I bought it for removing plaque from my Essix retainer. It does a great job!! The positive thing is that you don't need to scrub them with a toothbrush and damage the surface of the dental work over time, which results in easier plaque and bacteria accumulation. Basically, by using toothpaste and brushing, we do the same thing, it's just that over time the surface wears off (loses its smoothness and polish), so it easily collects bacteria, etc. I personally have a soft toothbrush only for cleaning after removing the retainer and removing anything that didn't come off from rinsing. The result is excellent. **If you use a clear retainer like Invisalign, etc., make sure the water is just warm, not too hot, as the retainer is made of thermoplastic material and may get damaged.