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UltraSeal XT™ hydro

Hydrophilic Pit and Fissure Sealant
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Product Details

UltraSeal XT hydro is a light-cured, radiopaque, fluoride-releasing composite sealant. It is stronger and more wear resistant because it is a 53%-filled resin and has less polymerization shrinkage than competitive products. The spiral brush action of the Inspiral Brush tip causes shear thinning of the filled, thixotropic UltraSeal XT hydro, reducing its viscosity as it is placed. The resin firms when shear thinning ceases and placement is complete, preventing it from running before it can be light cured. The hydrophilic chemistry with its characteristic thixotropic nature chases moisture (that in hydrophobic sealants can cause sealant failure) deep into the pits and fissures on a microscopic level. Once there, the advanced adhesive technology securely bonds the sealant to the enamel, increasing marginal retention and reducing microleakage.
  • Hydrophilic chemistry
  • Advanced adhesive technology
  • Fluorescent properties
  • Highly filled resin
  • Two shades: Opaque White and Natural
  • Thixotropic/ideal viscosity
Read Dr. Fischer's letter on BPA. 


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Indications for Use

UltraSeal XT™ hydro

​Use UltraSeal XT hydro for prophylactic sealing of pits and fissures.


UltraSeal XT™ hydro

UltraSeal XT hydro vs. the Leading Competitor

UltraSeal XT hydro provides a complete seal with no microleakage.
Competitor hydrophilic sealants don’t form a proper seal and, as a result, allow microleakage (1).
UltraSeal XT hydro features an advanced adhesive technology that allows it to form a superior bond with tooth structure, creating well-sealed margins.
Competitor hydrophilic sealants don’t adhere well to the pits and fissures, and begin to peel away from the margins (2).

Before and After UltraSeal XT hydro

Before placement of UltraSeal XT hydro.
After placement of UltraSeal XT hydro.
UltraSeal XT hydro’s fluorescent properties make it fully viewable under a black light, which makes it easy to check for marginal retention at subsequent appointments.

Technical Details

Hydrophilic Chemistry

UltraSeal XT hydro’s hydrophilic chemistry eliminates the need to pretreat the tooth with a drying agent, so you can give your patients effective treatments even faster. Providing quality treatments fast ultimately means more production for your practice.

Fluorescing Properties

The fluorescing properties of UltraSeal XT hydro allow you to quickly check the retention of the seal at the time of placement AND at later visits. This eliminates guesswork and gives you confidence your patients’ sealants are securely intact.

Advanced Adhesive Technology

Simply put, UltraSeal XT hydro lasts. Its advanced adhesive technology securely bonds to enamel, increasing marginal retention and reducing microleakage. The result is fewer patients who need sealants re-placed, which has a positive effect on your bottom line.


UltraSeal XT hydro Sealant Step by Step

– See Instructions for Use for complete instructions, warnings, and precautions.

  1. 1

    Etch for 30 seconds on uncut enamel, 15 seconds on cut enamel. Rinse.
  2. 2

    Remove visible moisture. Do not desiccate the tooth.
  3. 3

    Place UltraSeal XT hydro sealant.
  4. 4

    Cure for 3 seconds with VALO® curing light on Xtra Power mode, or 10 seconds on Standard Power mode.
  5. 5

    UltraSeal XT hydro sealant has added fluorescent properties, so you can check retention at every appointment.

    Note: See Instructions for Use for complete instructions, warnings, and precautions.

Customer Reviews


  • "​Since I have such great success with Opalescence® Boost and Opalescence® PF I also ordered the UltraSeal XT hydro for our sealants. I was previously using [a competitor's sealant] and they would pop off within a few weeks at times and just sat on top of the tooth. While placing the UltraSeal XT hydro, you can literally see the sealant going into the pits and fissures! Day and night difference, and the use of the little light is a fun way to show the kids and parents and be able to check them at their six-month appointments!!!"
    Stephanie Vieau, Dental Assistant – Centreville, VA


  • I’ve used UltraSeal XT plus for years. Why would I want to switch to UltraSeal XT hydro?

