Invisalign First, made specifically for children ages 7-10, is designed to treat simple to complex teeth straightening issues in growing children including crowding, spacing, and narrow dental arches. There are fewer food restrictions with Invisalign than traditional braces which means fewer appointments to fix broken brackets and wires…because we know the littles still love their favorite sticky sweets! Plus, the removable trays are ideal for easy hygiene, making it easier for growing children to brush and floss.