Introduction
The ULTRADENT Opalescence 20% Teeth Whitening Refill Kit provides carbamide peroxide gel for use with customized take-home whitening trays. This gel is formulated with 20% water to help prevent dehydration and features a viscous consistency to ensure the gel and tray remain securely in place during treatment. This manual provides instructions for proper use, maintenance, and safety.
Product Overview

Image: ULTRADENT Opalescence 20% Teeth Whitening Refill Kit, showing multiple syringes of whitening gel and a clear dental tray.
This kit includes 12 syringes of 1.2 ml unflavored 20% carbamide peroxide whitening gel. The gel is vegan, gluten-free, and kosher, and contains xylitol. It is designed for efficient tooth whitening and is compatible with custom dental trays, Invisalign trays, aligners, and retainers (trays not included).
Setup and Preparation
Before beginning the whitening process, ensure you have custom-fitted dental trays provided by your dentist. These trays are essential for proper gel application and retention.
- Obtain Custom Trays: Your dentist can create custom trays by taking a scan or impression of your teeth. Alternatively, existing retainers from previous orthodontic work may be used if they fit properly.
- Brush Teeth: Thoroughly brush your teeth before each whitening session to ensure a clean surface for the gel to adhere to.
- Prepare Syringe: Remove the cap from the Opalescence gel syringe by twisting it off. Keep the cap for resealing the syringe after use.
Video: Official instructions on how to use Opalescence whitening gel with custom trays, demonstrating gel application and tray placement.
Operating Instructions
Follow these steps for effective teeth whitening:
- Apply Gel to Tray: Express a continuous bead of whitening gel into the custom tray, approximately 1/3 to 1/2 of the syringe per tray. Apply the gel along the facial side of the tray from molar to molar, or place a rice-sized amount on the front of each tooth impression, about halfway up the tooth. Avoid applying gel to crowns or other dental restorations as they will not whiten.
- Place Tray: Carefully insert the gel-filled tray into your mouth and lightly tap it to adapt it to the sides of your teeth, ensuring it is fully seated.
- Wear Time: Wear the tray for 2-4 hours per day. The specific duration may vary based on individual sensitivity and desired results.
- Remove Excess Gel: If any gel squishes out onto your gums, gently remove it with a soft toothbrush or a tissue.
- Remove Tray: After the recommended wear time, remove the tray from your mouth.

Image: Step-by-step visual guide for applying Opalescence gel to a tray, inserting the tray, and cleaning up excess gel.
Maintenance
- Clean Teeth: After removing the tray, rinse your mouth and brush your teeth to remove any remaining gel. Do not swallow the rinsed gel.
- Clean Tray: Clean the custom dental tray with a soft toothbrush and warm water. Store the tray in a clean, dry case provided by your dentist.
- Store Syringes: Recap the used syringe and store it at room temperature. Ensure the seal is intact.
Troubleshooting and Sensitivity Management
You may experience some tooth sensitivity or temporary white spots on your gums during the whitening process. This is generally normal and temporary.
- Reduce Gel Amount: If you experience sensitivity, try using a slightly smaller amount of gel in the tray during subsequent applications.
- Adjust Wear Time: Consider reducing the wear time per session or taking days off between treatments to allow your teeth to recover.
- Use Sensitivity Toothpaste: Brushing with a sensitivity-relief toothpaste (e.g., Opalescence Sensitivity Toothpaste with 5% potassium nitrate) before and after whitening can help reduce sensitivity.
- Consider Lower Concentration: If sensitivity persists, consult your dentist about switching to a lower concentration of carbamide peroxide gel (e.g., 10% or 15%) for a longer wear period.

Image: Guide illustrating various Opalescence gel concentrations (10%, 15%, 20%, 35% Carbamide Peroxide) and their recommended treatment times for different sensitivity levels.
Specifications
- Product Dimensions: 6 x 3.5 x 1 inches
- Item Weight: 5.7 ounces
- Model Number: 5402
- Manufacturer: Ultradent
- Active Ingredients: Carbamide Peroxide
- Item Form: Gel
- Included Components: Carbamide Peroxide (12 syringes, 1.2 ml each)
- Age Range Description: Adult
- Flavor: Unflavored
- Material Features: Vegan, Gluten Free, Kosher, Animal Free
Safety Information
For best results, use for 2-4 hours a day. Avoid prolonged use to prevent sensitivity. Do not ingest the gel. Keep out of reach of children. If swallowed, seek immediate medical attention. Store at room temperature. Do not use if the syringe seal is broken or missing. Consult your dental professional if you have any concerns or experience adverse reactions.
Warranty and Support
Information regarding product warranty and customer support is not available in the provided product details. Please refer to the product packaging or contact ULTRADENT directly for warranty claims or support inquiries.





