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20% Ferric Sulfate

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Product Details

ViscoStat hemostatic is a 20% ferric sulfate equivalent solution with inert binding agents in a viscous, aqueous vehicle. It has a pH of ~1.0 and contains patented, fumed silica to limit the acidic activity, making it kind to hard and soft tissue.
  • Causes profound hemostasis
  • Stops bleeding in seconds, saving chair time
  • Provides unsurpassed kindness to hard and soft tissues
  • Eliminates sulcular fluid contamination for optimal bonding
  • Decreases costly impression remakes


2015 Reality Five Star Award2015 Dentaltown Townie Choice Award

Indications for Use


ViscoStat is suited for a variety of dental and oral surgery procedures to arrest surface capillary bleeding. Such procedures include fixed prosthodontics, restorative-operative, periodontal treatment, etc. ViscoStat is also recommended for retrofillings, canine impactions, gingivectomies, and as a “fixative” for pulpotomies. ViscoStat can also be used to prevent leakage caused by sulcular fluid contamination during direct bonding procedures. Soak Ultrapak cord in hemostatic and isolate the tissues, following with a firm air/water spray.



Tissue Management Is the Key to Quality Direct and Indirect Restorations

ViscoStat's viscous, non-drip formula achieves hemostasis efficiently. The Metal Dento-Infusor® tip infuses the hemostatic agent into capillaries, forming a cork-like "plug," then wipes coagulum away.
Thoroughly rinsing ViscoStat is an important step in testing hemostasis while also creating a field for optimal bonding with no compromise in bond strength.

Hemostasis and Fluid Control

ViscoStat and Ultrapak® cord are ideal for controlling fluids (blood and sulcular). Use a firm air/water spray to remove excess hemostatic solution.
Successful bonded restoration, two weeks post-op.

Easy to Dispense with the IndiSpense Syringe

​Reduce cross-contamination and the need for sterilizing by loading unit dose directly from the patented IndiSpense syringe.

Protects Tissues and Leaves Smear Layer Intact

​The ViscoStat patented formulas protect tissues even with a low pH. Note: ViscoStat will not remove dentinal smear layer, resulting in less tooth sensitivity even after 10 minutes of exposure.

Technical Details

Provides Profound Hemostasis in Seconds

The faster hemostasis can be achieved, the faster you can perform quality dentistry for the patient. For most cases, ViscoStat provides profound hemostasis in just a matter of seconds.

Kind to Hard and Soft Tissues

With a pH of approximately 1, ViscoStat is one of the kindest hemostatics to be placed against mineralized tooth structure. ViscoStat is formulated with patented binding and coating agents to protect tissue while achieving profound hemostasis and sulcular fluid control in seconds.

Viscous Consistency

ViscoStat is formulated with a patented fumed silica to buffer acidity and offer a more viscous consistency that will not run or drip. This makes precise placement of ViscoStat easy, regardless of the location in the mouth.

Decreases Costly Impression Remakes

Quality tissue management is essential to accurate impressions. When impressions are made with fluid present in the sulcus, the quality of the impression suffers and the impression often needs to be remade. Because ViscoStat eliminates bleeding and sulcular fluid, it creates the optimal environment for perfect impressions.


Tissue Management Technique Step by Step

  1. 1

    ​Burnish the hemostatic agents firmly against the sulcus until bleeding stops. (No more coagulum forms.)
  2. 2

    ​A blunt, bent cannula with padded "scrub brush" enables infusing and cleaning in the cut sulcus.
  3. 3

    ​Apply firm air/water spray to remove residual coagulum and test tissue for quality, profound hemostasis. If bleeding continues, repeat infusion technique.
  4. 4

    ​After complete hemostasis has been reached, excellent retraction is achieved through the use of Ultrapak® knitted cord.


  • "I can't live without ViscoStat because it takes seconds to save an hour and stops the bleeding when nothing else will. Now I don't have to re-prep for impressions."
    Dr. Jeffrey Stratford-Jones – Ventura, CA
  • "[ViscoStat] is convenient, dependable, and effective in bothersome clinical bleeding situations. It is the product of choice when others fail to do the job."
    Dr. Daniel Sweet – Colvis, CA
  • ​"ViscoStat has allowed me to take clean, dry, accurate impressions even in some of the most hemorrhagic situations. Thank you! I appreciate it, my lab man appreciates it, and my patients appreciate it."
    Dr. Monte Person – Fresno, CA
  • "​ViscoStat can stop bleeding on the cervical area of a crown prep like nothing else I have ever seen! It is a miracle solution! I wish I knew how many thousands of hours it has saved me over the years. Thank you, Ultradent!"
    Dr. Scott J. Hadley – Haxtun, CO
  • ​"Controlling bleeding is almost an everyday procedure. To improve fine impressions of crown margins I rely on ViscoStat to control bleeding, leaving a dry open field for impression material."
    Dr. Bertram Chodorov – Melbourne, FL
  • "Without a doubt I would be lost without ViscoStat! It quickly stops sulcular bleeding, allowing me to place the Ultrapak cord and get an excellent impression on the first try. It is also great to use when bonding composites near gingival tissues. ViscoStat is a vital part of my crown prep and composite armamentarium."
    Dr. Julie Ann Routhier – Savannah, GA
  • ​"I use ViscoStat in my practice on an almost daily basisin fact, it's a product that is a MUST HAVE for me! It's absolutely vital when seating crowns. After removing the temporary crowns and doing try-in of the definitive crowns I always use ViscoStat to control the gum tissue hemorrhage. It works absolutely AMAZING and provides a clean, dry field for me to deliver the crowns without compromising the marginal integrity as the cement cures!"
    Dr. Todd W. Hohlen – Lincoln, NE


  • Is ViscoStat more powerful than Astringedent?

    Yes. ViscoStat is a 20% ferric sulfate solution, and Astringedent is a 15.5% ferric sulfate solution.
  • Can ViscoStat be used with an epinephrine preparation?

    No. When a ferric sulfate solution like ViscoStat is used with an epinephrine preparation, a blue/black precipitate will occur.
  • How do I know that I’ve achieved hemostasis with ViscoStat?

    Hemostasis is realized when the new coagulum stops forming. By burnishing the gingival margin with the Metal Dento-Infusor tip, ViscoStat is delivered to the capillary openings, stopping the bleeding. After ViscoStat has been delivered to the preparation and rubbed into the sulcus, test the preparation with a firm air/water spray. If bleeding resumes, rub additional ViscoStat into the preparation and test again. When no bleeding occurs after a firm air/water spray, profound hemostasis has been achieved.
  • How fast is hemostasis achieved with ViscoStat?

    ViscoStat is capable of providing hemostasis in a matter of seconds. Depending on the patient’s periodontal and systemic health, hemostasis may be achieved in as little as 2–3 passes around the sulcus or as many as 20 or 30.