To work properly, should be properly aligned to allow for pressure to be distributed equally. The pointed ends of the top teeth should fit between two bottom teeth. The backs of your top front teeth should gently rest in front of the lower front teeth when your bite is closedInvisalign is one of the easiest ways to straighten teeth without braces. It uses a series of clear plastic aligners to slowly reposition your teeth. Your dentist will start by taking molds of your teeth. Then, she or he will have aligners specially crafted to fit your mouth and your care plan.