    There’s no doubt that UltraSeal XT® plus is a great sealant. If you’re happy using UltraSeal XT plus, then keep using it! However, if you’re interested in trying UltraSeal XT hydro, you may enjoy the fact that you don’t have to apply a drying agent before placing the sealant. This saves valuable time, and it’s ideal in situations where moisture control is challenging. Also, UltraSeal XT hydro’s fluorescing properties make checking its retention easy.
  • Will UltraSeal XT hydro replace UltraSeal XT plus?

    No. UltraSeal XT plus is the industry leader and has a long history of clinical success. We do not have plans to discontinue it.
  • Is UltraSeal XT hydro just a combination of UltraSeal XT plus and a drying agent?

    No, it isn’t that simple. Eight years in the making, UltraSeal XT hydro is the result of combining advanced adhesive monomers with other proprietary chemistries. The adhesive monomers are what cause UltraSeal XT hydro to become a hydrophilic sealant.
  • Does UltraSeal XT hydro contain any of the eight common food allergens (milk, eggs, peanuts, tree nuts, fish, shellfish, soy, wheat/gluten)?


  • Do I need a bonding agent with UltraSeal XT hydro?

    No. You just need to etch, apply UltraSeal XT hydro, then light cure. Please refer to instructions for use for complete procedure.
  • How many teeth can I seal with one 1.2ml UltraSeal XT hydro syringe?

    Approximately 35–40 teeth.
  • Can UltraSeal XT hydro be used for a microrestorative or as an “initial layer” of a composite restoration?

    No. UltraSeal XT hydro is indicated only for prophylactic sealing of pits and fissures.
  • After cleaning and disinfecting, the root canal still contains a smear layer. How is it possible that the EndoREZ penetrates the tubules?

    Cleaning with EDTA (File-Eze) followed by disinfecting with sodium hypochlorite, (ChlorCid) not only removes all the smear, but also much or all of the decalcified collagen. EDTA can be used as a conditioning agent for dentin bonding. It doesn't function in the acid sense, but chelated as a base. Sodium hypochlorite removes the decalcified collagen making an even better surface for hydrophilic resin adhesion and sealing. Such is not used for restorative dentistry because it takes many minutes to be effective and it could be damaging to surrounding soft tissues.
  • How much moisture should be on the tooth?

    Though no visible moisture should be present on the tooth, some moisture may still be present deep in the pits and fissures.
  • Will the sealant cure if a VALO with the Black Light lens is used to identify UltraSeal XT hydro when it is placed but before actual curing?

    Partially. Using VALO with the Black Light lens will cause the sealant to cure, but it will be incompletely cured. Therefore, we recommend using the VALO with Black Light lens only for visual verification after the sealant has completely cured.
  • How can a hygienist adjust UltraSeal XT hydro without using a bur?

    Hygienists can use the Inspiral Brush tip to remove excess resin, wiping it off on a 2x2 and removing again until there is only a minimal amount in the fissure. Alternatively, they can flood DeOx® over the sealant and have the patient close. They would then cure from the labial for 20 seconds, have the patient open their mouth, then cure directly on the sealant. If they see any ridge from an opposing cusp sinking into the uncured resin, they should be able to remove it with a sharp scaler.
  • Is UltraSeal XT hydro BPA free?

    Yes. Ultradent has always been concerned with the potential harmful effects of BPA, and as such has never used Bisphenol A in the production of UltraSeal XT plus or UltraSeal XT hydro sealants.

    Read Dr. Fischer's letter on BPA.

  • Can PrimaDry be used with UltraSeal XT hydro?

    No, we do not recommend the use of PrimaDry® with UltraSeal XT hydro. UltraSeal XT hydro works best on slightly moist teeth, and PrimaDry is designed to help desiccate the tooth.