Anyone who wears aligners, retainers, or night guards knows the routine: once a week, the dental appliance goes into a cleaning bath. But not all cleaning tablets are the same — and choosing the right product can make a significant difference.

The essentials at a glance

The ingredients determine whether a cleaning tablet is gentle or aggressive
Sodium percarbonate is more material-friendly than many alternatives
Conventional denture cleaners can damage plastic aligners over time

Why use cleaning tablets at all?

Daily cleaning with a toothbrush removes surface debris, but it doesn’t reach microscopic deposits in grooves and edges. Cleaning tablets provide chemical deep cleaning, dissolving bacteria, protein buildup, and discoloration — provided the formulation is right.

Which ingredients really make the difference?

The effectiveness of a cleaning tablet depends largely on its composition. The best products rely on active oxygen, which is particularly gentle on materials.

Sodium percarbonate breaks down in water into hydrogen peroxide, cleaning effectively without attacking plastic materials. It is more environmentally friendly than many alternatives and especially gentle on thermoplastic materials.
Citric acid removes limescale deposits and provides a fresh taste without damaging the material.
Potassium peroxymonosulfate is a powerful oxidizing agent that effectively eliminates bacteria and delivers a high level of hygiene.

Why many conventional products are problematic

Many cleaning tablets on the market were originally designed for dentures — not for delicate plastic aligners. This distinction is crucial. Dentures are typically made from harder acrylic materials, while aligners and retainers consist of thermoplastics, which are significantly more sensitive.

Aggressive cleaning agents can attack the surface of dental appliances and cause microcracks. These microscopic defects create ideal niches for bacteria to settle — turning a hygiene measure into the opposite of what it’s intended to achieve.

What to look for when buying cleaning tablets

When choosing cleaning tablets, it’s worth checking the ingredient list carefully:

Sodium percarbonate as the primary active ingredient
A pH-neutral or mildly alkaline formula
No aggressive abrasives
Specifically developed for aligners, not dentures

How to use: Dissolve one tablet in lukewarm water, place the aligner in the solution for 15–30 minutes, rinse thoroughly — done.

Conclusion

The right cleaning tablet makes the difference between clean, long-lasting dental appliances and materials that become porous over time. A well-designed formulation with gentle ingredients like sodium percarbonate cleans effectively without damaging sensitive plastics.

SonicSmile Sterilising Tablets were developed specifically for aligners, retainers, and night guards. The Swiss formula combines sodium percarbonate, potassium peroxymonosulfate, and citric acid for thorough yet gentle cleaning with a fresh mint flavor.

More information is available at sonicsmile.shop.