Attachments are the small bumps that you may see on the teeth of someone wearing Invisalign. They are round, small and made of tooth-colored resin so that they are barely noticeable. Not everyone needs them as part of their treatment. However, if Dr. Charolia recommends them you should seriously consider it because they make it far easier for your teeth to move during the treatment process. They make it easier for the aligners to grip and, therefore, apply more pressure so that your teeth can move more effectively. Since they are removable, they will come off at the end of your treatment plan. Buttons may also be used in combination with or in lieu of attachments. They work differently because while they are bonded to the teeth, an elastic is often secured to them.