Jaw growth modification” refers to orthodontic  treatments that guide or alter the natural growth of the jawbones (upper jaw = maxilla, lower jaw = mandible) — usually during childhood or adolescence, when the bones are still growing.

  What It Means

Jaw growth modification aims to *correct discrepancies between the upper and lower jaws* — such as an underbite, overbite, or open bite — by encouraging or restraining growth of one jaw.

  When It’s Done

* *Before or during puberty* (typically ages 8–14)
* Works best when *growth plates are still active*
* Once growth is complete, *surgery* may be needed instead (orthognathic surgery)

 Biological Principle

These appliances apply gentle, continuous forces that:

• Influence bone remodeling at the sutures or condyles
• Redirect jaw growth patterns
• Modify muscle function and posture

Treatment Duration

• Typically *6–18 months* for the active phase
•  Followed by *retention phase* to stabilize the results

  After Growth Stops

If jaw discrepancies remain after growth is complete:

Orthodontic camouflage (teeth movement only) may be attempted for minor issues
Orthognathic surgery is required for significant skeletal