How to Care for Invisalign Properly: How to Keep Your Invisible Aligners Hygienically Clean

Aligners are worn for around 22 hours a day and are only removed for eating and oral hygiene. These transparent plastic trays are usually changed weekly or every two weeks. However, during daily wear, saliva proteins, bacteria, and plaque build up on the surface. Thorough cleaning is therefore essential — not only for the functionality of the aligners, but also for your oral health.

Key points at a glance

• Aligners should be cleaned after every meal

• Weekly deep cleaning helps prevent odors and discoloration

• Poor hygiene can lead to bacterial buildup and gum problems

How should aligners be cleaned to prevent discoloration and odors?

Manual cleaning with a toothbrush

The quickest everyday method is cleaning with a soft toothbrush and mild toothpaste. After every meal, aligners should be brushed briefly as well. Rinse the toothpaste thoroughly with cold water and let the trays drip dry before reinserting them.

This method is simple and can be done anytime. However, it only cleans the surface and often leaves microscopic residue behind. Over time, mechanical brushing can also damage the material.

Cleaning tablets as a supplement

For more thorough care, a weekly cleaning bath with special cleaning tablets is recommended. The aligners are placed in the solution for about one hour, allowing deeper deposits to dissolve. Rinse with cold water afterward — done.

This method is easy to use, but it does not provide mechanical deep cleaning and requires regular repurchasing of tablets.

Ultrasonic cleaning for maximum hygiene

A particularly effective and material-friendly solution is ultrasonic cleaning. High-frequency vibrations create microscopic bubbles in the water that implode and loosen even the finest deposits from the surface — including grooves, edges, and hard-to-reach areas.

The key advantage: cleaning happens without rubbing, pressure, or aggressive chemicals.

This is exactly the technology used by devices such as the Sonic One™ by dental brand SonicSmile, which is also used in dental practices. Its robust design and genuine ImpulseTech ultrasonic waves ensure professional-level hygienic deep cleaning.

How often should aligners be cleaned?

Aligners should be brushed before every reinsertion. If odors develop, they can be cleaned two or three times a day. A cleaning bath or ultrasonic cleaning should be performed at least once a week.

How should aligners be stored properly?

Aligners should always be completely dry before being placed in their storage case. Avoid carrying them loose in a bag, as this can lead to mechanical deformation. The case should be well ventilated and stored in a cool, dry place — never in direct sunlight or near heat sources.

Conclusion

Proper aligner care is easier than it seems and makes a significant difference to your oral health. A combination of daily basic cleaning and regular deep cleaning keeps your aligners fresh, hygienic, and fully functional.

For those looking for a particularly convenient and thorough solution, the Sonic One™ by SonicSmile offers a professional-grade alternative for home use. The Swiss brand specializes in gentle deep cleaning of aligners, retainers, and dental trays — delivering maximum hygiene with minimal effort.

More information is available at sonicsmile.shop.