Invisalign Invisible Aligners are a series of clear, plastic, removable aligning trays that are worn over your teeth. They work to gradually move your teeth over time into the desired position that your dentist has outlined for you. These trays are custom made, so they fit your teeth and mouth perfectly, and they work to meet your specific goals. They are changed every week to fit the new configuration, and while treatment time varies, it typically takes 9-15 months to achieve optimal results. The aligner trays are worn for 22 hours a day, removed only for eating, brushing, and flossing. Since the aligners are virtually invisible, few people will know you are receiving treatment, unless you tell them. Invisalign is a great alternative to traditional metal braces which require brackets and wires, and are not always aesthetically preferred.