.The paste must emerge in a uniform color.
  • If a new mixing tip has already been mounted when the cartridge is inserted, make sure that the drive shaft engages the mixing tip prior to start of mixing.

Solutions based on aluminum hydroxide chloride or aluminum sulfate are suitable retraction agents.The use of hemostatic threads containing epinephrine (adrenaline), 8-hydroxyquinoline sulfate, and iron (III) sulfate for retraction may impair the setting of polyether impression materials.

  • Keep the area dry where the impression is being taken.
  • If necessary, use hemostatic threads for subgingival preparations.
  • Before taking the impression, remove completely any residue of the retraction agent by rinsing and drying.

Dosing and Mixing  Impregum Penta Soft Quick
Dosing and mixing are done automatically in the Pentamix mixing unit. Only the Pentamix 2 or younger Pentamix versions must be used to mix Impregum Penta Soft Quick.


Impregum Penta Soft Quick

The processing time (max.1:00 min) begins with the entry of the paste into the Penta Mixing Tip Red (= start of mixing). It includes the filling of the Elastomer Syringe, application around the preparation, loading of the impression tray, and
the positioning of the tray in the mouth.

The residence time in the mouth must always be 3 minutes, regardless of the previously needed processing time.

Impression Taking
Mono-phase technique

  • To apply around the preparation, attach the Penta Elastomer Syringe to the Penta Mixing Tip Red of the Pentamix mixing unit and fill it.
  • Then load the impression tray which has been prepared with adhesive. Keep
    the mixing tip immersed in the impression material at all times.
  • Apply around the dried preparation from the bottom up. Keep the tip of the intra-oral tip immersed in the impression material and in contact with the tooth surface at all times during application.
    – Application around the preparation and loading of the impression tray must be coordinated so that the loaded impression tray
    can be placed in the mouth immediately after the application. The processing times shown for the materials used must not
    be exceeded. Otherwise, the two materials will not set together. The consequence would be deformations or a poor bond in the impression.
  • Position the loaded impression tray in the mouth immediately after the application and hold it in place, without applying pressure, until setting is complete.
  • When the setting time has lapsed, remove the impression from the mouth.
    – To remedy initial adhesion (“setting the valve”), especially with upper jaw impressions, remove the tray from the gingiva on one side in a posterior position. If this proves difficult it may be necessary to carefully blow some air or water between the impression and the gingiva.

After Impression Taking
Thoroughly examine and explore the sulcus of the prepared teeth and surrounding dentition. Remove any residual cured impression material from the mouth.


  • Place the impression in a standard disinfectant solution commonly used for impressions for the period of time recommended by the manufacturer.
  • Excessive disinfection may damage the impression. After disinfection, rinse the impression under running water for approx.
    15 sec, then dry.

Model Preparation Impregum Penta Soft Quick

  • Prepare a cast from the impression with a commercial specialized stone plaster no earlier than 30 min and no later than 14 days after taking the impression.
  • To avoid introducing bubbles into the model, briefly pre-rinse with water and dry with air. Do not use surfactants as these impair the quality of polyether impressions and are not necessary.
  • Polyether impressions may be silver-coated, whereas copper-coating is not feasible.


  • Paste that has not set may be removed with ethanol or by rinsing with water and soap.
  • Acetone can be used to remove the adhesive from impression trays.


  •  At temperatures below 18° C/64° F, the viscosity of the pastes will increase to such an extent that there may be mixing problems in the unit. Store the pastes for 1 day at a minimum temperature of 18° C/64° F; they can then be processed without loss of quality.
  • Direct exposure to sunlight and damp storage conditions may damage the impression, see Storage.
  • Polyether impressions should not be exposed to solvent-containing liquids under any circumstances. Swelling and imprecise modeling may result.
  • 3M ESPE polyether materials may only be combined with 3M ESPE polyethers.
    The working and setting times of the individual products must be strictly observed.

Storage and Stability Impregum Penta Soft Quick

Store the products at 18-25° C/64-77° F. Do not refrigerate!
Do not use after the expiration date.
Store impressions in a dry place away from light at temperatures below 30° C/86° F.

Related Posts

Orthoprint – alginate impression

CATEGORY Polyether
1 Star2 Stars3 Stars4 Stars5 Stars (2 votes, average: 5.00 out of 5)