How Temperature and Handling Methods Affect Whitening Gels (2024)

Avoiding Chemical Breakdown

The simple fact is that all peroxide-based gels are unstable. That is a GOOD thing! The instability allows the chemicals to break down quickly in the mouth. This releases the bleaching factor byproducts that results in teeth whitening.

The challenge with such instability, however, is that all whitening gels will begin degenerating immediately upon manufacture unless they are kept under constant refrigeration. If left at room temperature or exposed to warmer climates and hot shipping temperatures, the peroxide gel will lose potency.

Standard Practices

Most whitening gel manufacturers will store their gels in warehouses, which are usually not air-conditioned, let alone refrigerated. Then, they are shipped in unrefrigerated, warm or hot (temperatures can reach up to 165°) freight trucks to be stored again in other warehouses. Lastly, they are shipped out to dental offices in warm or hot delivery trucks/vans. So, it’s easy to understand why whitening gels lose a lot of potency between the factory and the application by the patient or dentist.

There are some whitening product companies which refrigerate their highest strength power whitening gels during the final shipping stage to dental practices. However, the gels are usually not refrigerated at any storage/delivery point prior to that. To compensate, the manufacturers add chemical stabilizers, such as phosphoric acid, to reduce chemical breakdown, but those also reduce the instability (and thus effectiveness) of the gels. Those same chemical stabilizers also increase the osmolality of the whitening gel by as much as eleven times, greatly increasing sensitivity felt by patients during whitening.

It’s important to understand that there are only two ways to stabilize whitening gels after they are manufactured:

1.Chemical Stabilizers – This includes phosphoric acid and an anhydrous base, which are only partially effective and can hamper how quickly the whitening gels ultimately break down in the mouth, as well as increasing sensitivity.

2.Refrigeration – Constant refrigeration is required throughout every step of manufacturing, shipping, storage, and delivery. This prevents the natural chemical breakdowns over long periods of time and eliminates the need to add chemical stabilizers.Eliminating the need for chemical stabilizers also results in the maximum effectiveness of whitening gels when placed on the teeth, as well as greatly lowering sensitivity felt by patients.

How Temperature and Handling Methods Affect Whitening Gels (2024)

FAQs

Why does whitening gel need to be refrigerated? ›

Those hydrogen ions are acid (pH = potential of Hydrogen). Whitening gels therefore become more and more acidic as they break down, resulting in an ever increasing possibility of sensitivity and pain. Constant refrigeration virtually stops breakdown of whitening gels.

Does heat speed up teeth whitening? ›

In-Office Teeth Whitening

The bleaching solution is usually much stronger than that in at-home kits. Also, your dentist can use heat, light, or a combination of the two to speed and intensify the whitening process.

How can I make my whitening gel work better? ›

The whitening gel is the most effective with clean teeth. Try the trays in first without any beach to check the fit and comfort. Make sure that the bleaching trays are clean and dry before applying the whitening gel. Moisture reduces the efficiency of the whitening gel and slows down the whitening process.

How do whitening gels work? ›

Oxygen molecules released from the whitening agents react with the discoloured molecules in your teeth, breaking the bonds that hold them together, transforming them into a colourless material. The oxygen molecules spread, whitening the entire tooth. As a result, you are left with a brighter, whiter smile.

What happens if you don't refrigerate whitening gel? ›

The challenge with such instability, however, is that all whitening gels will begin degenerating immediately upon manufacture unless they are kept under constant refrigeration. If left at room temperature or exposed to warmer climates and hot shipping temperatures, the peroxide gel will lose potency.

Do you have to keep teeth whitening in the fridge? ›

Don't Store Whitening Strips in Hot Temperatures

Heat can inactivate the peroxide in whitening strips,so leaving them in a hot car while you run errands is a bad idea. On the flip side, if you don't plan to use your whitening products right away, storing them in the refrigerator can help to extend their shelf life.

How long does whitening gel last in the fridge? ›

Refrigeration can prolong the gel's effectiveness for up to two years, compared to about one year if stored at room temperature. However, it's crucial not to freeze the gel, as this can alter its properties.

What happens to teeth when heated? ›

With increase in temperature, the teeth progressively became fragile and difficult to handle. At the temperature of 600°C, teeth from all the three groups were disintegrated completely as soon as they were put in 10% formal formic acid for decalcification.

What does heat do to teeth? ›

Extreme temperature changes cause teeth to expand and contract. Over time, microscopic cracks may develop, allowing hot or cold sensations to seep through to the nerves beneath the tooth enamel.

Does Vicks VapoRub whiten teeth? ›

Vicks VapoRub is toxic to consume and should not be used for teeth whitening.

How to get super white teeth? ›

For your benefit, we've provided you with seven different ways to naturally whiten your teeth.
  1. Eat Strawberries. ...
  2. Eat Plenty of Fruits and Vegetables. ...
  3. Brush After You Eat or Drink. ...
  4. Rinse with Apple Cider Vinegar. ...
  5. Apply Coconut Oil. ...
  6. Brush Your Tongue. ...
  7. Use Baking Soda and Hydrogen Peroxide.

Why do my teeth look more yellow after whitening gel? ›

Also, if you have poor oral health or an underlying medical condition that affects the teeth, the teeth whitening procedure may make the teeth yellow. This is because the dentin has a yellowish hue under the enamel. So, when the enamel thins, your teeth become translucent and may look yellow.

What strength whitening gel? ›

The gel used by dentists can have 35% – 45% peroxide in it. More the peroxide, the faster the whitening. So within an hour-long session, you could have up to three – eight shades brighter teeth. At-home whitening gels have 3% – 20% peroxide.

How fast does teeth whitening gel work? ›

With whitening several times a week, you should begin to see a difference after one week and reach your optimum whiteness after two to three weeks, depending on your level of staining.

Does whitening gel actually work? ›

While most whitening products do use a chemical-based gel, there is no actual bleach in the product, so most companies call it “teeth whitening gel” to eliminate this confusion. Gel-based teeth bleaching gel is a safe and effective way to whiten your teeth and can provide dramatic results when used properly.

Should boutique whitening gel be kept in the fridge? ›

When not in use, please keep your kit in the fridge, or in a cool, dark cupboard. Keep the syringes in the box, as exposing them to light will activate the gel. Do not expose the syringes to heat and light except when placing the gel in the trays. 1 Ensure you have a full dental examination prior to whitening.

Can teeth whitening gel go bad? ›

These products are typically marked down when they're close toexpiring. Using expired whitening products means you won't get the results youwant. When they expire, the hydrogen peroxide in them breaks down and leavesonly water and oxygen, which won't brighten your teeth.

What happens if you leave teeth whitening gel on too long? ›

Burns and Blisters. In rare cases, the bleaching agents used in teeth whitening can cause burns or blisters on your gums. This usually happens when the gel used is left on your teeth for too long or if it's not applied correctly.

How long do you let teeth whitening gel sit? ›

Place a small amount of teeth whitening gel into the tray(s). Place the whitening tray(s) in your mouth carefully, making sure that it is seated all the way. Remove any excess gel from the gum tissue with your finger or dry toothbrush. Keep the tray in your mouth for 30-60 minutes.

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