As parents, you should be very vigilant when your children are starting to shed their milk teeth and their permanent teeth are growing. The reason for this is to look for early signs of problems that may worsen when they get older.
For example, malocclusion is a very real problem that can worsen if left unchecked. Early intervention with this problem will prevent any kind of deformity that will be harder to correct when the patient gets older. For this problem, as with any other orthodontic issues, early detection is the best way of avoiding any headaches in the future.