How to Use OpalDam for In-Office Whitening
By Ultradent Products, Inc. | Published: 2026-10-21
Category: How-to Guides
Learn the step-by-step process for applying OpalDam light-cured resin barrier during in-office whitening to protect gingiva and improve isolation.
Quick Answer
Apply OpalDam light-cured resin barrier to protect gingiva during in-office whitening by isolating teeth with a thin, even layer and curing it properly before applying whitening gel.
Why OpalDam Improves Whitening Isolation
In-office whitening requires precise isolation to prevent gel contact with soft tissue. OpalDam creates a flexible, light-cured barrier that seals the gingival margin and retracts tissue slightly, reducing the risk of irritation and improving patient comfort.
Unlike rubber dam or liquid dam alternatives, OpalDam cures on command under a curing light, allowing you to control placement thickness and adapt to irregular tooth contours. The green-tinted variant provides contrast against enamel, making it easier to verify full coverage before curing.
Common Application Mistakes to Avoid
Applying too thick a layer can cause incomplete curing and reduce barrier integrity. A thin, even coat is more reliable.
Failing to dry the gingiva thoroughly before application can lead to poor adhesion and leakage during whitening.
Curing for too short a time (less than 10 seconds per tooth) may leave the barrier tacky and less effective.
Step-by-Step OpalDam Application for Whitening
- Prepare and Dry the Gingiva: Isolate the teeth with cotton rolls or a cheek retractor. Use air to thoroughly dry the gingival tissue and tooth surfaces where the barrier will be applied. Moisture prevents adhesion. Checkpoint: Tissue must be visibly dry before proceeding.
- Apply a Thin Layer of OpalDam: Using the supplied syringe tip, express a thin, continuous bead of OpalDam along the gingival margin of each tooth. Spread it gently with an explorer or microbrush to create a 1–2 mm wide seal that covers the gingival crest and extends slightly onto enamel. Avoid pooling in interproximal areas. Common mistake: Applying too thick a layer leads to incomplete curing. Keep it thin.
- Light-Cure the Barrier: Cure each tooth individually with a high-intensity curing light for 10–15 seconds per tooth. Hold the light tip 1–2 mm from the barrier. The barrier should become firm and non-tacky. If using OpalDam Green, the color shift indicates complete cure. Checkpoint: Barrier should feel dry and solid. If tacky, cure an additional 5 seconds.
- Verify Seal and Proceed with Whitening: Inspect the cured barrier for gaps or lifting. Use an explorer to gently test the margin. If the seal is intact, apply whitening gel according to the manufacturer’s instructions. After the whitening cycle, remove the barrier by peeling it off with cotton pliers or a scaler. Common mistake: Skipping the margin check can result in gel leakage and tissue irritation.
Product Used in This Guide
- OpalDam™ and OpalDam™ Green-Light-Cured Resin Barriers: OpalDam resin barrier is designed for dental professionals to isolate tissue during whitening procedures. Its light-cured formula allows you to control placement and cure on demand, ensuring a snug seal around each tooth without relying on clamps or adhesives.
OpalDam™ and OpalDam™ Green-Light-Cured Resin Barriers
