Overbite and upper flaring treated with Invisalign treatment after one year. Dr. Cheng, is a certified Platinum Invisalign® provider and is an expert at this course of treatment. Through a series of trays, customized to fit your teeth and your treatment plan, your teeth will begin to shift and move into place. Some patients use as few as 10 trays throughout their treatment and some use as many as 40, but each case is unique.