This document discusses interceptive orthodontics, which refers to early orthodontic treatment to prevent potential malocclusions from developing or progressing. It defines interceptive orthodontics and compares it to preventive orthodontics. The document outlines several indications for early orthodontic intervention such as various types of crossbites, open bites, ectopic eruptions, arch length discrepancies, and dental malalignments. It also discusses potential benefits and disadvantages of early treatment, as well as specific conditions like crossbites that can be treated interceptively.