My child doesn’t seem to be able to close her mouth all the way. Is that a problem?
It could be. When a person can’t comfortably keep their lips together when the mouth is closed and at rest, the condition is called “lip incompetence.” This can affect facial muscles, which could alter facial development. There may be problems with swallowing, jaw joint function, and the way teeth come in. See an AAO orthodontist for an evaluation.