Invisalign is a custom made set of clear, almost invisible braces that can solve most orthodontic problems like crooked teeth, gaps between teeth and crossbites. This treatment is perfect for adults that want to change their smile without affecting their lifestyle. It is removable, invisible and comfortable. It is a comparatively slower process. To achieve a straight smile, the average treatment time is 14 months. The primary difference between Invisalign aligners and traditional, metal orthodontic appliances is that Invisalign trays are made from clear plastic and fit flush over the teeth. To the naked eye, they are all but invisible. Its aligners help maintain the appearance of your smile while helping to reposition your teeth.