The Invisalign Palatal Expander (IPE) is designed to expand the dentition in increments of:

  # The Invisalign Palatal Expander (IPE) is designed to expand the dentition in increments of:

a) 0.1mm

b) 0.25mm

c) 0.5mm

d) 1mm

The correct answer is B. 0.25 mm.

The Invisalign Palatal Expander (IPE) uses a series of custom-designed, 3D-printed expansion trays to gradually widen the upper arch. It expands the dentition in controlled increments of 0.25mm per adjustment, ensuring a more comfortable and predictable expansion compared to traditional rapid palatal expanders (RPEs).