Healthy facial growth is not just about straight teeth. It also involves balanced jaw development, good oral posture, easy nasal breathing, and enough room for the teeth and tongue.
The short answer
Healthy facial growth usually includes lips together at rest, nasal breathing, proper tongue posture, balanced jaws, and enough room for teeth to erupt without major crowding.
Why it happens
Good function helps support good structure during growth.
Why it matters
Balanced growth can support better breathing, sleep, and long-term function.
What most people miss
Healthy growth cannot be judged by straight teeth alone.
What to do next
Watch facial development along with sleep and breathing habits over time.