UltraSeal XT hydro Sealant: Pit and Fissure Application Steps
By Ultradent Products, Inc. | Published: 2026-10-14
Category: How-to Guides
Place hydrophilic pit and fissure sealant with a moisture-tolerant technique. Follow these step-by-step application steps to improve sealant retention in pediatric and adult patients.
Quick answer
For a moisture-tolerant sealant like UltraSeal XT hydro, isolate the tooth, clean the fissures, etch and rinse, then apply the sealant directly onto moist enamel. Light-cure according to the manufacturer’s instructions. This technique reduces the need for perfect dryness and helps maintain sealant retention in challenging pediatric cases.
Why moisture tolerance changes your sealant workflow
Traditional pit and fissure sealants demand a completely dry field, which can be difficult with pediatric patients or when saliva contamination occurs. A hydrophilic sealant such as UltraSeal XT hydro is designed to bond to slightly moist enamel, so you spend less time fighting isolation and more time sealing. That doesn’t mean you skip isolation—it means you can tolerate a moist surface without sacrificing retention.
Step-by-step UltraSeal XT hydro application
The following sequence covers the key stages from preparation to curing. Each step includes a common mistake to avoid and a checkpoint to confirm you’re ready to move on.
Application steps
- Isolate the tooth: Use a rubber dam, isolite, or cotton rolls to control moisture. Aim for a clean, dry field but remember that UltraSeal XT hydro tolerates some moisture. Checkpoint: Saliva is controlled, and the tooth is free of debris.
- Clean the fissures: Scrub the occlusal surface with a pumice or prophylaxis paste using a bristle brush, then rinse thoroughly. This removes plaque and organic material that can block sealant penetration. Mistake to avoid: Skipping this step can leave debris that prevents proper etching and bonding.
- Etch the enamel: Apply phosphoric acid etchant to the pit and fissures and let it sit for the recommended time (typically 15–20 seconds for permanent teeth). Rinse and dry, but do not over-dry; a slightly moist surface is acceptable. Checkpoint: Enamel appears frosty white after etching. If not, re-etch.
- Apply the sealant: Using a syringe tip, flow UltraSeal XT hydro directly into the fissures, starting from the deepest point and allowing it to spread. Avoid overfilling to prevent high spots. Mistake to avoid: Trapping air bubbles by injecting too quickly. Use a slow, steady pressure.
- Light-cure: Cure with a dental curing light according to the manufacturer’s instructions, typically 10–20 seconds. Ensure the light tip is close to the sealant surface. Checkpoint: Sealant is hard and does not move when gently probed.
- Evaluate and adjust: Check occlusion with articulating paper and remove any high spots using a fine diamond or finishing bur. Verify that all fissures are sealed and margins are smooth. Mistake to avoid: Leaving excess material that can interfere with the bite or chip off.
Product facts
- UltraSeal XT™ hydro™-Hydrophilic Pit and Fissure Sealant: UltraSeal XT hydro is a hydrophilic pit and fissure sealant from Ultradent. Its hydrophilic nature allows it to bond to moist enamel, making it a practical choice when complete isolation is difficult.
