Invisalign refers to a new and rising concept in orthodontics in which a series of clear removable trays are used to align teeth into a correct occlusion. Biggest advantage is that it is clear and thus esthetic. It has no fixed appliances bonded to each tooth, so patient is more comfortable.
It is removable, so patient can use usual hygiene technique to clean their teeth, so cavity and gum disease are less likely to occur.
Invisalign is constructed in U.S. using its own unique technology.
There is expensive lab free involved, and therefore the treatment cost tends to be higher than conventional braces.
And to get good treatment result, patient cooperation is key-patient needs to wear it at all times, except the times of eating and brushing. This means 20+hours of wearing each day.