Chapter 8: What Is Interceptive Orthodontics?

Interceptive orthodontics — sometimes called "early treatment" or "Phase One" treatment — is active, hands-on treatment given while a child still has a mix of baby and permanent teeth, typically between ages seven and eleven. Unlike preventive care, this stage does involve appliances designed to guide the growth of the jaws or correct a specific problem while the child's bones are still growing and more responsive to change.

The central idea, as introduced in Chapter 1, is that some problems are far easier to correct while the jaw is still growing than after growth is complete. A narrow upper jaw, for example, can often be widened gently and predictably in a growing child with a palatal expander — a similar correction in an adult sometimes requires surgery.

Not Every Child Needs This Stage

It's worth repeating clearly: interceptive treatment is not a routine default for every child in this age range. It is recommended when there is a specific, growth-related reason to act now rather than wait — a genuinely narrow jaw causing a crossbite, a significant and worsening overbite, or crowding severe enough that permanent teeth are visibly running out of room. If your orthodontist recommends interceptive treatment, it's entirely reasonable to ask exactly which of these specific problems is being addressed.