Clear aligners are a series of invisible, removable, and comfortable acrylic trays that straighten your teeth like braces. Not only are the aligners invisible, they are removable, so you can eat and drink what you want while in treatment; plus, brushing and flossing are less of a hassle. The aligners are comfortable and contain no metal to cause mouth abrasions during treatment.
As with all types of braces, there are a few cons. The braces themselves need to be washed as often as your teeth, and if you skip a few cleanings, they can get dirty, making them easier to see.
They’re also better suited for particular issues. Depending on your specific needs — If you need to rotate certain teeth into place, for instance — clear aligners won’t work.