Issues like large skeletal discrepancies, missing permanent teeth, severe crowding, ectopic eruptions, impacted teeth, and crossbites can be addressed in early orthodontic treatment. If treatment is not recommended yet, at least the orthodontist and the parents are aware of any issues that will need to be addressed in the future and an appropriate treatment plan can be made.
Problems like skeletal jaw discrepancies must be taken care of using growth modification. This type of treatment is best done while the patient is young and still has a fair amount of growth left. Other problems like missing permanent teeth and crossbites can lead to more serious complicated problems if not addressed early.