Attachments and IPR are common dental practices that help your treatment progress. In some cases, doctors perform movements on smaller teeth, which are often too small to allow for enough grip. Here, attachments can help the aligner
generate enough force to enact the movements. These small pieces of enamel-colored composite are affixed to the teeth, then gripped by the aligners. IPR, short for interproximal reduction, is performed when a doctor wants to create a bit of space between teeth to enable movements by gently flattening contact surfaces.