Invisalign® is a way to straighten teeth without braces, using a custom-made series of clear aligners. These aligners are made of smooth, comfortable and virtually invisible plastic that are simply worn over the teeth. The aligners gradually and gently shift teeth into place, based on the exact movements that Drs. Chan and Chen have planned. Invisalign® allows you to straighten your teeth invisibly; and you may still eat and drink what you are accustomed to. You may also brush and floss normally to maintain healthy gums and teeth; and there are no wires, metal or brackets. These aligners should be worn at least 22 hours a day for best results.