Invisalign Keeps On Innovating RETURN TO INDEX Posted Mar 5, 02:47 PM InvisalignInvisalign is using a new material called SmartTrack. Invisalign claims the new formulation makes the aligners more comfortable and easier to put on and take off, so brushing and flossing are easy.Invisalign also now offers its retainer brand called Vivera. The new retainers are clear and nearly invisible. Even better Vivera retainers should last longer as they are 30% stronger than other retainers and should be twice as durable.Ask Dr. Bibb about Invisalign. Author Design Dental Group Categories design-dental